作者qtzbbztq (阿杰)
看板Statistics
标题[问题] 存活分析
时间Tue Jun 16 16:16:04 2009
之前看到一篇文献说
存活分析可以检定固定时间
两组的survival rate是否有差
这样的检定要如何做?
可以用sas的语言办到吗
谢谢您!
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1F：→ kingbee:能说哪一篇文献呢? 06/16 18:07
2F：→ kingbee:proc lifereg or lifetest ? 06/16 18:07
3F：→ bmka:Use Greenwood's formula (or other approximations) to 06/16 21:47
4F：→ bmka:approximate the variance of Kaplan-Meier estimator. 06/16 21:48
5F：→ bmka:A test statistic can be obtained by comparing the K-M 06/16 21:49
6F：→ bmka:estimates of two groups at a fixed time point. 06/16 21:49
7F：→ qtzbbztq:感谢楼上 可以请您告诉我greenwood 这个方法在sas该用 06/16 22:47
8F：→ qtzbbztq:什麽程式语言吗 我搜寻了一下SAS HELP没看到 谢谢您 06/16 22:47
9F：→ bmka:You may just use SAS to calculate the K-M estimator 06/17 10:14
10F：→ bmka:and print out the corresponding standard error at each 06/17 10:15
11F：→ bmka:time point.You may then calculate the value of the 06/17 10:15
12F：→ bmka:aforementioned test statistic. 06/17 10:16
13F：→ qtzbbztq:谢谢!!非常感谢 06/17 13:29