作者qtzbbztq (阿杰)
看板Statistics
標題[問題] 存活分析
時間Tue Jun 16 16:16:04 2009
之前看到一篇文獻說
存活分析可以檢定固定時間
兩組的survival rate是否有差
這樣的檢定要如何做?
可以用sas的語言辦到嗎
謝謝您!
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1F：→ kingbee:能說哪一篇文獻呢? 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:感謝樓上 可以請您告訴我greenwood 這個方法在sas該用 06/16 22:47
8F：→ qtzbbztq:什麼程式語言嗎 我搜尋了一下SAS HELP沒看到 謝謝您 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:謝謝!!非常感謝 06/17 13:29