An Analysis of the Effect of Insurance on American Children · According to Dr. Kenneth Bock, the...
Transcript of An Analysis of the Effect of Insurance on American Children · According to Dr. Kenneth Bock, the...
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Econ 495 - Fall 2009
Panel Study of Income
Dynamics
Professor Frank P. Stafford
Lisa Luo
December 2009
An Analysis of the Effect of Insurance on
American Children
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Introduction
The issues of uninsured families in America have been an ongoing debate between
Congress, private insurance companies, and the general public in need of healthcare. Due to the
lack of access to clinical care for a growing population of immigrants, unemployed parents, and low-
income families, over 47 million individuals in America were without health insurance during the
entire year of 2008, and that number continues to increase1. Of the 47 million individuals, nearly
20% of the uninsured are children. Using the PSID data from the Child Development Supplement II
and Child Development Supplement III, this paper compares the shifts in lifestyle behaviors of the
uninsured and insured children from 2002 to 2008. The primary goals of this paper are to evaluate
the importance of health insurance coverage for specific age cohorts and to recommend policies
that address the disadvantages of the uninsured children. Public policy surrounding insurance
coverage should focus on the health of the children, since the children will be the future parents,
future workers, and future leaders of the next generations to come.
Insurance Coverage Shifts
The rising medical costs over the last decades are the main cause of uninsurance in America.
Along with increasing copayments and out-of-pocket expenses, health insurance premiums have
outpaced the rate of inflation and wages since the 1980’s2. The majority of health care packages are
employer-related, while some employers do not offer any health insurance. Employers that cannot
afford the high medical expenditures have reduced their health care benefits, leaving their workers
with the option of purchasing expensive private insurance packages.
As a result, the increasing medical costs have affected low-income and unemployed families
the most. Below is a table of the national unemployment rates from 2001 to 2008 from the Bureau
of Labor Statistics3:
Table 1. National Unemployment Rate by Year
Year Unemployment Rate
Year Unemployment Rate
2001 4.7% 2005 5.1%
1 "Facts about Healthcare." National Coalition on Healthcare. 2009. NCHC, Web.
<http://www.nchc.org/facts/coverage.shtml>. 2 "Out of Pocket Spending on Health Care Services." Cover the Uninsured. 2009. Robert Wood Johnson Foundation,
Web. 9 Nov 2009. <http://covertheuninsured.org/content/out-pocket-spending-health-care-services>. 3 "Employment status of the civilian noninstitutional population, 1940 to date." Bureau of Labor Statistics. 2009.
Bureau of Labor Statistics, Web. 9 Nov 2009. <http://www.bls.gov/cps/cpsaat1.pdf>.
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2002 5.8% 2006 4.6%
2003 6.0% 2007 4.6%
2004 5.5% 2008 5.8%
Table 1 shows the unemployment rate from 2001 to 2008. Although the unemployment
rate decreases from 2004 to 2007, it does not signify that more caregivers purchased health
insurance in those years. The fact that unemployment increased from 2001 to 2003 and 2007 to
2008 shows that the employment rate is volatile and some caregivers may be too risk averse to
purchase insurance if they do not think they will be employed in the next year.
Table 2 uses the variables ER23277 (family unit member with health insurance in the last
two years - 2003), ER40409 (family unit member with health insurance in the last two years - 2007),
and Q32J50 (child health insurance status in 2007) to illustrate the insurance coverage shifts from
2001 to 2007. Constructing Table 2 required the following assumptions:
If a family unit member is covered with health insurance, then it is assumed that the
child is also covered.
ER23277 is used to indicate the insurance status for years 2001 and 2002, while
ER40409 is used to indicate the insurance status for years 2005 and 2006.
The sample decreased slightly when comparing 2005 children to 2007 children,
resulting in slight differences in the proportion of insured and uninsured in 2005 in
the two panels below. To rectify the discrepancies, taking the averages of the two
values was necessary to achieve an approximation. For example, the average
proportion of children not insured in 2005 or 2006 is 4.64% ((4.82+4.46)/2).
Table 2. Insurance Status of children from 2001 to 2007
At first glance, it may seem that more children are becoming insured - 3.32% of the children
who didn’t have health insurance in 2005 became insured in 2007 while only 2.37% who didn’t have
insurance in 2001 received health insurance in 2005. However, the totals for no insurance in all the
years are increasing.
Health Insurance in 2005 or 2006
Health Insurance in 2007
No Yes Total No Yes Total
No 1.06 2.37 3.43 No 1.14 3.32 4.46
Yes 3.76 92.81 96.57 Yes 4.28 91.26 95.54
Total 4.82 95.18 100 Total 5.42 94.58 100
Health
Insurance
in 2001 or
2002
Health
Insurance
in 2005 or
2006
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In 2001 and 2002, 3.43% of children were uninsured, while approximately 4.64% were uninsured in
2005 and 2006. In 2007, the fraction of uninsured children increases to 5.42%. In 2007, more
children lost health insurance than in 2005 (compare values 4.28% and 3.76%). This is an indication
that there is greater transition to non-coverage between the years 2005 and 2007. Also, the
percentage that has insurance in both years (Yes, Yes) decreases from 2005 to 2007 (compare
values 91.26% and 92.81%). The overall result is that more and more children became uninsured
from years 2001 to 2007.
Along with shifts in insurance coverage, the differing economic climates from 2002 to 2007
contribute to the changes in the type of insurance covering American families.
Figure 1a. Type of Insurance of All Children, Age 6-11.9 in 2002
1b. Type of Insurance of All Children, Age 12-18 in 2002
4.68%
64.90%3.25%
0.48%
19.02%
1.82%4.68% 1.19%
Type of Insurance of All ChildrenAge 6-11.9 in 2002
Uninsured
Employer
Private Directly Purchased
Medicare
Medicaid
Military
State-sponsored
Other Gov
5.74%
69.18%
4.53%0.30% 13.60%
1.51% 3.32% 1.81%
Type of Insurance of All Children Age 12-18 in 2002
Uninsured
Employer
Private Directly Purchased
Medicare
Medicaid
Military
State-sponsored
Other Gov
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1c. Type of Insured Child’s Insurance, Age 12-18 in 2007
Figure 1a shows that larger proportion of younger children enrolled in government
assistance programs such as Medicaid and state-sponsored insurance than older children in 2002
(compare to Figure 1b). A larger percentage of older children are covered by employer-based
healthcare in 2002 than in 2007.In Figure 1c, a smaller portion of the insurance purchased in 2007 is
employer-related (64.1%). In 2007, slightly more children are covered by directly purchased private
insurance, and a larger percentage of the children are covered by government programs such as
Medicaid, and SCHIP (total 27.6%) relative to 2002. This indicates that at least 27.6% of the insured
children come from poorer families, since Medicaid and SCHIP is distributed only to low-income
families who cannot afford to purchase health care coverage.
A pooled regression of government assistance programs on age and illnesses gives a clearer
picture of the type of children who were enrolled in the government programs in 2002 and 2007. In
Table 3, the coefficient of 0.033442 indicates a 3% shift to government programs in 2007. This is
consistent with Figure 1c, and may be due to the fact that SCHIP and Medicaid coverage became
more readily available to more families under the poverty line in 2007. With the negative
coefficients of -.00991 and -.0116, older children and children with allergies were less likely to be
covered by a government assistance program in 2002 or 2007. The positive coefficient of .105815
for obesity indicates that those insured by government programs were more likely to be obese. This
emphasizes the direct cost of obesity to the government, and the indirect cost to taxpayers.
