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A Swedish study considered the effect of low-dose aspirin on reducing the risk of stroke and heart attacks among people who have already suffered a stroke (Lancet 338: 1345-1349 (1991). Of 1360 patients, 676 were randomly assigned to the aspirin treatment (one low-dose tablet a day) and 684 to a placebo treatment. During a follow-up period averaging about three years, the number of deaths due to myocardial infarction were 18 for the aspirin group and 28 for the placebo group. a. Calculate and interpret the difference of proportions, relative risk of death, and the odds ratio. b. Conduct an inferential analysis for these data. Interpret results.

math   Statistics-And-Probability   
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トJoportion death →トlacebo → 8/676-0.026 (Pa) ) ublenen ce-> 0.041-0.026 = O.015 0.015 ligher in plaebo poopantion p2 odda o⅓deoth tor placebo i) 1.6 times higher than Sun

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