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haoduonge
Quartz | Level 8

Hi,

Hi all,

Can we calculate the Harrell's C indexes in competing risk model as below?

Thank you!

Hao

 

proc phreg data=out_withclass;

class X1(REF='0');

model  TIME_YRS *OUTCOME(0)=X1 X2/eventcode=1 rl;

run;

4 REPLIES 4
StatDave
SAS Super FREQ

Use the CONCORDANCE option in the PROC PHREG statement. You can also use the PLOTS=ROC, PLOTS=AUC, and ROCOPTIONS to draw and control ROC curves. See the PHREG documentation for discussion of these options and an example. 

haoduonge
Quartz | Level 8

I think it only works with Cox model, not with competing risk model (F & G), right?

Hao

StatDave
SAS Super FREQ
Sorry... that's correct. The concordance statistics (and ROC analysis) are not available with that model.
OsoGris
SAS Employee

You can try using the  CONCORDANCE option on the PROC PHREG statement.  I don't know if that's enabled, necessarily, for the competing risks analysis.  

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