FOCUS AREAS

SAS/STAT Topics

SAS/STAT Software

SURVEYPHREG Procedure


The SURVEYPHREG procedure performs regression analysis based on the Cox proportional hazards model for sample survey data. Cox's semiparametric model is widely used in the analysis of survival data to estimate hazard rates when adequate explanatory variables are available. The following are highlights of the SURVEYPHREG procedure's features:

  • computes hazard ratios estimates
  • computes variances of the regression parameters by using the following methods:
    • Taylor series (linearization)
    • balanced repeated replication (BRR)
    • delete-1 jackknife
  • produces the following observation-level output statistics:
    • predicted values and their standard errors
    • martingale residuals
    • Schoenfeld residuals
    • score residuals
    • deviance residuals
  • enables you to employ Fay's method with BRR
  • enables you to input or output a SAS data set containing a Hadamard matrix for BRR
  • enables you to import or export SAS data sets containing replicate weights for BRR or jackknife methods
  • provides analysis for subpopulations, or domains, in addition to analysis for the entire study population
  • supports programming statements that enable you to include time-dependent covariates in the model
  • performs BY group processing, which enables you to obtain separate analyses on grouped observations (distinct from subpopulation analysis)
  • enables you to test linear hypotheses about the regression parameters
  • enables you to estimate a linear function of the regression parameters
  • creates a SAS data set that contains the estimated linear predictors and their standard error estimates, the residuals from the linear regression, and the confidence limits for the predictors
  • creates a SAS data set that contains the jackknife coefficients
  • saves the context and results in an item store that can be processed with the PLM procedure
  • creates a SAS data set that corresponds to any output table
  • automatically creates graphs by using ODS Graphics

For further details see the SAS/STAT User's Guide: The SURVEYPHREG Procedure
( PDF | HTML )

Examples