33.70%
23.90%6.50%
4.60%
19.80%
7.80%
1.00%
2.70%Type of Insured Child's Insurance
Age 12-18 in 2007PCG Employer
OCG Employer
Ex-Spouse Employer
Private Directly Purchased
Medicaid
SCHIP
Medicare
Other/Military
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Table 3. Pooled Regression of Government Programs on Age and Illness Conditions
R Square 0.007968
Standard Error 0.423515
Observations 2946
ANOVA
df SS MS F Significance F
Regression 5 4.235551 0.84711 4.722833 0.000267
Residual 2940 527.3327 0.179365
Total 2945 531.5682
Coefficients Standard Error t Stat P-value
Intercept 0.350493 0.036166 9.691316 6.95E-22
Asthma 0.022301 0.02189 1.018756 0.308402
Allergy -0.00991 0.018298 -0.54138 0.588285
Obese 0.105815 0.031796 3.327893 0.000886
Age -0.0116 0.003577 -3.24308 0.001196
2007 0.033442 0.023881 1.400376 0.161506
Figure 1c illustrates that approximately 1/3 of the insurance is healthcare provided by the primary
caregiver’s employer (usually the mother), while only 24% is provided by the other care giver
(usually the father). Table 4 shows that a larger proportion of men were unemployed in 2007 and
2008. Most primary caregivers are mothers and more females are employed in 2007 than men,
resulting in a larger portion of health insurance to be provided by the mothers’ employers.
Table 4. Unemployment Rate by Sex4
Year Men Women
2006 4.6% 4.6%
2007 4.7% 4.5%
2008 6.1% 5.4%
Perhaps government health insurance programs should target their marketing to female
caregivers, since it has been proven that females play a more significant role in their children’s
health, where mothers’ income has 20 times more impact on their children’s survival than fathers’
4 "Employment status of the civilian noninstitutional population 16 years and over by sex, 1973 to date." Bureau of
Labor Statistics. 2009. Bureau of Labor Statistics, Web. 9 Nov 2009. <http://www.bls.gov/cps/cpsaat2.pdf>.
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income. This is due to the fact that females spend around 51% of their income on household
improvements, food, and healthcare5.
Problems of Uninsurance
The central problem of lack of health care is the rising need for medical attention among children.
In the last four decades, the prevalence of children with chronic health conditions such as asthma,
obesity, ADHD, autism, and allergies has dramatically increased6. Poor dietary habits and lack of
physical exercise contributes to the 16% to 33% of adolescents who are considered obese7. The
exact causes of allergies and asthma are unknown, but some theorize that it is a result of climate
change, air pollutants, or sedentary lifestyles; children are exposed to more indoor allergens such as
dust and pet dander8. According to Dr. Kenneth Bock, the author of Healing the New Childhood
Epidemics: Autism, ADHD, Asthma and Allergies: The Groundbreaking Program for the 4-A
Disorders, allergies and asthma are underestimated because they are such common illnesses9.
However, they can become life-threatening conditions very quickly and should be regarded as
serious risks to a child’s well-being. Furthermore, obesity has been associated with other chronic
illnesses such as Type 2 diabetes, heart disease, cancer, and kidney failure. According to a report
published by The New England Journal of Medicine, if obesity is left untreated, the current
generation of children may be the first in American history to live shorter life spans than their
parents10. The causes of children epidemics are a combination of behavioral and biological factors,
and while obesity can be diminished by a change of behavioral habits, the key point to acknowledge
from the stark statistics is that children need access to medical physicians in order for the chronic
conditions to be diagnosed and treated. Preventative measures such as immunization, medication,
and doctor checkups are vital to the development of a child’s health.
5 "The BoP Community Has to do Much More for Women." NextBillion. 2009. NextBillion, Web. 9 Nov 2009.
<http://www.nextbillion.net/blog/2009/10/29/the-bop-community-has-to-do-much-more-for-women>. 6 Perrin, James. "The Increase of Childhood Chronic Conditions in the United States." TheJournal of the American
Medical Association. 27 07 2007. JAMA, Web. 12 Dec 2009. <http://jama.ama-assn.org/cgi/content/extract/297/24/2755>. 7 "Obesity In Children And Teens." Facts for Families. 05 2008. American Academy of Child & Adolescent
Psychiatry, Web. 12 Dec 2009. <http://www.aacap.org/cs/root/facts_for_families/obesity_in_children_and_teens>. 8 "The Increasing Incidence of Asthma in Children." Increasing Incidence. Children's Asthma, Web. 10 Dec 2009.
<http://www.childrens-asthma.info/articles/increased-asthma-children/index.php>. 9 Bock, Kenneth. Healing the New Childhood Epidemics: Autism, ADHD, Asthma, and Allergies: The Groundbreaking
Program for the 4-A Disorders. Ballantine Books, 2007. 153. Print. 10
Belluck, Pam. "Children's Life Expectancy Being Cut Short by Obesity." New York Times. 17 03 2005. New York Times, Web. 13 Dec 2009. <http://www.nytimes.com/2005/03/17/health/17obese.html?_r=1>.
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Figure 2 illustrates the phenomena of increasing chronic conditions of asthma, obesity and
allergies among American children across a span of five years (from 2002 to 2007). By comparing
Figure 2b and 2c, the proportion of insured and uninsured children diagnosed with the illnesses in
2007 is strictly greater than the proportion of diagnosed children in 2002. The most dramatic result
is the 14.63% increase of insured children diagnosed with obesity in 2007 compared to 2002. A
possible explanation of the relatively low proportion of uninsured children with obesity in 2007
(1.61%) may be the issue of undiagnosed conditions amongst children not covered by insurance.
This supports the notion that many uninsured children are left untreated or undiagnosed with
chronic illnesses such as obesity.
Figure 2a. Percentage of Children with Illness Ages 6-11.9 in 2002
2b. Percentage of Children with Illness Ages 12-18 in 2002
12.12%
24.24%
0.00%
16.86%
26.18%
0.00%
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
Asthma Allergy Obesity
Percentage of Children with Illness 2002 Age 6-11.9
Insured
Uninsured
2.56%
15.38%
0.00%
16.42%
27.34%
0.42%
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
Asthma Allergy Obesity
Percentage of Children with Illness 2002 Age 12-18
Insured
Uninsured
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19.35%30.65%
1.61%
16.90%
30.93%
15.05%
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
Asthma Allergy Obesity
Percentage of Children with Illness2007 Age 12-18
Insured
Uninsured
2c. Percentage of Children with Illness Ages 12-18 in 2007
In order to see the effect of insurance coverage and age on the likelihood of being diagnosed for
asthma, allergies, and obesity in 2007, a regression analysis with the illnesses as the dependent
variables is necessary.
