topic odds ratio estimates for interaction terms with GLIMMIX in Statistical Procedures https://communities.sas.com/t5/Statistical-Procedures/odds-ratio-estimates-for-interaction-terms-with-GLIMMIX/m-p/160567#M8350 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I was wondering how to obtain OR estimates and confidence intervals for a fixed effects model I am fitting with GLIMMIX (GLM with logit link)- so basically a logistic regression.</P><P>I am able to obtain predicted probabilities at each level of the interaction with the lsmeans statement:</P><P>lsmeans var_a*var_b/ilink cl, and realize that I can probably exponentiate the parameter estimates for each interaction term to obtain odds ratios (provided I've set my referent group for both var a and var b), but the confidence intervals are tricky. Can I use a command or option in the lsmeans statement to automate this and make it easier?</P><P>Thanks!</P></BODY></HTML> Tue, 23 Dec 2014 01:57:39 GMT AMF 2014-12-23T01:57:39Z odds ratio estimates for interaction terms with GLIMMIX https://communities.sas.com/t5/Statistical-Procedures/odds-ratio-estimates-for-interaction-terms-with-GLIMMIX/m-p/160567#M8350 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I was wondering how to obtain OR estimates and confidence intervals for a fixed effects model I am fitting with GLIMMIX (GLM with logit link)- so basically a logistic regression.</P><P>I am able to obtain predicted probabilities at each level of the interaction with the lsmeans statement:</P><P>lsmeans var_a*var_b/ilink cl, and realize that I can probably exponentiate the parameter estimates for each interaction term to obtain odds ratios (provided I've set my referent group for both var a and var b), but the confidence intervals are tricky. Can I use a command or option in the lsmeans statement to automate this and make it easier?</P><P>Thanks!</P></BODY></HTML> Tue, 23 Dec 2014 01:57:39 GMT https://communities.sas.com/t5/Statistical-Procedures/odds-ratio-estimates-for-interaction-terms-with-GLIMMIX/m-p/160567#M8350 AMF 2014-12-23T01:57:39Z Re: odds ratio estimates for interaction terms with GLIMMIX https://communities.sas.com/t5/Statistical-Procedures/odds-ratio-estimates-for-interaction-terms-with-GLIMMIX/m-p/160568#M8351 <HTML><HEAD></HEAD><BODY><P>The LSMEANS options DIFF, OR and CL will give you the odds ratios with confidence limits.&nbsp; It is harder for interactions, but I suppose that by using the SLICEDIFF option you can narrow this to the odds ratios of interest.</P><P></P><P>Steve Denham</P></BODY></HTML> Tue, 30 Dec 2014 14:41:53 GMT https://communities.sas.com/t5/Statistical-Procedures/odds-ratio-estimates-for-interaction-terms-with-GLIMMIX/m-p/160568#M8351 SteveDenham 2014-12-30T14:41:53Z