FILENAME goptions URL "http://192.38.117.59/~linearpredictors/datafiles/goptions.sas";
%include goptions;

FILENAME url URL "http://192.38.117.59/~linearpredictors/datafiles/readSurgery.sas";
%include url;

DATA surgery;
SET surgery; WHERE surgtype IN (2,3);
RUN;

/* confidence limits for complication frequencies */
/* based on logits */
    
PROC GENMOD DESCENDING DATA=surgery;
    CLASS surgtype;
    MODEL complication = surgtype / dist=binomial link=logit;
    estimate 'abdominal' intercept 1 surgtype 1 0;
    estimate 'gynecological' intercept 1 surgtype 0 1;
RUN;