Table 5a. Asthma
Multiple R 0.031112
R Square 0.000968
Adjusted R Square -0.00078
Standard Error 0.376212
Observations 1145
ANOVA
df SS MS F Significance F
Regression 2 0.15661 0.078305 0.553252 0.575231
Residual 1142 161.6338 0.141536
Total 1144 161.7904
Coefficients Standard Error t Stat P-value
Intercept 0.26292 0.088898 2.957558 0.003165
Age 2007 -0.00464 0.005017 -0.92537 0.354969
Insured -0.02689 0.049191 -0.54667 0.584709
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Table 5c. Obesity
Multiple R 0.086994
R Square 0.007568
Adjusted R Square 0.00583
Standard Error 0.349439
Observations 1145
ANOVA
df SS MS F Significance F
Regression 2 1.063378 0.531689 4.354275 0.013066
Residual 1142 139.4467 0.122107
Total 1144 140.51
Coefficients Standard Error t Stat P-value
Intercept 0.029386 0.082571 0.355892 0.721987
Age 2007 -0.00089 0.00466 -0.19039 0.849034
Insured 0.133936 0.045691 2.931358 0.003442
The large p-values in Table 5a and 5b for the “insured” independent variable indicate that
insurance coverage does not have an observed impact on the likelihood of asthma and allergies
among children. This subtle result shows that all children are at risk for asthma and allergies,
further supporting the view that uninsured children are at a disadvantage due to their lack of health
Table 5b. Allergy
Multiple R 0.027175
R Square 0.000738
Adjusted R Square -0.00101
Standard Error 0.462587
Observations 1145
ANOVA
df SS MS F Significance F
Regression 2 0.180598 0.090299 0.421983 0.655848
Residual 1142 244.3731 0.213987
Total 1144 244.5537
Coefficients Standard Error t Stat P-value
Intercept 0.221884 0.109308 2.029896 0.042599
Age 2007 0.005659 0.006169 0.917443 0.359104
Insured 0.005701 0.060485 0.094248 0.924929
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care. However, the p-value of .003442 for the insured variable in Table 5c shows that there is a
statistically significant positive relationship between obesity and insured children. Age does not
have an observed influence on asthma, allergy, and obesity. A closer look at the lifestyle habits of
the insured and uninsured children in the last section of the paper will reveal whether this is a
result of lack of physical exercise or poor dietary habits.
Utilization of Healthcare Services
The main outcome of uninsurance is that uninsured children are less likely to receive medical
attention for illnesses such as asthma, sore throats, and earaches11. If left untreated, these
conditions may result in severe and fatal consequences. The next section will compare the
utilization of medical services of uninsured and insured children.
Figure 3a. Average Number of Doctor Visits in 2002 by Age 6-11.9
11
http://covertheuninsured.org/content/childrens-health-care-coverage
1.57 1.101.91 2.48
1.532.46
10.99
3.43
0.00
2.00
4.00
6.00
8.00
10.00
12.00
Excellent Very Good Good Fair
Ave
rage
# o
f D
oc
Vis
its
in 2
00
2
PCG Rating 2002
Average # of Doctor Visits in 2002 by PCG Rating and Age 6-11.9
Uninsured
Insured
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3b. Average Number of Doctor Visits in 2002 by Age 12-18
3c. Average Number of Doctor Visits in 2006 by Age 12-18
Figure 3 shows that the average number of doctor visits for insured is always higher than
the average number of doctor visits for the uninsured (the only exception is the “excellent
category” in Figure 3a). In Figure 3c, an insured parent who rates his child’s health as “fair” is more
likely to bring their children to the doctor more frequently than an insured parent who views his
child’s health as “excellent”. In 2002, on average, younger children received more health care. The
0.00
2.00
4.00
6.00
8.00
10.00
Excellent Very Good
Good Fair Poor
1.06 1.452.30
0.00 0.00
4.77 4.96
2.56
4.88
9.00
Ave
rage
# o
f D
oc
Vis
its
in 2
00
2
PCG Rating 2002
Average Number of Doctor Visits in 2002 by Age 12-18
Uninsured
Insured
0.39
1.68
0.91
2
1.19
2.07
2.56
5.05
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Excellent Very Good Good Fair
Ave
rage
# D
oct
or
Vis
its
in 2
00
6
PCG Rating 2007
Average Number of Doctor Visits in 2006 by Age 12-18
Uninsured
Insured
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zero values in Figure 3b for “fair” and “poor” is due to the fact that there were no data values for
those categories.
There does not appear to be a relationship between the primary care giver’s rating and
average number of doctor visits for the uninsured in 2002 and 2006. This may be due to the fact
that primary care giver’s rating doesn’t play a large factor in the utilization of healthcare services.
However, uninsured children rated with “excellent” health by their primary caregivers only visited
the doctors 0.39 times during 2006, which is the lowest value amongst the other rating categories.
This is consistent with adverse selection, since parents who believe that their child has excellent
health will be less likely to bring their child to the doctor or pay for medical coverage.
A comparison of scatter plots of the number of doctor visits with family income as the
independent variable reveals that income has a larger effect on uninsured children than insured
children in 2002.
Figure 4a. Number of Doctor Visits of Uninsured Children in 2002
y = 2E-05x + 0.728R² = 0.058
0
2
4
6
8
10
12
14
-50000 0 50000 100000 150000 200000
# o
f D
oct
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its
for
an il
lne
ss
Family Income 2002
Number of Doctor Visits of Uninsured Children 2002
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Figure 4b. Number of Doctor Visits of Insured Children in 2002
The upward sloping trend line in Figure 4a implies that for uninsured families, the higher
the family income, the more times a child visits the doctor for an illness such as a common cold, flu,
or asthma. With only one child who visited a maximum of 12 visits per year (one visit per month),
some children didn’t see the doctor at all: 53% of the uninsured children did not visit their doctor
over a period of a year. Could it be that the children never caught a cold in a given year? It is highly
unlikely. This makes sense since the household doesn’t receive any financial relief in healthcare bills
and must pay for everything out of their own pockets. Along with increasing premiums and co-
payments for insured individuals, medical services for uninsured patients are becoming more costly.
On the other hand, with one child who visited the doctor a maximum of 62 visits per year, on
average, the insured children receive more care from medical professionals. Only 38% did not visit
the doctor at all in the last 12 months of the assessment. As shown by the flat trend line, there is
no direct relationship between family income in 2002 and the number of doctor visits per child,
indicating that children see their doctors if there is a need. This seems logical since they are already
insured, and the only fee they have to pay for doctor visits is a co-payment. Although co-payments
are increasing and is dependent on the amount of health insurance coverage, Figure 5b shows that
family income doesn’t affect the frequency of doctor visits for insured children.
Figure 4a and 4b show that family income does make a difference among the insured and
uninsured children in 2002. Without health insurance, doctor visits are extremely costly and are
rationed throughout the year for severe cases. However, around 98% of the insured children visited
the doctor under or equal to 12 times a year. Thus, for the large part, insured children don’t go to
the doctors more frequently just because they are insured. Doctor visits, especially for children,
aren’t fun. However, when in need, insured children have more access to doctors, and some may go
as often as 5 times a month, without as much financial burden as uninsured children. Furthermore,
y = -5E-07x + 1.928R² = 0.000
-18
2
22
42
62
0 50000 100000 150000 200000
# o
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oct
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its
for
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Family Income 2002
Number of Doctor Visits of Insured Children 2002
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it turns out that only 3 out of the 112 uninsured families received outside help from relatives to
help them relieve the financial burden of high medical bills in 2002. This indicates that uninsured
families either limit the number of doctor visits or go to public clinics rather than asking for
financial help from others.
