In a case-control study by Bonita et al., the relationship between smoking and the incidence of...
In a case-control study by Bonita et al., the relationship between smoking and the incidence of premature stroke was assessed. The study included 132 cases (e.g. stroke) and 1,586 controls (e.g. no stroke). Among the cases, 66 were smokers. Among the controls, 424 were smokers.
1) If you set up a two by two table, what number would be A?
2) If you set up a two by two table, what number would be D?
3) If you set up a two by two table, what number would be A + C?
4) and What would be the odds of stroke among those who smoked compared to those who did not?
Homework Answers
Q1. A. Cases exposed: 66
Q2. D. Controls unexposed: 1162
Q3. A+C. Total cases: 132
Q4. The odds of smoke among those who smoked compared to those who did not will be 2.72.
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