white-rose
Forum Senior
Topics: 10
Posts: 88
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A group of 200 hypertensive subjects and a comparable group of 200 normotensive subjects are reruited & enrolled into a longitudinal study to examine the effect of a diagnosis of HTN on subsequent occurence of coronary heart dis. Study subjects are follwed for 5 yrs. Final data are presented in table below.
What is the attributable risk for HTN?
CHD No CHD Total
HTN 25 175 200
No HTN 10 190 200
Total 35 365 400
A. 0.075
B. 2.5
C. 2.7
D. 0.125
E. Cannot be computed for this type of study
I can't figure out how they came to the answer (A).
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| hero
Forum Guru
Topics: 42
Posts: 557
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25/200 - 10/200 = 15/200 = 0,075
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| white-rose
Forum Senior
Topics: 10
Posts: 88
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Ah! Thanks for your help!
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