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

1. 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.
2. 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?)
3. 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.

Answer rating: 100% (QA)

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