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427-2013: Creating and Customizing the Kaplan-Meier ...

Paper 427-2013 Creating and Customizing the Kaplan-Meier survival Plot in PROC LIFETESTW arren F. Kuhfeld and Ying So, SAS Institute you are a medical, pharmaceutical, or life sciences researcher, you have probably analyzed time-to-event data (survivaldata). One of several survival analysis procedures that SAS/STAT provides, the LIFETEST procedure computesKaplan- meier estimates of the survivor functions and compares survival curves between groups of patients. You can usethe Kaplan-Meier plot to display the number of subjects at risk, confidence limits, equal-precision bands, Hall-Wellnerbands, and homogeneity testp-value.

The LIFETEST procedure in SAS/STAT is a nonparametric procedure for analyzing survival data. You can use PROC LIFETEST to compute the Kaplan-Meier (1958) curve, which is a nonparametric maximum likelihood estimate of the survivor function. You can display the Kaplan-Meier plot that contains step functions representing the Kaplan-Meier

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