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From: Agus on 23 Mar 2010 05:02
Hi all!

Anyone knows what is the difference between "Somers' D in FREQ
Procedure" and "Somers' D in LOGISTIC Procedure"? I've got, sometimes,
different results.

Examples:

proc freq data=DATA;
tables event*Score / trend measures cl noprint;
output out=resultat smdcr;
test smdcr;
exact trend / maxtime=60;
run;


PROC LOGISTIC DATA=DATA;
MODEL event=Score / SELECTION=NONE LINK=LOGIT
OUTROC=TABLE_OUT ROCEPS=0.0001;
RUN;


Results:

PROC FREQ: Somers' D C|R 0.8130
PROC LOGISTIC: Somers' D 0.794

THANKS A LOT!!!

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