A case-control study was conducted to assess the association between exposure to tobacco smoke (TS) and lung cancer. 300 lifelong nonsmoking lung cancer cases and 1,288 nonsmoking controls were interviewed about exposure to ETS. Let cancer=I(lung cancer), ts= I(exposed to TS), gender=I(female). A logistic regression model was fit using the following SAS code proc logistic data=cancer descending; model cancer/count = ets gender ets*gender; run; Here is part of the SAS output. Analysis of Maximum Likelihood Estimates Parameter DF Estimate Standard Error Wald Chi-Square Pr > ChiSq Intercept 1 -1.8946 0.2398 62.4070 <.0001 ts 1 -0.8134 0.2926 7.7308 0.0054 gender 1 1.0512 0.2653 15.6951 <.0001 ts*gender 1 0.8450 0.3320 6.4790 0.0109 How do you estimate odds lung cancer for males with ETS exposure?
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