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The second model which has added comorbidity_score, unemp_rate and age*sex interaction to the model in part 1. Now compare the AIC and C-Statistic between the
The second model which has added comorbidity_score, unemp_rate and age*sex interaction to the model in part 1. Now compare the AIC and C-Statistic between the models. Which Model provides a better fit to the data. Do the results/interpretation for age, sex and urban/rural change when the new variables are added?