RELIABILITY Procedure Enhancements

The RELIABILITY procedure now supports the following statements that provide further analysis of regression models that are fit by using a MODEL statement:

  • The EFFECTPLOT statement produces a display of the fitted model and provides options for changing and enhancing the displays.

  • The ESTIMATE statement provides a mechanism for obtaining custom hypothesis tests.

  • The LSMEANS statement computes and compares least squares means of fixed effects.

  • The LSMESTIMATE statement provides a mechanism for obtaining custom hypothesis tests among least squares means.

  • The SLICE statement provides a general mechanism for performing a partitioned analysis of the least squares means for an interaction.

  • The STORE statement saves the context and results of the statistical analysis to an item store.

  • The TEST statement performs F tests for model effects that test Type I, Type II, or Type III hypotheses.

These statements are common to many SAS/STAT® procedures and are fully documented in Chapter 19: Shared Concepts and Topics in SAS/STAT 12.1 User's Guide.

PROC RELIABILITY also provides the following new features:

  • confidence bands for mean and intensity functions for recurrent events

  • two-sample log-rank-type test for recurrent events

  • trend tests for recurrent events parametric models

  • Duane plots

  • profile likelihood confidence intervals for survival function