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Results tagged with survival
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user 409279
Survival analysis models time to event data, typically time to death or failure time. Censored data are a common problem for survival analyses.
1
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0
answers
290
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How does the "ZPH" option of PROC PHREG in SAS 9.4 works?
As I saw in SAS 9.4 documentation, the "ZPH" option in PROC PHREG statement requests diagnostics based on the weighted Schoenfeld residuals for checking the proportional hazards assumption. Then I use …
- 123
11
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1
answer
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SAS and R produced different results for the same cox ph model on the same data
In SAS, I used Proc phreg, while coxph function in Survival package, the model formula are totally the same, but I got different results (e.g., coefficients), what's the reason? … 12 1 3.06 High 0
39 Placebo 15 1 2.3 Medium 0
40 Placebo 17 1 2.95 Medium 0
41 Placebo 22 1 2.73 Medium 0
42 Placebo 23 1 1.97 Low 1
Time: Survival …
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