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 years follow up period. The data are summarized below and the numbers are in millions.
Developed stroke did not develop 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