A national survey is conducted to assess the association between hypertension an

Question

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 here and the numbers are in millions.

Developed Stroke

Did Not Develop Stroke

Hypertension

12

37

No Hypertension

4

26

1.) Compute the odds ratio of stroke in hypertensive as compared to non-hypertensive persons.

Developed Stroke

Did Not Develop Stroke

Hypertension

12

37

No Hypertension

4

26

Explanation / Answer

Solution:-

=> the odds ratio of stroke in hypertensive as compared to non-hypertensive persons =

-> (12/37)/(4/26)

=  0.3243/0.1538

=  2.1086

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