PROC LIFETEST - Requesting median survival

[_maldini_]

What is the correct syntax for requesting specific statistics when doing survival analyses using PROC LIFETEST?

proc lifetest data=STAN.MELANOMA plots=survival graphics;
/* (0) The value 0 indicates a censored individual in this dataset. */
	time person_years*status(0);
/* 	strata statement produces a table for each stratum. */
/* 	The log rank test p-value tells you if the strata differ. */
	strata ulcer;
run;

For example, I want to request the median survival time and the survival probability at 10 years for one group in the STRATA statement (i.e., ulcer = 1, ulcer = 0 = no ulcer).

[Reeza · Accepted solution]

Use the TIMELIST option on  for specifying survival at 10 years. 

The median survival should be reported by default in the quartiles table.

I have a survival macro that does some standard reporting that you can check out but it's probably more than a decade old now.

https://gist.github.com/statgeek/d3bce2a9e2ef0523db9d

proc lifetest data=STAN.MELANOMA timelist=(10) plots=survival graphics;
/* (0) The value 0 indicates a censored individual in this dataset. */
	time person_years*status(0);
/* 	strata statement produces a table for each stratum. */
/* 	The log rank test p-value tells you if the strata differ. */
	strata ulcer;
run;

This assumes that your time is in years otherwise you'll need to do some unit conversions for the time.

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@_maldini_ wrote:

What is the correct syntax for requesting specific statistics when doing survival analyses using PROC LIFETEST?

proc lifetest data=STAN.MELANOMA plots=survival graphics;
/* (0) The value 0 indicates a censored individual in this dataset. */
	time person_years*status(0);
/* 	strata statement produces a table for each stratum. */
/* 	The log rank test p-value tells you if the strata differ. */
	strata ulcer;
run;

For example, I want to request the median survival time and the survival probability at 10 years for one group in the STRATA statement (i.e., ulcer = 1, ulcer = 0 = no ulcer).

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