Exercise:
The following tables were also made based on the survey data of WCGS. Risk factors are “daily numbers of cigarette smoking” and “behavior types”, which were divided into 4 groups (0, 1-20, 21-30, and 30<) and 2 groups (type A, type B), respectively.
Analyze the relationship between behavior type and coronary artery disease confounded by cigarette smoking, using stratified Mantel-Haenszel test, and estimate the common odds ratio, common relative risks, and the Breslow-Day test for homogeneity of the odds ratios.
