4) 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

Computethecumulativeincidenceofstrokeinpersonsover75yearsofagecumulativeincidence=ComputetheRelativeRiskofstrokeinhypertensiveascomparedtonon-hypertensivepersons relative risk=Compute the Odds Ratio of stroke in hypertensive as compared to non- hypertensive persons

Odds Ratio =