Findings from the Third School Nutrition Dietary Assessment Study (SNDA-III)
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Transcript of Findings from the Third School Nutrition Dietary Assessment Study (SNDA-III)
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Findings from the Third School Nutrition Dietary Assessment Study (SNDA-III)
Jay HirschmanPatricia McKinneyUSDA Food and Nutrition ServiceOffice of Research, Nutrition and Analysis
Contractor: Mathematica Policy Research (MPR)Project Director: Anne Gordon
2007 USDA/State Agency ConferenceNovember 28, 2007
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SNDA-III Part of a Long Tradition National Evaluation of the School
Nutrition Programs (NESNP-I) in 1980 was the first national study by FNS to assess the effects of school meals
SNDA-I (SY 1991-92) highlighted high fat content of school meals and helped motivate SMI.
SNDA-II (SY 1998-99) provided an early look at SMI implementation
Since SNDA-II, growing concern about child obesity and changes in standards for healthy diet (DRIs and revised Dietary Guidelines)
SNDA-III (SY 2004-05) provides updated data to assess SMI and directions for the future
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Remember This??
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Remember This??
SY1991-92
NSLP Offered
38% total fat
15% saturated fat
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SNDA-III Study Design
Nationally representative of all public schools participating in the NSLP in the 48 contiguous States and DC
Data on meals offered and meals served as well as student’s 24-hour dietary intake
129 SFAs in 36 States 398 Schools Approximately 2300 Students in 287 of those
schools Data collected in Spring 2005
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Thank You States and School Food Authorities
Alabama Maryland OklahomaArizona Massachusetts OregonCalifornia Michigan PennsylvaniaColorado Minnesota South CarolinaConnecticut Mississippi TennesseeFlorida Missouri TexasGeorgia Nebraska UtahIllinois New Jersey VermontIowa New Mexico VirginiaKansas New York WashingtonKentucky North Carolina WisconsinLouisiana Ohio Wyoming
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We’ll be presenting….Offered and Served
Average Meals as Offered -- Unweighted analyses-- Equal weight to items within menu choice
Average Meals as Served (Selected by students)-- Weighted analysis-- More weight to frequently selected items
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NSLP/SBP: Current Requirements for Reimbursable Meals
Nutrients Nutrients in meals are averaged over a school week; weekly
averages must meet regulatory standards– 1/3 of 1989 RDA for protein, calcium, iron, vitamin A and
vitamin C at lunch; 1/4 of RDA for these nutrients at breakfast
– Appropriate level of calories for age/grade groups– Consistent with the 1995 DGA
Limit the percent of calories from total fat to 30% of the actual number of calories offered
Limit the percent of calories from saturated fat to less than 10% of the actual number of calories offered
Reduce sodium and cholesterol levels Increase the level of dietary fiber
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To make this presentation more interesting, we now bring you…
Pat “The Optimist” McKinney as
The Good Cop
Jay “The Pessimist” Hirschman as
The Bad Cop
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Are School Lunches Meeting SMI Nutrition Standards?
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Most Schools Serve Lunches that Meet Standards for Key Nutrients that
Contribute to a Healthy Diet1 0 0 % 1 0 0 %
8 8 %
7 3 %
8 8 %
7 3 %
9 9 %9 2 %
8 6 % 8 3 %
0
2 0
4 0
6 0
8 0
1 0 0
P r o t e i n V i t a m i n A V i t a m i n C C a l c i u m I r o n
L u n c h e s O f f e r e d L u n c h e s S e r v e d
Percentage of Schools Meeting Standards
Source: School Nutrition Dietary Assessment-III, Menu Survey, SY 2004-2005.
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OK, Pat, that showed results for each nutrient individually
But…what about schools meeting ALL of the SMI nutrient standards
together?
Please write down your best guess For percent as offered on average
Protein + Vitamin A + Vitamin C +Calcium + Iron +
Total Fat + Saturated Fat +Calories
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SOURCE: SNDA-III, Menu Survey, school year 2004-05.