Pooling the data from 2002 and 2006 achieves a more holistic analysis of the relationship
between the number of doctor visits, income, and age in Table 6. The 2006 constant dollars were
calculated by multiplying 2002 income by the ratio of 2006 to 2002 Consumer Price Index. This
pooled regression shows that on average, insured children visit the doctors 3.09 more times than
uninsured in 2002 and 2006. Age has a slight positive effect on doctor visits, so older children visit
the doctors .089 more times annually than younger children. Consistent with Figure 4b, the pooled
regression illustrates that there is not much of an effect of income on number of doctor visits in
2002 and 2006 combined. A possible cause is that more insured families were from lower income
brackets, due to the increased proportion of insured families covered by government assistant
programs like Medicaid and SCHIP (as shown in 1c). This results in a slightly more equal income
distribution among insured families, and a decreased effect of income on doctor visits.
Table 6. Pooled Regression of Doctor Visits on Income, Insurance Coverage, and Age
Multiple R 0.020426
R Square 0.000417
Adjusted R Square -0.00099
Standard Error 43.28748
Observations 2132
ANOVA
df SS MS F Significance F
Regression 3 1664.422 554.8072 0.296086 0.828255
Residual 2128 3987460 1873.806
Total 2131 3989124
Coefficients Standard Error t Stat P-value
Intercept 0.257566 5.88051 0.0438 0.965068
Age 0.08904 0.285392 0.311991 0.755078
Insured 3.094109 4.675571 0.661761 0.508196
Income (Constant $2006) -8.3E-06 1.18E-05 -0.70623 0.480122
An potential explanation of the difference of the number of visits among insured and
uninsured children may be the fact that insured families allocate a higher percentage of their family
spending on their child’s medical care. Figure 5 compares the percentage of total family medical
16
expenditure spent on children in 2002 and 2006.
𝑃𝑒𝑟𝑐𝑒𝑛𝑡𝑎𝑔𝑒 𝑜𝑓 𝑚𝑒𝑑𝑖𝑐𝑎𝑙 𝑐𝑜𝑠𝑡𝑠 𝑠𝑝𝑒𝑛𝑡 𝑜𝑛 𝑐𝑖𝑙𝑑 =𝐴𝑛𝑛𝑢𝑎𝑙 𝐶𝑜𝑠𝑡 𝑜𝑛 𝐶𝑖𝑙𝑑 ′ 𝑠 𝐷𝑒𝑛𝑡𝑎𝑙 𝑎𝑛𝑑 𝑀𝑒𝑑𝑖𝑐𝑎𝑙 𝐶𝑎𝑟𝑒
𝑇𝑜𝑡𝑎𝑙 𝐴𝑛𝑛𝑢𝑎𝑙 𝐹𝑎𝑚𝑖𝑙𝑦 𝑀𝑒𝑑𝑖𝑐𝑎𝑙 𝐶𝑜𝑠𝑡
It’s important to note that this value is a rough approximation. For insured individuals, the annual
cost includes insurance premiums and out-of-pocket expenses such as copayments, prescriptions,
and deductibles. For uninsured individuals, the annual cost includes out-of-pocket expenses only,
which includes fee-per-service payments and prescriptions.
Figure 5a. Percentage of Medical Expenditure Spent on Uninsured Children
5b. Percentage of Medical Expenditure Spent on Uninsured Children 2006
y = -0.000x + 28.84R² = 0.190
-10
0
10
20
30
40
50
60
0 50000 100000 150000
% o
f m
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ical
co
sts
on
un
insu
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ild
Total Family Income 2002
% of Medical Costs on Uninsured Child 2002
Series1
Linear (Series1)
y = 1E-06x + 0.07R² = 0.039
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
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0 50000 100000 150000 200000
% M
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on
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hild
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Total Family Income 2006
% Med Costs Spent on Uninsured Child 2006
% Med Costs Spent on Uninsured Child
Linear (% Med Costs Spent on Uninsured Child)
17
Figure 5a and 5b compares the percentage of medical costs spent on uninsured children
in 2002 and 2006. The negative trendline in 2002 reveals that as family incomes increases, the
percentage of medical expenditure spent on the child decreases. A reason is perhaps the families
allocate their spending on other important goods and services such as food and education. On the
other hand, the slight positive coefficient of 1E-06 for income implies that as income increases, the
percentage of medical expenditure spent on children increases in the household in 2006. This may
be due to the increasing health costs over the years or the increase percentage of uninsured
children diagnosed with asthma, obesity, and allergies. (see Figure 2c).
Figure 5c. Percentage of Medical Expenditure Spent on Insured Children in 2002
5d. Percentage of Medical Expenditure Spent on Insured Child in 2006
y = 2E-05x + 11.79R² = 0.004
0
20
40
60
80
100
0 200000 400000 600000 800000
% o
f m
ed
ical
co
sts
spe
nt
on
insu
red
ch
ild
Total Family Income 2002
% of Medical Costs Spent on Insured Child 2002
Series1
y = 3E-07x + 0.147R² = 0.018
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
80.00%
90.00%
100.00%
0 500000 1000000 1500000
% M
ed
Co
sts
spe
nt
on
Insu
red
Ch
ild 2
00
6
Total Family Income 2006
% Med Costs Spent on Insured Child 2006
% Med Costs Spent on Insured Child
Linear (% Med Costs Spent on Insured Child)
18
Figure 5c and 5d compares the percent of medical costs spent on insured children in 2002
and 2006. The higher R-squared in 2006 (0.018) implies that there is a stronger correlation between
percent of medical costs spent on children and the total family income in that year. There is an
upward slope even with high income outliers. Since the data gathered from 2006 is from CDS-III, the
graph for 2006 contains 92.81% of the sample from 2002 of insured children (refer to Table 1).
Thus, a possible reason for the stronger relationship in 2006 may be due to the fact that older
childre visit the doctor more frequently (refer to Table 6). Also, the increase in medical service costs
over the years also attributes to a higher percentage. While some insured families spend the
entirety of their medical costs on their children, the highest percentage that was spent on an
uninsured child was 50% in 2002 and 78% in 2006. In Figure 5b, the majority of uninsured familes
spent less than 40% of their medical costs on their child.
Table 7. Pooled Regression of Total Child Medical Expenditure on Age, Income, and Insurance Status
Multiple R 0.369638
R Square 0.136632
Adjusted R Square 0.134445
Standard Error 1377.604
Observations 1584
ANOVA
df SS MS F Significance F
Regression 4 474228044.6 1.19E+08 62.47102 4.60906E-49
Residual 1579 2996613644 1897792
Total 1583 3470841689
Coefficients Standard Error t Stat P-value
Intercept -308.681 223.248797 -1.38268 0.16696
Age 12.72926 15.93420304 0.798864 0.42449
Insured 373.0053 156.5671747 2.382398 0.017318
Income (Constant $2006) 0.006141 0.000462812 13.26929 3.56E-38
2006 432.4203 104.2493101 4.147944 3.53E-05
Pooling the data from 2002 and 2006, Table 7 tests for the correlation between the total amount of
medical expenditure spent on children and independent variables such as age, income, and
insurance status. Note that the income is in constant 2006 dollars. The results show that there is a
relationship between the amount of family spending on the child’s healthcare and insurance status
(p-value of 0.017). This may be due to the fact that those insured are from higher income brackets
and are likely to spend more on their children’s health. Also, as the family’s income rises, more is
spent on the child. The increase in copayments and premiums as the years increase is reflected in
19
the coefficient for 2006 (432.42), which indicates that families spent more of their income on their
child’s healthcare in 2006 than in 2002. This is consistent with rising medical costs over the last
decade. Age doesn’t have a significant relationship with medical expenditure. In general, uninsured
families spend a smaller proportion of their medical spending on their children than insured
families. Consequently, because the parents are the individuals making the decision to bring their
child to the doctor, uninsured children are less likely to receive health care even when it may be
necessary.
