Hello,   I'm a new sas user, so firstly I'm sorry if these questions are dumb. 🙂   I'm basically doing a binary logistic regression, in order to predict my target variable (inactive=0, active=1) and I've randomly split the data into training (70%) and testing data (30%).   I used the proc logistic to run the logistic regression and now I need to understand if my model is overfitting /underfitting the data or not.   Does anyone have any suggestions for analyzing overfitting with proc logistic? Are we able to do learning curves?   proc logistic data=train; class country gender / param=glm; model y(event='1')=income var2 var3 /link=logit ctable selection=backward slstay=0.05 hierarchy=single technique=fisher outroc=troc maxiter=50; score data=test out=valpred outroc=vroc; roc; roccontrast; run;   Thank you all in advance, Joana   ... View more