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Anne
Posts:
14
Registered:
4/1/06


Any model for an increasingconstantincreasing cumulative hazard?
Posted:
May 19, 2006 8:49 PM


I use SAS's PROC LIFETEST with method=KaplanMeier to analyze a data set with censored and uncensored observations. The plot of the cumulative hazard (negative of the log of the survival) versus the survival time shows an increasingconstantincreasing curve. It looks like a 45 degree (slope=1) line from t0 to t1, a horizontal line from t1 to t2, and then a 45 degree (slope=1) line from t2 to infinity. Could you please help me if any model can fit this data? Or, did I do something wrong on the analysis? Thanks.
Jennifer



