Epidemiology lecture 4 death rates
-
Upload
inaamul-haq -
Category
Health & Medicine
-
view
133 -
download
3
description
Transcript of Epidemiology lecture 4 death rates
![Page 1: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/1.jpg)
EPIDEMIOLOGY
Lecture 4Death Rates
![Page 2: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/2.jpg)
Learning Objectives
1. Understand specific and proportional death
rates
2. Understand the need for standardization
3. Describe the TWO methods of
standardization
4. Calculate age-standardized death rates.
![Page 3: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/3.jpg)
![Page 4: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/4.jpg)
Crude death rate
Number of deaths during the year
Mid-year populationX 1000
![Page 5: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/5.jpg)
What is the disadvantage of a crude death rate?
Population AAge group Population No. of
deaths
0-15 300 315-60 200 1>60 500 5Total 1000 9
Age group Population No. of deaths
0-15 100 115-60 800 4>60 100 1Total 1000 6
Population B
![Page 6: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/6.jpg)
Specific Death Rates
• Cause or disease specific• Age-specific• Sex-specific• Age and sex-specific• Related to specific groups (Remember
incidence rates for smokers, ex-smokers, never-smokers????)
![Page 7: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/7.jpg)
Age-specific death rate
Total number of deaths in a specified age group in a defined area during a specified period
Mid-year population of the specified age groupX 1000
![Page 8: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/8.jpg)
![Page 9: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/9.jpg)
EXERCISE 1• Calculate age-specific death rate for the age group 20-
30 years and compare it with the crude death rate.
Age group Population Number of deaths
0-10 200 410-20 300 320-30 300 230-40 350 340-50 400 550-60 250 760-70 150 570-80 50 7Total 2000 36
6.67
18
![Page 10: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/10.jpg)
Sex-specific death rate
Total number of deaths in males (or females) in a defined area during a specified period
Mid-year population of males (or females)X 1000
![Page 11: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/11.jpg)
EXERCISE 2
• In the year 2013, the mid-year population of a town was 100,000. Calculate the specific death rate for males in the town for the year 2013, given that:– Number of male deaths in 2013=500– Sex ratio=1000 males per 1000 females.
10
![Page 12: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/12.jpg)
Disease-specific death rate
Total number of deaths due to a disease (e.g., Cancers) in a defined area during a specified
period
Mid-year populationX 1000
![Page 13: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/13.jpg)
![Page 14: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/14.jpg)
EXERCISE 3
• The mid-year population during 2013 was 50000. The number of deaths during this year was 600 out of which 50 died due to cancer. Calculate:– The crude death rate.– Specific death rate due to cancer.
121
![Page 15: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/15.jpg)
Proportional Mortality
• The number of deaths from a given cause per 100 or 1000 total deaths in the same period.
• Relative importance of specific disease or disease group, as a cause of death.
![Page 16: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/16.jpg)
![Page 17: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/17.jpg)
![Page 18: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/18.jpg)
EXERCISE 4Number of deaths for Leading Causes of Death – United States, 2003
![Page 19: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/19.jpg)
![Page 20: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/20.jpg)
EXERCISE 5
![Page 21: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/21.jpg)
EXERCISE 5
![Page 22: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/22.jpg)
EXERCISE 5
![Page 23: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/23.jpg)
EXERCISE 5
![Page 24: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/24.jpg)
EXERCISE 5
![Page 25: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/25.jpg)
EXERCISE 6
![Page 26: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/26.jpg)
EXERCISE 6
![Page 27: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/27.jpg)
EXERCISE 6
![Page 28: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/28.jpg)
![Page 29: Epidemiology lecture 4 death rates](https://reader034.fdocuments.in/reader034/viewer/2022052321/5463b259af795974338b4619/html5/thumbnails/29.jpg)