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Introduction to Survival Analysis Procedures

The LIFETEST Procedure

The LIFETEST procedure computes nonparametric estimates of the survival distribution function. You can request either the product-limit (Kaplan-Meier) or the life table (actuarial) estimate of the distribution. The texts by Cox and Oakes (1984) and Kalbfleisch and Prentice (1980) provide good discussions of the product-limit estimator, and the texts by Lee (1992) and Elandt-Johnson and Johnson (1980) include detailed discussions of the life table estimator. The procedure also computes rank tests of association of the survival time variable with other concomitant variables as given in Kalbfleish and Prentice (1980, Chapter 6).

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