Lifestyle and Food Patterns The following section focuses on the comparison of behavorial patterns between uninsured and
insured families in regards to dietary habits, food sufficiency, and physical exercise by addressing
the following question: Do insured children exhibit moral hazard behavior through poorer diet and
less physical exercise?
A child’s body mass index is an objective tool to measure the child’s obesity level. The pooled
regression in Table 8 shows that variables such as age, days of exercise, and insurance status has an
effect on a child’s body mass index. The coefficient for “age” (.7911) shows that older children have
higher BMI scores, and the pvalue of 8.80804E-13 is the main predictor that there is a strong
positive relationship between body mass index and age. On average, insured children are more
likely to have a higher BMI score. This is consistent with Table 3 and Table 5c, which showed that
those covered by health care were more likely to be obese. The coefficient for “2006” shows that as
the years have increased from 2002 to 2006, children’s BMI increased. This is due to the fact that
2006 children are from CDS-III and there are more older children (ages 12-18) than in CDS-II, where
the ages range from 6 to 18. Income has a slight negative coefficient, implying that as income
increases, the body mass index decreases.
Table 8. Pooled Regression of BMI on Income, Age, Insurance, and Exercise
Multiple R 0.377671
R Square 0.142636
Adjusted R Square 0.139051
Standard Error 5.670581
Observations 1202
ANOVA
df SS MS F Significance F
Regression 5 6398.07 1279.614 39.79457397 6.50966E-38
Residual 1196 38457.97 32.15549
20
Total 1201 44856.04
Coefficients Standard Error t Stat P-value
Intercept 12.19404 1.395994 8.735023 8.07397E-18
Age 0.791181 0.109483 7.226516 8.80804E-13
Days of Exercise -0.12035 0.0711 -1.69267 0.09077896
Insured 0.140846 0.789098 0.17849 0.858368479
Income (Constant $2006) -1.9E-06 1.87E-06 -1.03719 0.299859125
2006 0.303293 0.607046 0.499622 0.617433238
The negative correlation between income and body mass index in 2002 in Figure 6a and
6b is consistent with the negative coefficient for income in Table 8. Thus, the higher the
household’s income, the lower the body mass index. The difference between the Figures 6a and 6b
is the slope of the trendline. The steeper slope in Figure 6a indicates that uninsured child’s body
mass index is more dependent on income. Thus a small change in income would result in a higher
change in uninsured child’s body mass index compared to a insured child’s body mass index. An
explaination may be that families with higher incomes are able to purchase more nutritious fresh
food or have extra income for their children to join sport programs and teams.
Figure 6a. Uninsured Child’s BMI 2002
y = -4E-05x + 25.82R² = 0.014
0
10
20
30
40
50
60
0 50000 100000 150000
Ch
ild's
BM
I 20
02
Family Income 2002
Uninsured Child's BMI 2002
Series1
Linear (Series1)
21
Figure 6b. Insured Child’s BMI 2002
To test the consistency of the result that insured children have higher body mass indexes
on average (see Table 8) , Figure 7 shows that there are similar patterns of exercise behaviors in
2002 and 2007. For example, in both years, a larger percentage of insured children exercised in all
categories of days except for the category of “3 to 5 days/week”. Although a larger share of insured
children exercise six to seven days a week than uninsured children, more insured children also do
not exercise at all in both 2002 and 2007 (zero days a week). The result is ambigious, and it’s
difficult to say whether insured or uninsured children exercise more.
Figure 7a. Share of Children who Exercise X Number of Days per Week in 2002
y = -3E-06x + 21.43R² = 0.000
0
10
20
30
40
50
60
70
0 200000 400000 600000 800000 1000000
Insu
red
Ch
ild's
BM
I
Family Income 2002
Insured Child's BMI 2002
Series1
Linear (Series1)
40.00%
7.27%
41.82%
10.91%
44.79%
9.16%
26.41%
19.64%
0%5%
10%15%20%25%30%35%40%45%50%
0 1 to 2 3 to 5 6 to 7
% o
f U
nin
sure
d o
r In
sure
dP
op
ula
tio
n 2
00
2
Number of Days of Exercise 2002
Share of Children Who Exercise X Number of Days Per Week 2002
Uninsured
Insured
22
Figure 7b. Share of Children who Exercise X Number of Days per Week in 2007
Table 9a and 9b shows the regression of number days of exercise on body mass index and
will give a better estimate of the effect of insurance coverage on a child’s physical activity. In 2002,
insured individuals exercise on average more than uninsured children (positive coefficient for
dummy variable for insured), and there is a slight positive correlation between body mass index and
number of days of exercise. Th p-value of .17 shows that this is not statistically significant. Similarly,
the p-value for 2007 is .24, also portraying no statistically significant correlation. In 2007, as shown
by the negative coefficient of -0.01519, those who exercise more days per week had a lower body
mass index. An important finding is that on average, insured children in 2007 exercised .3 days less
than uninsured children,
Table 9a. Regression of Days of Exercise on BMI and Insurance Coverage in 2002
Multiple R 0.045406
R Square 0.002062
Adjusted R Square 0.000886
Standard Error 2.664126
Observations 1701
ANOVA
df SS MS F Significance F
Regression 2 24.8984 12.4492 1.754009 0.173392
3.51%
10.53%
57.89%
28.07%
7.14%
18.57%
43.67%
30.61%
-10%
0%
10%
20%
30%
40%
50%
60%
0 1 to 2 3 to 5 6 to 7
Shar
e o
f U
nin
sure
d o
r In
sure
dP
op
ula
tio
n 2
00
7
Number of Days of Exercise 2007
Share of Children who Exercise X Number of Days Per Week 2007
Uninsured
Insured
23
Residual 1698 12051.67 7.09757
Total 1700 12076.57
Coefficients Standard Error t Stat P-value Lower 95%
Upper 95%
Lower 99.0%
Upper 99.0%
Intercept 2.01155 0.446865 4.501476 7.21E-06 1.135087 2.888014 0.859208 3.163893
Insured 0.096201 0.369619 0.260272 0.794686 -0.62876 0.821158 -0.85695 1.049348
BMI 2002 0.01982 0.010601 1.869664 0.061702 -0.00097 0.040612 -0.00752 0.047156
Table 9b. Regression of Days of Exercise on BMI and Insurance Coverage in 2007
Multiple R 0.053416
R Square 0.002853
Adjusted R Square 0.000839
Standard Error 2.171337
Observations 993
ANOVA
df SS MS F Significance F
Regression 2 13.35613 6.678066 1.416433 0.243069
Residual 990 4667.558 4.714705
Total 992 4680.914
Coefficients Standard Error t Stat P-value Lower 95%
Upper 95%
Lower 99.0%
Upper 99.0%
Intercept 4.809478 0.393387 12.22583 4.11E-32 4.03751 5.581445 3.794223 5.824732
BMI 2007 -0.01519 0.011383 -1.33429 0.182415 -0.03753 0.007149 -0.04457 0.014189
Insured -0.30231 0.303941 -0.99462 0.320163 -0.89875 0.294136 -1.08672 0.482106
Table 10 shows that age does affect the number of days of exercise, with older kids
exercising more frequently than younger children. The positive coefficient for income and insured
independent variables indicate that the higher income and insured children exercised more than
uninsured in 2002. This is consistent with the results from Table 9a. Although the dummy variable
for “males” has a negative coefficient, the 95% confidence interval for the coefficients have a
positive coefficient (.2766), showing that males exercise more than females. On average, females
aged 14 to 18 years old exercised a day less than males in 2002.
