Table 1.

Parameters required by the SAS macro.

Parameter	Description
ANALYSIS	Location of the data to be analyzed
CV	Destination for the permanent datasets created during this process
DIR	Destination for the output
CENSVR	Name of censoring variable
CNS	The value of the censoring variable that indicates censoring
PAT	Patient or observation id variable
TIMEVR	Survival time variable
K	Number of variables to include in the model (score selection). Positive integer
PERC1	First threshold percentage for # of variables included in final model (whole number)
PERC2	Second (and final) threshold percentage for output
STUDYNM	Single word name for the study (max 5 letters) – used in naming output and datasets
SURVDS	Name of the survival dataset
FACTORDS	Name of the dataset containing only PAT (see above) and predictor variables for model selection
OSPFS	Overall survival or progression-free survival analysis (values are OS or PFS) – also used in naming output and datasets
TIMEPOINT	Typically “base” for baseline readings. Used extensively in naming output and datasets