Question

1. A cohort study is conducted to assess the association between clinical characteristics and the risk of stroke. The study involves n=1,370 participants who are free of stroke at the study start. Each participant is assessed at study start (baseline) and every year thereafter for five years. The following table displays data on hypertension status measured at baseline to incident stroke over 5 years

	Free of Stroke at 5 Years	Stroke
Baseline: Not Hypertensive	1,000	50
Baseline: Hypertensive	300	20

Computer the cumulative incidence of stroke in patients classified as hypertensive at baseline.

A. 0.20

B. 0.50

C. 0.0625

D. 0.05

2. 1,000 people are enrolled in a 10-year cohort study. At the start of the study, 100 have diagnosed CVD. Over the course of the study, 80 people who were free of CVD at baseline develop CVD. What is the cumulative incidence at 10 years?
A) 0.089
B) 0.10
C) 0.50
D) 1

Answer 1

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