24
Table 10. Regression of Days of Exercise in 2002 with Age, Gender, Income, and Insurance Status
Multiple R 0.238038
R Square 0.056662
Adjusted R Square 0.053335
Standard Error 2.594657
Observations 1724
ANOVA
df SS MS F Significance F
Regression 6 694.7168 115.7861 20.6385 1.88E-23
Residual 1718 11565.99 6.732243
Total 1724 12260.71
Coefficients Standard Error t Stat P-value Lower 95%
Upper 95%
Lower 99.0%
Upper 99.0%
Intercept -0.238 0.460255 -0.51711 0.605145 -1.14072 0.664716 -1.42486 0.948853
Age 0.226084 0.023599 9.580091 3.25E-21 0.179798 0.272371 0.165229 0.28694
Income 2002 7.7E-07 6.44E-07 1.19451 0.232443 -4.9E-07 2.03E-06 -8.9E-07 2.43E-06
Insured 0.015409 0.360145 0.042786 0.965877 -0.69096 0.721779 -0.9133 0.944114
Female 14-18 -1.10956 0.215538 -5.14787 2.94E-07 -1.53231 -0.68682 -1.66537 -0.55376
Male -0.00483 0.143508 -0.03368 0.973136 -0.2863 0.276635 -0.3749 0.365229
Dietary Behaviors
To sum up the previous findings, on average, insured children have higher body mass
indexes relative to uninsured children. Insured children’s exercise habits shifted from 2002 to 2007,
and exercised less than uninsured children in 2007. In terms of body mass indexes, insurance
coverage does have a negative effect on insured children. A closer look at the dietary behaviors and
the parents’ value of nutritional food will decipher whether insurance coverage is linked to what
kids eat.
Table 11 is a t-test of the importance of vegetables, assuming unequal variances. The scores
range from 1 to 4, with 4 indicating that vegetables are very important to the child’s diet. The
means are high, conveying that both insured and uninsured families value nutritious food. With a
confidence level of 95% and the null hypothesis that there is no difference between the means of
the scores between uninsured and insured samples, the two-tail p-value (.9818) show that the
mean difference is not statistically significant. Thus, insurance status doesn’t change the
importance of vegetables in a family unit.
25
Table 11. T-test of Importance of Veggies
Uninsured Insured
Mean 3.431034 3.428705
Variance 0.565336 0.611344
Observations 58 1066
Hypothesized Mean Difference 0
df 64
t Stat 0.022926
P(T<=t) one-tail 0.49089
t Critical one-tail 1.669013
P(T<=t) two-tail 0.981781
t Critical two-tail 1.99773
Using the variables ER21706 (Enough food and kind wanted) and ER24099 (total family
income from 2002), Table 12 analyzes at the availability of food for uninsured and insured families.
An assumption made is that the “kind” of food that is wanted is nutritious food such as vegetables
and fruit, which are generally more expensive than snacks and fast food. Using child weight from
2002, the income is divided into three tiers: low, middle, high. In general, insured families have a
higher range of income than uninsured families.
A larger percentage of insured families have enough food compared to uninsured families
while a larger percentage of uninsured families don’t always have the kind of food desired or
sometimes not enough. Furthermore, income plays a factor in the availability of food, although
there is no strong correlation shown in this data. The only strong relationship between income and
availability of food is shown through the column 2 and 3 for insured families, where the percentage
of those not always having the kind of food wanted or sometimes not enough decreases as income
rises.
Table 12. Availability of Food by Income for Uninsured and Insured in 2002
Insured 2002
Income $ 1-enough food
2-enough but not always kind of
food wanted
3-sometimes
not enough
4-often not enough
Total
0-42920 24.02% 15.31% 1.41% 0.48% 41.22%
42920-83977 26.70% 5.98% 0.04% 0.00% 32.73%
83977-2051900 24.55% 1.41% 0.00% 0.09% 26.04%
Total 75.27% 22.70% 1.45% 0.57% 100%
26
Uninsured 2002
Income $ 1-enough 2-enough but not always kind of
food wanted
3-sometimes
not enough
4-often not enough
Total
0-23850 24.00% 14.67% 1.33% 0.00% 40.00%
23850-47453 20.00% 14.67% 1.33% 0.00% 36.00%
47453-153000 21.33% 2.67% 0.00% 0.00% 24.00%
Total 65.33% 32.00% 2.67% 0.00% 100.00%
Breakfast is considered to be the most important meal of the day, jumpstarting one’s
metabolism and has been shown to be negatively correlated with obesity in many cross sectional
studies. Figure 8a splits the CDS-II children into two age cohorts, ages 6 to 11.9 and ages 12 to 18.
Note that the uninsured children’s sample size is significantly smaller than insured children’s sample
size (there were only ten uninsured children in the age group 6 to 11.9 and 32 uninsured children in
age group 12 to 18, while there were 366 insured children in age group 6 to 11.9 and 867 insured
children in age group 12 to 18). Since there were a total of ten uninsured children in age group 6 to
11.9, there were no children that had nothing for breakfast. This probably would be a larger
percentage if the sample size was larger. Younger insured children ate less breakfast than older
insured children in 2002, while 28.13% of the older uninsured children didn’t eat breakfast. Figure
8b is constructed with all the children from CDS-III, since they are aged 12 to 18. Again, the sample
sizes differ based on insurance status (991 insured children, 34 uninsured children). Athough there
isn’t much of a difference between insured and uninsured children in Figure 8b, a higher proportin
of insured children do not eat breakfast, and this is consistent with the previous findings that
insured children are more likely to be obese.
27
Figure 8a. Share of Children who had Nothing for Breakfast in 2002
8b. Share of Children who had Nothing for Breakfast in 2007
With the incomes separated into quartiles, Figure 9 compares the average number of days
per week that an insured or uninsured child eats dairy, fruit, and fast food. Note that there is no
data on fast food consumption for 2002. Also, the income ranges are much higher for insured
children. Thus, we can compare the average number of days of food consumption for the same
income ranges. For insured children in 2002, there is a distinct positive relationship between
income and the average number of days a child eats fruit and dairy. This is the logical result, since
one would imagine that a family would allocate more of their family spending on fruits and dairy as
their income rises. This is due to the fact that nutritious food is more expensive than snack food or
junk food. The trends of fruit and dairy consumption follow one another in uninsured children in
2002, with an overall result of more dairy consumption than fruit intake for all children. On average,
0.00%
5.00%
10.00%
15.00%
20.00%
25.00%
30.00%
6 to 11.9 12 to 18
27.32%20.88%
0%
28.13%
% o
f C
hild
ren
wh
o h
ad N
oth
ing
for
Bre
akfa
st 2
00
2
Age in 2002
Share of Children Who had Nothing for Breakfast in 2002
Insured
Uninsured
3.37%
3.38%
3.39%
3.40%
3.41%
3.42%
3.43%
Insured Uninsured
3.43%
3.39%
% o
f C
hild
ren
wh
o h
ad N
oth
ing
for
Bre
akfa
st in
20
07
Share of Children who had Nothing for Breakfast in 2007
12 to 18
28
$0-34366 $34367-$62618 $62619-$99500$99501-
$2051900
Fruit 3.55 3.67 3.78 4.45
dairy 3.41 3.81 3.98 4.85
3
3.5
4
4.5
5
Ave
rage
# D
ays/
Wk
20
02
Average # of Days/Wk of Fruit/Dairy Consumed by Insured Kids 2002
insured children seem to be eating more dairy and fruit than uninsured children. In 2007, with an
addition of the average number of days a child eats fast food, the results are humbling – all children
in each income bracket eat more fast food than fruit and dairy products each week. This shows
what the fast food industry has done to the eating habits of children in America. On average,
uninsured children eat more fruit and dairy than insured children. For all children, the average
number of days of fruit and dairy consumption decrease as the average number of days of fast food
consumption rises as income rises. This figure shows that in 2007, insured children eat more fast
food, and less fruit and dairy tan uninsured children and adds more consistency to the result that
insured children are more obese. This is an interesting finding, since in Table 11, insured and
uninsured parents equally value the importance of vegetables. Also, as shown in Table 12, although
insured children have a higher food sufficiency score than uninsured children, insured children are
consuming more fast food. A possible reason to explain why insured children are eating more fast
food than uninsured children may be due to the insured family’s busy lifestyle, as more insured
families are employed, and have a higher income, translating to higher productivity in their
occupations. It is quite ironic that higher income results in poorer eating habits among insured
children across time.
