topic Re: proc lifetest , weight in Statistical Procedures

proc lifetest , weight

Ivy — Fri, 19 Nov 2021 16:44:40 GMT

The weight statement in proc lifetest can not output weighted ods table of CENSOREDSUMMARY.

Any clue?

Thanks!

ods exclude PRODUCTLIMITESTIMATES;
ODS OUTPUT QUARTILES = SURVQTLE CENSOREDSUMMARY = SURVNUM;
ods graphics on;
PROC LIFETEST DATA=_adtte METHOD=KM ALPHA = 0.05 plots=survival(atrisk);
strata trtpn;
TIME aval1*CNSR(1);
weight ipw;
RUN;
ods graphics off;

Re: proc lifetest , weight

ballardw — Fri, 19 Nov 2021 17:48:07 GMT

From the documentation it appears that the CensoredSummary depends on Method used and your method is not one of them.

CensoredSummary

Number of event and censored observations

PROC LIFETEST METHOD=PL | B | FH

Re: proc lifetest , weight

Ivy — Fri, 19 Nov 2021 17:55:19 GMT

Thank you, ballardw.
PL = KM , we can get "CensoredSummary" , but the problem is the summary is not weighted.

Re: proc lifetest , weight

Ksharp — Sat, 20 Nov 2021 13:38:47 GMT

Make a complete table ?

data new_adtte;
set _adtte;
do i=1 to ipw;
output;
end;

PROC LIFETEST DATA=new_adtte ...............

Re: proc lifetest , weight

sbxkoenk — Sat, 20 Nov 2021 20:23:55 GMT

Hello,

Not sure if there's a "way around" here...

Documentation WEIGHT statement (LIFETEST procedure) says :

You can use the WEIGHT statement only for the Kaplan-Meier curves. Other methods of estimating the survival curves using weights are not available.

Documentation "CensoredSummary" ODS Table Name (LIFETEST procedure) says :

CensoredSummary

Number of event and censored observations

PROC

METHOD=BRESLOW | FH | PL

I am / was looking at SAS 94 M7 documentation.

Regards,

Koen

Re: proc lifetest , weight

Ivy — Tue, 23 Nov 2021 13:08:53 GMT

Thank you very much.
SAS 9.4 dose not have that statement.
I am glad the newer version document this.