ods graphics on;
proc phreg data=ex plots=(s);
model t*c(0)=A B;
run;

生存曲线是最常见的生存分析的方法。可以参考如下。
Because the baseline hazard is unspecified in PH model , i am not sure we can do survival curves without giving BASELINE statement in phreg(we got to tell the survival function wer are interested). Anyway, the right procedure, and the most commonly used,  for survival curves should be  proc LIFETEST.
京剧

http://blog.sina.com.cn/s/blog_a3a92636010154mm.html