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High blood pressure and cardiovascular disease. There is much evidence that high blood pressure is associated with increased risk of death from cardiovascular disease. A major study of this association examined 3338 men with high blood pressure and 2676 men with low blood pressure. During the period of the study, 21 men in the low-blood-pressure group and 55 in the high-blood-pressure group died from cardiovascular disease.
(a) Find the proportion of men who died from cardiovascular disease in the high-blood-pressure group. Then calculate the odds.
(b) Do the same for the low-blood-pressure group.
(c) Now calculate the odds ratio with the odds for the high-blood-pressure group in the numerator. Describe the result in words.
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