In a case-control study investigators examined the relationship of myocardial infarction to presence of severe systolic hypertension. See data below. Calculate and interpret the OR for this study. Myocardial Infarction Systolic blood pressure status Present Absent Total Severe hypertension 180 9820 10000 Normal 30 9970 10000 Total 210 19790 20000 Severe systolic HT ?189 mm Hg. and normal systolic blood pressure < 120 Hg.
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First, we need to organize the data into a 2x2 table: | | Myocardial Infarction Present | Myocardial Infarction Absent | Total | |-----------------------|-------------------------------|------------------------------|--------| | Severe Show more…
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