QUESTION 20 The following data were collected in a study relating hypertensive s

Question

QUESTION 20 The following data were collected in a study relating hypertensive status measured at baseline to incident stroke over 5 years. 1. Compute the cumulative incidence of stroke in the study (1.6 points) 2. Compute the cumulative incidence of stroke in patients classified as hypertensive at baseline. Cumulative Incidence Hypertensive = 3. Compute the cumulative incidence of stroke in patients free of hypertension at baseline. Cumulative Incidence Not Hypertensive- 4. Compute the risk difference of stroke in patients with hypertension as compared to patients free of hypertension. Risk Difference = 5. Compute the relative risk of stroke in patients with hypertension as compared to patients free of hypertension. Relative Risk 6. Compute the population attributable risk of stroke due to hypertension (1.6 points) (1.6 points) (1.6 points) (1.6 points) PAR (1.7 points) Free of Stroke at 5 Years 1,904 Stroke 92 Baseline: Not Hypertensive 468 36 aseline: Hypertensive T T | Paragraph ::: , 3 (12pt) ·-·-·T· Arial @f. +Mashup' . “ C) HTi.ns Path:p

Explanation / Answer

Solution

1) cumulative incidence of stroke = (92+36)/(1904+92+468+26) = 0.0512

2) Cumulativce incidence of stroke for hypertemnsive = 36/(468+36) = 0.07143

3) Cumulativce incidence of stroke for free of hypertennsion = 92/(1904+92) = 0.04609

4) risk diff = 0.07143-0.04609 = 0.02534

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