https://communities.sas.com/t5/SAS-Programming/In-Proc-Logistic-with-interaction-is-OddsRatiosWald-from/m-p/648977#M194506 <P>Hi all. Can anyone tell me a bit more about Proc Logistic's ODS output OddsRatiosWald that can be generated when there is an interaction term in the model? Are these estimates calculated from the interaction terms or does the procedure stratify the data to come up with these? I haven't been able to find much online about this specific output. Thanks!</P><P>&nbsp;</P><P>The output generically looks like this:</P><TABLE><TBODY><TR><TD>Odds Ratio Estimates and Wald Confidence Intervals</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD></TR><TR><TD>Odds Ratio</TD><TD>Estimate</TD><TD>95% Confidence Limits</TD><TD>&nbsp;</TD></TR><TR><TD>ExposureVar Yes vs No at InteractionVar=No</TD><TD>1</TD><TD>2</TD><TD>3</TD></TR><TR><TD>ExposureVar Yes vs No at InteractionVar=Yes</TD><TD>4</TD><TD>5</TD><TD>6</TD></TR></TBODY></TABLE> Tue, 19 May 2020 18:57:22 GMT kpberger 2020-05-19T18:57:22Z https://communities.sas.com/t5/SAS-Programming/In-Proc-Logistic-with-interaction-is-OddsRatiosWald-from/m-p/648977#M194506 <P>Hi all. Can anyone tell me a bit more about Proc Logistic's ODS output OddsRatiosWald that can be generated when there is an interaction term in the model? Are these estimates calculated from the interaction terms or does the procedure stratify the data to come up with these? I haven't been able to find much online about this specific output. Thanks!</P><P>&nbsp;</P><P>The output generically looks like this:</P><TABLE><TBODY><TR><TD>Odds Ratio Estimates and Wald Confidence Intervals</TD><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD></TR><TR><TD>Odds Ratio</TD><TD>Estimate</TD><TD>95% Confidence Limits</TD><TD>&nbsp;</TD></TR><TR><TD>ExposureVar Yes vs No at InteractionVar=No</TD><TD>1</TD><TD>2</TD><TD>3</TD></TR><TR><TD>ExposureVar Yes vs No at InteractionVar=Yes</TD><TD>4</TD><TD>5</TD><TD>6</TD></TR></TBODY></TABLE> Tue, 19 May 2020 18:57:22 GMT https://communities.sas.com/t5/SAS-Programming/In-Proc-Logistic-with-interaction-is-OddsRatiosWald-from/m-p/648977#M194506 kpberger 2020-05-19T18:57:22Z https://communities.sas.com/t5/SAS-Programming/In-Proc-Logistic-with-interaction-is-OddsRatiosWald-from/m-p/648984#M194508 Pretty sure it's the interaction term. You should be able to manually verify it from the parameter estimates for one if you wanted to. I'm fairly certain I've done this in the past and it aligns, just make sure to account for the param option used. Tue, 19 May 2020 19:08:17 GMT https://communities.sas.com/t5/SAS-Programming/In-Proc-Logistic-with-interaction-is-OddsRatiosWald-from/m-p/648984#M194508 Reeza 2020-05-19T19:08:17Z