5.7 6.5 4.7 4.210.77.3 2.0 0.9
0
20
40
60
80
100
All schools Elementary schools Middle schools High schools
Perc
ent o
f Sch
ools
Offered Served
Few Schools Met All SMI Standards for a Reimbursable Lunch
Percentage of Schools Meeting Standard
Only 5.7% meet all SMI standards, even withthe waiver to used offered (unweighted) data
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SOURCE: SNDA-III, Menu Survey, school year 2004-05.
71%
49%
79%
60% 58%
39%
53%
23%
0
20
40
60
80
100
Perc
enta
ge o
f Sch
ools
All schools Elementary schools Middle schools High schools
Offered Served
Seventy-nine Percent of Elementary SchoolsOffered Lunches that Met the Calorie Standard
Percentage Meeting the Standard
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SOURCE: SNDA-III, Menu Survey, school year 2004-05.
Over Three-Fourths of High Schools Are Not Serving Lunches that Meet the Calorie
Standards for Reimbursement
29%21%
42%47%
40%
51%61%
77%
0
20
40
60
80
100
All schools Elementary schools Middle schools High schools
Perc
enta
ge o
f Sch
ools
Offered Served
Percentage NOT Meeting Standard(tall bars =worse)
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9386 90 96
0
20
40
60
80
100
Low Fat Low Saturated Fat
ElementarySecondary
Percentage of Schools Offering Students Opportunity to Select
Source: School Nutrition Dietary Assessment-III, Menu Survey, SY 2004-2005.
Low Fat and Low Saturated Fat LunchOptions Were Widely Available
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Less than One-Third of Schools Met Standards for Reimbursable Meals for Total Fat or Saturated Fat
19%28%
21%30%
0
20
40
60
80
100
Total Fat Saturated Fat
Lunches Offered Lunches Served
Percentage of Schools Meeting Standards
Source: School Nutrition Dietary Assessment-III, Menu Survey, SY 2004-2005.
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Almost All Schools Satisfied the Benchmark for Cholesterol and Fiber
96% 99%92%
82%
1%
0
20
40
60
80
100
Cholesterol Fiber
Lunches Offered Lunches Served
Percentage of Schools Meeting Standards
Source: School Nutrition Dietary Assessment-III, Menu Survey, SY 2004-2005.Note: Benchmarks are not requirements under SMI.
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Almost All Schools Failed to Satisfy the Benchmarks for Sodium
100%
8%4%
99%
18%
1%0
20
40
60
80
100
Cholesterol Fiber Sodium
Lunches Offered Lunches Served
Percentage of Schools NOT Meeting the Benchmarks(tall bars = worse)
Source: School Nutrition Dietary Assessment-III, Menu Survey, SY 2004-2005.Note: Benchmarks are not requirements under SMI.
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Have Schools Made Progress Toward Meeting SMI Standards
Since 1998-99?
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A High Proportion of Elementary Schools Continue to Meet SMI Standards for Key Nutrients
Served at Lunch
100% 100% 98%91% 86%
75%
100% 98%93% 96%
0
20
40
60
80
100
Protein Vitamin A Vitamin C Calcium Iron
SY 1998-99 SY 2004-05
Sources: School Nutrition Dietary Assessment-III, Menu Survey, and School Nutrition Dietary Assessment-II, Menu Survey, SY 1998-99 (Fox et al. 2001).
Percentage of Elementary Schools Meeting Standards
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There was No Improvement in the Proportion of Secondary Schools Meeting SMI Standards for Most
Key Nutrients Served at LunchSignificantly Fewer Met the Vitamin A Standard in SNDA-III
100% 100%
65%*
40%
79%71%
86% 82%
0
20
40
60
80
100
Protein Vitamin A Vitamin C Calcium Iron
SY 1998-99 SY 2004-05
Sources: School Nutrition Dietary Assessment-III, Menu Survey, SY 2004-05 and School Nutrition Dietary Assessment-II, Menu Survey, SY 1998-99 (Fox et al. 2001).
*Difference is statistically significant at .05 level.
