Dear Statalist,
I am interested in calculating the difference between the survival rates of two groups at a specific time point with respective confidence intervals. E.g., I would like to know at month 36 what is the survival rate diference between intervention A and B. Hypothetically, the result I expect should be something like: %A - %B = 5.6%, 95% CI (3.1% - 7.9%).
I tried to play with sts list [sts list, at(36) by(group)], but it only describes the survival rates at specific time points. Also, the option "compare" of sts list only puts the rates side by side without actually reporting the diference with 95% CI.
Any idea?
Thank you all very much in advance,
Arlindo