KM
KM is available in SPSS® Statistics Standard Edition or the Advanced Statistics Option.
KM
uses the Kaplan-Meier (product-limit) technique to describe and analyze the
length of time to the occurrence of an event, often known as survival time.
KM varname [BY factor varname]
/STATUS = varname [EVENT](vallist) [LOST(vallist)]
[/STRATA = varname]
[/PLOT = [SURVIVAL][LOGSURV][HAZARD][OMS]]
[/ID = varname]
[/PRINT = [TABLE**][MEAN**][NONE]]
[/PERCENTILES = [(]{25, 50, 75 }[)]]
{value list }
[/TEST = [LOGRANK**][BRESLOW][TARONE]]
[/COMPARE = [{OVERALL**}][{POOLED**}]]
{PAIRWISE } {STRATA }
[/TREND = [(METRIC)]]
[/SAVE = tempvar[(newvar)],...]
**Default if the subcommand or keyword is omitted.
Temporary variables created by Kaplan-Meier are:
SURVIVAL
HAZARD
SE
CUMEVENT
This command reads the active dataset and causes execution of any pending commands. See the topic Command Order for more information.
Syntax for the KM command can be generated from the Kaplan-Meier Survival Analysis dialog.
Example
KM LENGTH BY SEXRACE
/STATUS=EMPLOY EVENT (1) LOST (2)
/STRATA=LOCATION.