PREDICT Subcommand (SURVREG AFT command)
PREDICT is an optional subcommand to score and save the predicted statistics to
the active data set. If specified, one of SURVIVAL, HAZARD, and CUMHAZARD must be specified or both
PASTIME and CONDITIONALSURVIVAL must be specified.
- FUTUREDURATION
- An optional keyword to specify the time duration to define the future time values for scoring. If specified, it must be followed by a single numeric variable specified within parentheses.
- FUTUREINTERVALS
- A keyword to alternatively define the future time values. If specified, it must be followed by
two additional parameters BETWEEN and PERIODS specified within parentheses. BETWEEN controls the
time interval. It must be a single numeric value greater than 0. PERIODS controls the number of the
time periods. It must be a single numeric integer belonging to [2, 100]. Additional restrictions are
placed on FUTUREDURATION and FUTUREINTERVALS as follows:
- If either FUTUREDURATION or FUTUREINTERVALS is specified, the scoring of SURVIVAL, HAZARD, and CUMHAZARD will be based on the time values defined by either of them. Otherwise, the scoring is based on the time variable specified for the parametric survival model.
- If both FUTUREDURATION and FUTUREINTERVALS are specified, the process will check if the variable specified for FUTUREDURATION is valid. If it is a valid setting, FUTUREINTERVALS will be ignored, and the scoring is based on the time values defined by FUTUREDURATION. Otherwise, the scoring is based on FUTUREINTERVALS, and FUTUREDURATION will be ignored.
- SURVIVAL
- An optional keyword to score and save the predicted survival statistics to the active data set. The keyword is suppressed by default. If specified, it could be followed by an optional user-supplied variable name (or root name) specified within parentheses. The default name is "PredSurvival."
- HAZARD
- An optional keyword to score and save the predicted hazards to the active data set. The keyword is suppressed by default. If specified, it could be followed by an optional user-supplied variable name (or root name) specified within parentheses. The default name is "PredHazard."
- CUMHAZARD
- An optional keyword to score and save the predicted cumulative hazards to the active data set. The keyword is suppressed by default. If specified, it could be followed by an optional user-supplied variable name (or root name) specified within parentheses. The default name is "PredCumHazard."
- PASTTIME
- An optional parameter to specify the past time values for scoring. If specified, it must be followed by a single numeric variable specified within parentheses. If CONDITIONALSURVIVAL is not specified, the process will be ignored.
- CONDITIONALSURVIVAL
- An optional keyword to score and save the predicted conditional survival statistics to the active data set. The keyword is suppressed by default. If specified, it could be followed by an optional user-supplied variable name specified within parentheses. The default name is "PredConditionalSurvival." The process will be ignored if PASTTIME is not specified.