How to Loop through a datastep reusing a variable with multiple categories

[Deanna_Payne]

I know there must be a way to loop through a datastep using 1 variable with multiple categories but I can't figure it out how. If someone could help me out that would be great.

I want to repeat the data step below using all of the different categories within the variable "Priority"

The control should stay priority = 2

But I want the case persons to loop through the other categories = 1, 3, 4, 5 so that I get 4 different Odds Ratios

proc format;

VALUE CC
1 = "CONTROL"
2 = "CASE"
3 = "EXPOSURE+"
4 = "EXPOSURE-";

run;

%LET EXPOSURE = NRT ;

DATA want;
SET have;

/* CONTROL PERSON = WHITE FORMER SMOKER*/
IF PRIORITY = 2 AND SMOKE=4 THEN CCGROUP = 1;
/* CASE PERSON = INDV PRIORITY GROUP + CURRENT SMOKER*/
IF PRIORITY = 5 AND SMOKE=5 THEN CCGROUP = 2;

/* EXPOSURE (+) YES USED NRT*/
IF &EXPOSURE = 1 THEN CCGROUP = 3;
/* EXPOSURE (-) DID NOT USE NRT */
IF &EXPOSURE = 2 THEN CCGROUP= 4;

FORMAT CCGROUP CC. ;
RUN;

PROC FREQ DATA= COMPARISONGROUPS ORDER=FREQ;
TABLES CCGROUP*EXP / OR;
RUN;

[Kurt_Bremser]

Your code steps have no relation to each other; in one you create dataset want from dataset have, in the other you use dataset comparisongroups.

Please show us the code you really run to get a single result, and present the source data for this code in usable form (in a data step with datalines, so we can quickly and unambiguously recreate your example data).