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 StrokeBaseline: Not hypertensive 1000 50Baseline: Hypertensive 300 501. Compute the cumulative incidence of stroke in patients classified as hypertensive at baseline.A) 0.20B) 0.50C) 0.0625D) 0.05

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Answer:

None of the options are correct.

The cumulative incidence of stroke in patients classified as hypertensive at baseline = 0.625

Step-by-step explanation:

The table properly drawn is that

Baseline - Not hypertensive

Free of stroke at 5 years | Stroke | Total

1000 | 50 | 1050

Baseline - Hypertensive

Free of stroke at 5 years | Stroke | Total

300 | 501 | 801

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

Number of patients classified as hypertensive at baseline = 801

number of stroke incidents amongst patients classified as hypertensive at baseline = 501

The cumulative incidence of stroke in patients classified as hypertensive at baseline = (501/801) = 0.625

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