Refer to Table 3.3.

a. Fit model (5.4.3). Conduct Pearson and likelihood-ratio tests of goodness of fit, and interpret. Since the tests provide tests of equality of odds ratios, compare results to those given by the Breslow-Day test of Section 3.2.4.

b. Check Pearson or adjusted residuals to analyze further the quality of fit. Interpret.

c. For this model, conduct the likelihood-ratio test of conditional independence of smoking and lung cancer, given site. Estimate the conditional odds ratio between smoking and lung cancer. Interpret.

d. Compare results of

(c) to those obtained in Section 3.2 using CMH methods.