A prospective cohort study of 1,000 women, aged 30-70 years or older at baseline, reported the following
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Question:
A prospective cohort study of 1,000 women, aged 30-70 years or older at baseline, reported the following numbers of cases of diabetes (DM) during 10 years of observation:
Age at Entry (yrs) | Number at Risk | Number of Diabetes Cases | 10-Year DM Cumulative Incidence (%) | 10-Year DM Incidence Odds | ||||
30-40 | 280 | 44 | ||||||
40-50 | 222 | 39 | ||||||
50-60 | 248 | 59 | ||||||
60-70 | 250 | 50 | ||||||
Total | 1,000 | 192 |
- Calculate the total and age-specific (i.e. for each 10 year age group) cumulative incidence and the incidence odds and complete the table above.
- Summarize these findings for both cumulative incidence and incidence odds in two sentences or less. (HINT: What was the relationship observed between age and diabetes incidence for these women?)
- Does the incidence odds provide a good estimate of the cumulative incidence for all the age groups? Why or why not?
*Please note that new the values of new cases required for the calculation of cumulative incidence have not been provided.
Related Book For
Statistics Informed Decisions Using Data
ISBN: 9780134133539
5th Edition
Authors: Michael Sullivan III
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