A case-control study was conducted to examine the association between lung cancer and smoking in men. The case group contains 500 patients, who were diagnosed with lung cancer. Five hundred age-matched patients were recruited as controls. The study found that 50% of cases were regular smoking and the proportion is 20% among controls. a. Create a 2x2 table based on the given information
A case-control study was conducted to examine the association between lung cancer and smoking in men. The case group contains 500 patients, who were diagnosed with lung cancer. Five hundred age-matched patients were recruited as controls. The study found that 50% of cases were regular smoking and the proportion is 20% among controls.
a. Create a 2x2 table based on the given information
Two by Two Contingency Table: The two by two contingency table (also called fourfold contingency table) represents two classifications of a set of counts or frequencies. The two rows represent classifications of one variable and the two columns represent classifications of another variable.
For example, a count report of cigarette smokers and having lung cancer. The two rows represent the count of smokers and non-smokers while the two columns represent the count of people having lung cancer and those not having lung cancer.
The sum of row totals and the sum of column totals must match and should be equal to the total count or frequency.
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