Stat 539 Biostatistics II Spring 2006

Homework 10 due 4/27/2006

Do Exercise 7 p. 143 in Hills and De Stavola, but - 

- Make sure you get appropriate Kaplan-Meier curves
- Do a log-rank test on equality of survival distributions for drug groups
- Be sure to include age in your PH analysis
- Be sure to check the PH assumptions

Write a complete summary of your analysis including comparisons of the drugs 
to placebo and each other as well as adjustments for age.