topic Re: Gray's test in prior version of SAS/STAT in Statistical Procedures

Gray's test in prior version of SAS/STAT

drhwint — Sat, 15 Aug 2020 14:30:26 GMT

I'm trying to analyze claim data using competing risk model.

Unfortunately, SAS Enterprise Guide does not support Gray's test using PROC LIFETEST. Maybe it contains SAS/STAT 13.x.

I knew there was an %CIF macro for Gray's test, it would not be helpful because I should consider the IPTW.

Is there any good way to get P value of Gray's test in this situation?

Thanks.

Re: Gray's test in prior version of SAS/STAT

ChrisHemedinger — Sat, 15 Aug 2020 16:23:35 GMT

Moved this to the Stats Procs board.

Your version of SAS/STAT is independent of SAS Enterprise Guide -- the version of SAS/STAT depends on the SAS environment you connect to. You can use proc product_status; run; to see the versions of software in your SAS environment.

Re: Gray's test in prior version of SAS/STAT

Tom — Sun, 16 Aug 2020 18:53:22 GMT

Did you try just writing a code block to call the macro you mentioned?

Not sure what version of SAS/STAT you are running on the SAS server you are using with EG, but on mine here is the header for the autocall macro CIF. Looks like it has existed since version 9.2 of SAS which was a long time ago. Do you have IML and GRAPH licensed?

/*****************************************************************/
 /*          S A S   A U T O C A L L   L I B R A R Y              */
 /*                                                               */
 /*   NAME : CIF                                                  */
 /*   TITLE: Estimate Cumulative Incidence Function and           */
 /*          Compare Cumulative Incidence Functions across Samples*/
 /* PRODUCT: STAT                                                 */
 /*  SYSTEM: ALL                                                  */
 /*    KEYS: survival data, failure probability, competing risks  */
 /*   PROCS:                                                      */
 /*    DATA:                                                      */
 /* SUPPORT: Guixian Lin                UPDATE:  Mar2012          */
 /*          Ying So                    UPDATE:  Jun2014          */
 /*     REF: Klein  and Moeschberger   (2003)                     */
 /*          Marubini and Valsecchi    (1995)                     */
 /*          Gray                      (1988)                     */
 /*    MISC: The %CIF macro requires Base SAS and SAS/IML.        */
 /*          SAS/GRAPH is also required in SAS 9.2                */
 /*****************************************************************/

/*------------------------------------------------------------------
The %CIF macro computes the crude cumulative incidence function
estimates for homogeneous (no covariates) survival data whose
endpoints are subjected to competing risks (Klein and
Moeschberger, 2003). Standard errors and pointwise confidence
limits are also computed. The estimated cumulative incidence curve
is plotted as a  step function using ODS graphics. You can also
display the pointwise confidence limits in the plot by specifying
the PLOTCL keyword in the OPTIONS= argument. If you do not want any
plots, you can suppress it by specifying the NOPLOT keyword in the
OPTIONS= argument.

If the data contains multiple samples identified by the GROUP= variable,
the %CIF macro computes a cumulative incidence curve for each group, and
the macro also compares cumulative incidence functions between groups
using the method of Gray (1988).

...

Re: Gray's test in prior version of SAS/STAT

drhwint — Fri, 21 Aug 2020 02:10:55 GMT

Thank you for answering.

When I checked with the code you sent, the SAS/STAT version was confirmed as 13.2.

SAS/GRAPH is identified as 9.4_M2.

Thanks.

Re: Gray's test in prior version of SAS/STAT

drhwint — Fri, 21 Aug 2020 02:12:40 GMT

SAS/IML is version 13.2. I think, it is difficult to use the macro you sent because I know that weights cannot be applied in this macro.

Thanks.