| To: | s-news@lists.biostat.wustl.edu |
|---|---|
| Subject: | max number of variables in coxph |
| From: | carol white <wht_crl@yahoo.com> |
| Date: | Sun, 20 May 2007 06:11:51 -0700 (PDT) |
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Dear All, Knowing the number of samples and censored patients in a data set, is there any way to find out how many variables (max) should be used so that a solution for the maximum partial likelihood estimation in cox regression using coxph would exist? thanks carol
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