Figure 9a. Average Number of Days per Week of Fruit/Dairy Consumed by Insured Kids 2002
29
$0-$15000$15001-$30000
$30001-$48550
$48551-$129000
Fruit 4.67 3.06 3.86 2.67
Dairy 3.92 3.12 3.93 4.33
2.5
3
3.5
4
4.5
5
Ave
rage
Day
s/w
k
Average # of Days/Wk Fruit/Dairy Consumed by Uninsured Kids 2002
9b. Average Number of Days per Week of Fruit/Dairy Consumed by Uninsured Kids 2002
9c. Average Number of Days per Week of Food Consumption by Insured Children 2007
$0-$39000$39001-$70300
$70301-$116400
$116401-$1067300
Milk 3.57 3.77 3.67 3.47
Fruit 3.92 3.88 3.62 3.49
Fast Food 4.57 4.51 4.84 5.25
33.5
44.5
55.5
Ave
rage
# o
f D
ays
/Wk
Insu
red
Ch
ildre
n 2
00
7
Average # Days/Wk of Food Consumption by Insured Children 2007
30
9d. Average Number of Days per Week of Food Consumption by Uninsured Children 2007
Table 13 consists of multiple regressions of the number of days of food consumption on age,
income and insurance status in years 2002 and 2007. The R-squares of Table 13a and 13b show that
there is a correlation between dairy and fruit intake with the independent variables. As children get
older and as their family’s income increases, they consume more fruit and dairy. The positive
coefficient for the dummy variable “insured” indicates that insured children eat more fruit and dairy
than uninsured children. The negative intercept in both Table 13a and 13b conveys the fact that the
number of average days of fruit and dairy consumption are low (approximately 3 days a week).
Table 13a. Regression of Days of Dairy Intake on Age, Income and Insurance Status 2002
Regression Statistics
Multiple R 0.721095
R Square 0.519978
Adjusted R Square 0.517718
Standard Error 1.987247
Observations 641
ANOVA
df SS MS F Significance F
Regression 3 2725.008 908.336 230.0079 4.4127E-101
Residual 637 2515.61 3.949152
Total 640 5240.618
Coefficients Standard Error t Stat P-value
Intercept -10.9928 0.705254 -15.587 1.22E-46
$0-$24000$24001-$40900
$40901-$62026
$62027-$181962
Milk 3.53 4 3.86 3.8
Fruit 3.95 4 2.57 3.1
Fast Food 4.95 4.07 4.07 5.1
2.53
3.54
4.55
5.5
Ave
rage
# o
f D
ays/
wk
Un
insu
red
Ch
ildre
n 2
00
7
Average # Days/Wk of Food Consumption by Uninsured Children
2007
31
Age 2002 1.295565 0.05026 25.77736 6.5E-101
Income 2002 1.39E-06 1.04E-06 1.335247 0.182273
Insured 0.199789 0.453701 0.440355 0.65983
Table 13b. Regression of Days of Fruit Intake on Age, Income and Insurance Status 2002
Regression Statistics
Multiple R 0.705042
R Square 0.497084
Adjusted R Square 0.494715
Standard Error 2.033736
Observations 641
ANOVA
df SS MS F Significance F
Regression 3 2604.128 868.0426 209.8708 1.2E-94
Residual 637 2634.684 4.136081
Total 640 5238.811
Coefficients Standard Error t Stat P-value
Intercept -11.1347 0.721752 -15.4273 7.4E-46
Age 2002 1.267959 0.051436 24.6514 9.91E-95
Income 2002 1.19E-06 1.06E-06 1.122412 0.26211
Insured 0.55955 0.464314 1.20511 0.228608
Table 13c. Regression of Days of Dairy Intake on Age, Income, and Insurance Status 2007
Multiple R 0.016883
R Square 0.000285
Adjusted R Square -0.00264
Standard Error 2.159229
Observations 1029
ANOVA
df SS MS F Significance F
Regression 3 1.362586 0.454195 0.097419 0.961459
Residual 1025 4778.826 4.662269
Total 1028 4780.189
Coefficients Standard Error t Stat P-value
Intercept 3.796633 0.542202 7.002251 4.55E-12
Income 2006 6.2E-08 8.56E-07 0.072352 0.942336
Age 2007 -0.00156 0.030951 -0.05026 0.959922
Insured -0.15899 0.294218 -0.54038 0.589051
In 2007, the coefficients for income, age, and insurance status vary among the regressions.
In Table 9c, there isn’t much of a significant relationship between dairy intake and age, income and
insurance status, as denoted by the R-square of 0.000285 and p-value of .9614. Insured children
and older children consume less dairy, which is conveyed by the negative coefficients for age and
insured children. The positive coefficient for income indicates that the higher the income, the more
32
dairy the child consumes. This is consistent with Table 13a and 13b. Note that the children in CDS-III
are 12 to 18 years old.
Table 13d. Regression of Days of Fruit Intake on Age, Income, and Insurance Status 2007
Regression Statistics
Multiple R 0.075228058
R Square 0.005659261
Adjusted R Square 0.002748995
Standard Error 2.140792895
Observations 1029
ANOVA
df SS MS F Significance F
Regression 3 26.73607 8.912025 1.944586 0.120701
Residual 1025 4697.569 4.582994
Total 1028 4724.305
Coefficients Standard Error t Stat P-value
Intercept 2.557042488 0.537572 4.756648 2.25E-06
Income 2006 -8.3396E-07 8.49E-07 -0.98232 0.326173
Age 2007 0.063948826 0.030687 2.083904 0.037416
Insured 0.347700352 0.291706 1.191955 0.233555
Table 13d shows that there isn’t a large correlation between fruit intake and age, income,
and insurance status, as shown by the small R-square (0.00565). A strange result is that as income
increases, children eat less fruit on average. Since nutritious food such as fruit is usually more
expensive than snack foods, one would hypothesize that as family’s income increases, the children
would eat more fruit per week. Older children and insured children eat more fruit, but insurance
status seems to have a larger effect than age, due to the larger coefficient.
