topic Interaction term in logistic regression with PROC GENMOD in Statistical Procedures https://communities.sas.com/t5/Statistical-Procedures/Interaction-term-in-logistic-regression-with-PROC-GENMOD/m-p/23462#M803 <HTML><HEAD></HEAD><BODY><P> I've found the answer. Just put the numeric variables in the CLASS statement. This makes them as classification variables.</P></BODY></HTML> Thu, 30 Jun 2011 09:37:40 GMT Ruth 2011-06-30T09:37:40Z Interaction term in logistic regression with PROC GENMOD https://communities.sas.com/t5/Statistical-Procedures/Interaction-term-in-logistic-regression-with-PROC-GENMOD/m-p/23461#M802 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I plan to perform a logistic regression using PROC GENMOD, and test the interaction between age and sex.&nbsp; Age is represented by the numeric variable 'agegroup' in the dataset.</P><P></P><P>For the interaction term, agegroup*sex, sex is a character variable, but agegroup is numeric.&nbsp; My question is whether I should explicitly covert agegroup from numeric to character. Or PROC GENMOD automatically treats the numeric value as character, when the other variable is already character.</P><P></P><P>Thanks in advance.</P></BODY></HTML> Thu, 30 Jun 2011 09:27:44 GMT https://communities.sas.com/t5/Statistical-Procedures/Interaction-term-in-logistic-regression-with-PROC-GENMOD/m-p/23461#M802 Ruth 2011-06-30T09:27:44Z Interaction term in logistic regression with PROC GENMOD https://communities.sas.com/t5/Statistical-Procedures/Interaction-term-in-logistic-regression-with-PROC-GENMOD/m-p/23462#M803 <HTML><HEAD></HEAD><BODY><P> I've found the answer. Just put the numeric variables in the CLASS statement. This makes them as classification variables.</P></BODY></HTML> Thu, 30 Jun 2011 09:37:40 GMT https://communities.sas.com/t5/Statistical-Procedures/Interaction-term-in-logistic-regression-with-PROC-GENMOD/m-p/23462#M803 Ruth 2011-06-30T09:37:40Z