@tblock I can see your question was posted and already has a few answers.  In case you're not getting notifications, the question is: https://communities.sas.com/t5/SAS-Programming/How-do-I-create-variable-to-indicate-a-binary-variable-changes/m-p/862372 ... View more

Here is code to do this using PROC SUMMARY instead of PROC UNIVARIATE. The output data set which I call _STATS_ contains what you want.   proc format; value lab1f low-<6='PreLab1 < 6' 6-high='PreLab1 >= 6'; value lab2f low-<130='PreLab2 < 130' 130-high = 'PreLab2 >= 130'; run; data want; set labs; changelab1=postlab1-prelab1; changelab2=postlab2-prelab2; if changelab1=. then call missing(prelab1,postlab1); if changelab2=. then call missing(prelab2,postlab2); format prelab1 lab1f. prelab2 lab2f.; run; proc summary data=want; class prelab1 prelab2; ways 1 2; var prelab1 prelab2 postlab1 postlab2 changelab1 changelab2; output out=_stats_ n= mean= stddev=/autoname noinherit; run; ... View more

You want this ?   data help; input modelstep var1 $ var2 $ var3 $ var4 $ var5 $ outcome auc; datalines; 0 v1 v2 v3 v4 v5 1 0.003 1 v1 v2 v3 . v5 1 0.004 2 v1 v2 v3 . . 1 0.007 3 . v2 v3 . . 1 0.01 4 . . v3 . . 1 0.02 0 v1 v2 . v4 v5 2 0.005 1 v1 . . v4 v5 2 0.006 2 v1 . . . v5 2 0.02 3 v1 . . . . 2 0.03 ; run; data want; set help; lag_auc1=lag(auc); lag_auc2=lag2(auc); lag_auc3=lag3(auc); lag_auc4=lag4(auc); dif_auc1=dif(auc); dif_auc2=dif2(auc); dif_auc3=dif3(auc); dif_auc4=dif4(auc); if outcome ne lag(outcome) then call missing(lag_auc1,dif_auc1); if outcome ne lag2(outcome) then call missing(lag_auc2,dif_auc2); if outcome ne lag3(outcome) then call missing(lag_auc3,dif_auc3); if outcome ne lag4(outcome) then call missing(lag_auc4,dif_auc4); lag_modelstep=lag(modelstep); if round(dif_auc1,1e-6) ne 0.01 or outcome ne lag(outcome) then call missing(lag_modelstep); run; ... View more

Thank you so much! ... View more