Posted: September 7th, 2016

Compute the cumulative incidence of stroke in persons over 75 years of age.

A national survey is conducted to assess the association between hypertension and stroke in persons over 75 years of age with a family history of stroke. Development of stroke is monitored over a 5-year follow-up period. The data are summarized below and the numbers are in millions.
TABLE 3–13 Hypertension and Development of Stroke
Developed Stroke Did Not Developed Stroke
Hypertension 12 37
No hypertension 4 26
• a. Compute the cumulative incidence of stroke in persons over 75 years of age.
• b. Compute the relative risk of stroke in hypertensive as compared to non-hypertensive persons.
• c. Compute the odds ratio of stroke in hypertensive as compared to non-hypertensive persons
11.
In a nursing home, a program is launched in 2005 to assess the extent to which its residents are affected by diabetes. Each resident has a blood test, and 48 of the 625 residents have diabetes in 2005. Residents who did not already have diabetes were again tested in 2010, and 57 residents had diabetes.
• a. What is the prevalence of diabetes in 2005?
• b. What is the cumulative incidence of diabetes over 5 years?
• c. What is the prevalence of diabetes in 2010 (assume that none of the residents in 2005 have died or left the nursing home)?