Table 13e. Regression of Days of Fast Food Intake on Age, Income, and Insurance Status 2007
Regression Statistics
Multiple R 0.12126
R Square 0.014704
Adjusted R Square 0.01182
Standard Error 2.027031
Observations 1029
ANOVA
df SS MS F Significance F
Regression 3 62.85077 20.95026 5.098806 0.001661
Residual 1025 4211.577 4.108855
Total 1028 4274.428
Coefficients Standard Error t Stat P-value
Intercept 4.718787 0.509006 9.270598 1.06E-19
Income 2006 3.09E-06 8.04E-07 3.839867 0.000131
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Age 2007 -0.0209 0.029056 -0.71919 0.47219
Insured 0.06825 0.276205 0.247099 0.804881
The intercept of 4.718 in Table 9e is consistent with Figure 9c and 9d, showing that children
eat more fast food than fruit and dairy on average. Insured children and families with higher income
eat more fast food, which is surprising since one would expect that lower income families would
treat their children to more fast food meals. Younger teens also eat more fast food. To sum up
Table 9, the type of food consumption is an age-dependent process, where the older children in
CDS II from 2002 eat more fruit and dairy. The older children in CDS III, who comprise the majority
of the younger children in CDS II, eat less dairy than the relatively younger children in CDS III. Also,
fruit and fast food consumption does not differentiate too much between younger and older
children in CDS III, whereas age had a much larger effect in 2002 since there was a wider range of
ages among the children.
Conclusion
Across a span of six years, the decreasing amount of health coverage has negatively affected the
access of health services for the low-income and unemployed families of America. In times where
medical physicians need to treat and prevent new childhood chronic illnesses such as obesity,
asthma, and allergies, uninsured children receive less medical attention due to the financial burden
of increasing medical costs. Thus, it is important for Congress to invest their budget in a public
option that will provide coverage for all children. If more and more children are unable to receive
medical service, the future generations will suffer from shorter life expectancies, lower standard of
living, and more illnesses.
Insurance coverage also negatively affects the amount of physical exercise and dietary
habits among the insured children. This is a complex problem associated with our society’s
mentality regarding nutrition and fitness. With the busy American lifestyles, the insured families
substitute nutritious meals that take time to prepare for fattening fast food available through a
drive-through. As a result, insured children are more likely to be obese, conveying a monetary and
physical cost to society. Parents need to be positive role models when the children are young, for
unhealthy eating habits stick with children as they age and as they make their own dietary choices.
A recommendation is that the education system should promote healthy habits in the youth
through an increase in breakfast programs, physical education classes, and nutrition classes. A
child’s health is one of the most important factors in their development, and this is an issue that
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needs to be addressed by parents, Congress, and the education system. A unified effort is necessary
to combat the rising health problems among the children, and it begins with a change in our
lifestyle choices. While parents and the education system should encourage healthier lifestyles, the
government is morally and socially responsible for providing preventative medical care to ensure
the well-being of our future generations. Insurance matters.
Appendix of Variables Variables are taken from the CDS-II and CDS-III Primary caregiver interviews from 2002 and 2008 and PSID Family-level and Individual-level indexes. All analysis was conducted through Excel 2007. ER30001 1968 INTERVIEW NUMBER ER30002 PERSON NUMBER ER32000 SEX OF INDIVIDUAL ER15666 H52A IMPORTANCE OF FRUITS/VEGGIES ER33501 1999 INTERVIEW NUMBER ER33502 SEQUENCE NUMBER ER33503 RELATION TO HEAD ER33601 2001 INTERVIEW NUMBER ER33602 SEQUENCE NUMBER 01 ER33603 RELATION TO HEAD 01 CH02PRWT CHILD LEVEL WEIGHT 02 Q21A4B ASTHMA 02 Q21A4P ALLERGIES 02 Q21A4V OBESITY 02 Q21A5 DR VISIT - ILLNESS 02 Q21A11 PCG RATED CHILD HEALTH 02 Q21A15 # DR VISITS - ASTHMA 02 Q21A17 AMT -DENTAL INSUR 02 Q21A19 AMT -DENTAL CARE 02 Q21A21 AMT -MEDICAL INSUR 02 Q21A23 AMT -MEDICAL CARE 02 Q21IWAGE CHILD AGE AT TIME OF PCG IW - YEARS 02 Q23K13M BREAKFAST: NOTHING 02 Q23K14A # DAYS ATE: DAIRY 02 Q23K14B # DAYS ATE: FRUIT 02 Q23K17 # DAYS EXERCISE OUTSIDE SCH 02 Q24BMI BODY MASS INDEX 02 ER21706 F26 WTR ENOUGH FOOD AND KIND WANTED ER23277 H60 WTR FU MEMBER W/HLTH INS LAST 2 YRS ER23297 H82 TOTAL COST ALL MEDICAL CARE ER23338 K34A PRIMARY ETHNIC GROUP ER23430 L41 PRIMARY ETHNIC GROUP ER24099 TOTAL FAMILY INCOME LAST YEAR ER33701 2003 INTERVIEW NUMBER ER33702 SEQUENCE NUMBER 03 ER33703 RELATION TO HEAD 03
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ER36016 # IN FU ER36020 # CHILDREN IN FU ER36701 F15 # FU MEMBERS RECEIVED FOOD STAMPS ER40409 H60 WTR FU MEMBER W/HLTH INS LAST 2 YRS
ER40420 H70 TOT DR/OUTPT SURGRY/DENTAL EXPENSES
ER40432 H82 TOTAL COST ALL MEDICAL CARE ER41027 TOTAL FAMILY INCOME-2006 ER33901 2007 INTERVIEW NUMBER ER33902 SEQUENCE NUMBER 07 ER33903 RELATION TO HEAD 07 CH07PRWT PRIMARY CAREGIVER / CHILD WEIGHT 07 Q31A4B ASTHMA 07 Q31A4P ALLERGIES 07 Q31A4P2 OBESITY 07 Q31A5 DR VISIT ILLNESS 07 Q31A11 PCG RATED CHILD HEALTH 07 Q31A15 NUM DR VISITS - ASTHMA 07 Q31IWAGE CHILD AGE AT TIME OF PCG IW - YEARS 07 Q32J50 CHILD HEALTH INS 07 Q32J51A CHLD HLTH INS - PRIVATE THRU PCG EMPL 07 Q32J51B CHLD HLTH INS - PRIVATE THRU OCG EMPL 07 Q32J51C CHLD HLTH INS - PRIV THRU EX-SPS EMPL 07 Q32J51D CHLD HLTH INS - PRIV PURCHASED DIRECT 07 Q32J51E CHLD HLTH INS - MEDICAID 07 Q32J51F CHLD HLTH INS - SCHIP 07 Q32J51G CHLD HLTH INS - MEDICARE 07 Q32J53 CHILD 2 HEALTH INS 07 Q32JA33 CHILDREN HEALTH COV COSTS 07 Q32JA34 CHILDREN HEALTH OUT OF POCKET COSTS 07 Q33K13_M BREAKFAST: NOTHING 07 Q33K13C MILK PAST 7 DAYS 07 Q33K13G FRUIT PAST 7 DAYS 07 Q33K13J FAST FOOD PAST 7 DAYS 07 Q33K17 # DAYS EXERCISE OUTSIDE SCH 07 Q34BMI BODY MASS INDEX 07