topic Re: Creating cumulative incidence curves with number-at-risk tables in Statistical Procedures

Creating cumulative incidence curves with number-at-risk tables

ChrisMac — Wed, 27 Sep 2017 10:10:11 GMT

Hi,

I have some problems creating cumulative incidence curves with number-at-risk tables. I am using the %CIF-macro, though it does not provide me any information on number-at-risk at any given time.

Thanks in advance!

Re: Creating cumulative incidence curves with number-at-risk tables

Reeza — Wed, 27 Sep 2017 14:31:04 GMT

If you're using SAS 9.4 it supports the Cumulative Incidence Risk within PROC PHREG

Re: Creating cumulative incidence curves with number-at-risk tables

ChrisMac — Wed, 27 Sep 2017 16:44:27 GMT

Hi Reeza!

Thanks for the reply. However, PROC PHREG does not provide me with the numbers at risk at any given time 😕

Re: Creating cumulative incidence curves with number-at-risk tables

Reeza — Wed, 27 Sep 2017 17:06:38 GMT

The OUTCIF dataset on PROC LIFETEST - sorry wrong proc initially.

It seems to generate the ATRISK numbers....add the OUTCIF option as specified in the docs to the following example:

http://documentation.sas.com/api/docsets/statug/14.2/content/statug_code_liftex4.htm?locale=en

http://documentation.sas.com/?docsetId=statug&docsetTarget=statug_lifetest_syntax01.htm&docsetVersion=14.2&locale=en#statug.lifetest.lftoutcif

Re: Creating cumulative incidence curves with number-at-risk tables

ChrisMac — Fri, 29 Sep 2017 22:16:09 GMT

OUTCIF only works in SAS/STAT and not SAS 9.4 unfortunately 😞

Re: Creating cumulative incidence curves with number-at-risk tables

Reeza — Sat, 30 Sep 2017 02:14:42 GMT

@ChrisMac wrote:

OUTCIF only works in SAS/STAT and not SAS 9.4 unfortunately 😞

If you don't have SAS STAT how are you doing any survival analysis...

I'm assuming that means you're not on SAS 9.4, because it's definitely available in 9.4 - I did test before responding.

Re: Creating cumulative incidence curves with number-at-risk tables

ChrisMac — Tue, 14 Nov 2017 13:49:30 GMT

Hi,

I do have SAS 9.4. However, it wont run. This is the output:

proc lifetest data=surgery2; time follow_up*death(0); run;

This one works. However, the next one does not work:

57 proc lifetest data=surgery2 outcif=test3; time follow_up*death(0); run;
------
22
76
ERROR 22-322: Syntax error, expecting one of the following: ;, (, AALEN, ALPHA, ALPHAQT,
ANNOTATE, ATRISK, BANDMAX, BANDMAXTIME, BANDMIN, BANDMINTIME, CENSOREDCOLOR,
CENSOREDSYMBOL, CONFBAND, CONFTYPE, DATA, DESCRIPTION, EVENTSYMBOL, FORMCHAR, GOUT,
GRAPHICS, INTERVALS, LANNOTATE, LINEPRINTER, MAXTIME, METHOD, MISSING, NELSON,
NINTERVAL, NOCENSPLOT, NOLEFT, NOPRINT, NOTABLE, OUTS, OUTSURV, OUTT, OUTTEST,
PLOTS, REDUCEOUT, SID, SINGULAR, STDERR, TIMELIM, TIMELIST, WIDTH.

ERROR 76-322: Syntax error, statement will be ignored.

Likewise, this one doesn't work either:

58 proc lifetest data=surgery2 plots=cif(test); time follow_up*death(0); run;
---
22
76
ERROR 22-322: Syntax error, expecting one of the following: (, ALL, CENSOR, CENSORED, D, DENSITY,
H, HAZ, HAZARD, LLS, LOGLOGS, LOGSURV, LS, NONE, P, PDF, S, SUR, SURV, SURVIVAL.

ERROR 76-322: Syntax error, statement will be ignored.

Re: Creating cumulative incidence curves with number-at-risk tables

Rick_SAS — Tue, 14 Nov 2017 14:11:53 GMT

The OUTCIF= option was added in SAS/STAT 14.1, which was released as part of 9.4M3 in July 2015.

You can submit the statement

%put &=SYSVLONG;

and look in the SAS log to find your version of SAS.