I am looking to do a Kaplan Meier analysis to look at survival in two groups. I have 21 people in group A and 17 people in group B. 5 people in group B died at various times, 0 people in group A died, ie all my data is censored for Group A.
I am getting a log-rank p-value of 0.028 when I do the KM analysis. My question is can I still use the KM for survival analysis given the absence of events in one group and if so, is the p-value valid.
Thanks in advance