A cohort study is conducted to assess the association between clinical characteristics and the risk of stroke. The study involves n = 1370 participants who are free of stroke at the study start. Each participant is assessed at study start (baseline) and every year thereafter for 5 years. The following data were collected relating hypertensive status measured at baseline to incident stroke over 5 years.   Free of Stroke at 5 years Stroke Baseline: Not hypertensive 1000 50 Baseline: Hypertensive 300 520 Compute the cumulative incidence of stroke in patients classified as hypertensive at baseline.A)0.20B)0.50C)0.0625D)0.05 I followed the directions as shown in a similar question 20/70 patients with hypertension and stroke divided by patients with stroke however, I do not come up with a correct answer

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A cohort study is conducted to assess the association between clinical characteristics and the risk of stroke. The study involves n = 1370 participants who are free of stroke at the study start. Each participant is assessed at study start (baseline) and every year thereafter for 5 years. The following data were collected relating hypertensive status measured at baseline to incident stroke over 5 years.

  Free of Stroke at 5 years Stroke
Baseline: Not hypertensive 1000 50
Baseline: Hypertensive 300 520


Compute the cumulative incidence of stroke in patients classified as hypertensive at baseline.
A)0.20
B)0.50
C)0.0625
D)0.05

I followed the directions as shown in a similar question 20/70 patients with hypertension and stroke divided by patients with stroke however, I do not come up with a correct answer

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