Percentage of Secondary Schools Meeting Standards
60%65%
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SOURCES: SNDA-III, Menu Survey, SY 2004-05 and SNDA-II, Menu Survey, SY 1998-99.*Difference is statistically significant at 0.05 level.
Average Calories from Saturated Fat Declined between SY 1998-99 and SY 2004-05 in Lunches
as Served
<10% 11.9% 10.8%* <10%12.1% 11.1%
0
10
20
30
Perc
ent o
f Cal
orie
s
fr
om S
atur
ated
Fat
.
Elementary Schools Secondary Schools
Standard SY 1998-99 SY 2004-05
*
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SOURCES: SNDA-III, Menu Survey, SY 2004-05 and SNDA-II, Menu Survey, SY 1998-99.*Difference is statistically significant at 0.05 level.
AND More Schools Met Saturated Fat Standard in Lunches Served in SY 2004-05
15%
34%*
13%
24%*
0
20
40
60
80
100
Perc
ent o
f Sch
ools
Mee
ting
Stan
dard
.
Elementary Schools Secondary Schools
SY 1998-99 SY 2004-05
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SOURCES: SNDA-III, Menu Survey, SY 2004-05 and SNDA-II, Menu Survey, SY 1998-99.*Difference is statistically significant at 0.05 level.
But More than Two-thirds of Schools Still Do Not Meet the Meal Reimbursement Standards
for Saturated Fat
87%85%76%
66%
0
20
40
60
80
100
Elementary Schools Secondary Schools
Perc
ent N
OT
Mee
ting
Stan
dard
s
SY 1998-99 SY 2004-05
Percentage of Schools NOT Meeting Standard
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SOURCES: SNDA-III, Menu Survey, SY 2004-05 and SNDA-II, Menu Survey, SY 1998-99.
Between SY 1998-99 and SY 2004-05, Average Calories from Total Fat in Lunches as
Served Were Unchanged
<30% 33.1% 32.9%<30%
34.5% 35.5%
0
10
20
30
40
50
Perc
ent o
f Cal
orie
s fr
om
Tota
l Fat
Elementary Schools Secondary Schools
Standard SY 1998-99 SY 2004-05
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SOURCES: SNDA-III, Menu Survey, SY 2004-05 and SNDA-II, Menu Survey, SY 1998-99.
There Was No Significant Difference in the Proportion of Schools Meeting the Total Fat Standard in Lunches
Served Between SY1998-99 and SY2004-05
21% 26%14% 12%
0
20
40
60
80
100
Perc
ent o
f Sch
ools
Mee
ting
Stan
dard
.
Elementary Schools Secondary Schools
SY 1998-99 SY 2004-05
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SummaryIn SY 2004-05 . . .
Most schools offered and served lunches meeting SMI standards for vitamins, minerals and protein
Significantly more schools served lunches meeting standard for saturated fat than in SY 1998-99
Less than one-third of schools offered or served lunches consistent with SMI standards for fat or saturated fat
Sodium levels in lunches served remained high
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Top Sources of Total Fat and Saturated Fat in NSLP Lunches
Total fat Salad dressings Condiments/spreads Pizza products Peanut butter
sandwiches French fries
Saturated fat Pizza products Condiments/spreads 2% milk Salad plates/salad bars Hamburgers and
cheeseburgers
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SNDA-III has much more informationThree volumes and a separate Consumer-friendly Summary
Volume I: School Foodservice Operations, School Environment and Meals Offered and Served
menu planning system used, characteristics of school environment (school policies on
lunch time, open campus) availability of competitive foods (vending, a la carte,
other)Volume II: Student Participation and Dietary Intakes Reasons for participation, satisfaction with school meals,
characteristics of participants-nonparticipants Dietary intake at lunch and breakfast and over 24 hours Types of foods consumed, food sources of
calories/nutrients Frequency and sources of competitive foods AppendicesVolume III: Sampling and Data Collection
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Office of Research, Nutrition and Analysis
(ORNA)
The SNDA-III Summary of Findings and Full Report (3 volumes) are now available
on the FNS we site