topic Re: Testing all pairwise contrast for a categorial variable in PROC SURVEYLOGISTIC in SAS Programming

Testing all pairwise contrast for a categorial variable in PROC SURVEYLOGISTIC

Emma_at_SAS — Fri, 21 Jan 2022 18:08:42 GMT

Hello, I have a logistic regression model with a binary outcome and for two of my categorical variables, I want to estimate contrasts for each pair of the levels (within each variable-one variable has three levels, the other variable has 4 levels). How may I do that without using LSMESTIMATE? Thanks!

Re: Testing all pairwise contrast for a categorial variable in PROC SURVEYLOGISTIC

PaigeMiller — Fri, 21 Jan 2022 18:16:20 GMT

Use the LSMEANS command in PROC SURVEYLOGISTIC, with the LINES and LINESTABLE options.

Re: Testing all pairwise contrast for a categorial variable in PROC SURVEYLOGISTIC

Emma_at_SAS — Fri, 21 Jan 2022 18:17:57 GMT

Thank you @PaigeMiller May you please give me an example or document that I can learn how to do this? Thanks1

Re: Testing all pairwise contrast for a categorial variable in PROC SURVEYLOGISTIC

PaigeMiller — Fri, 21 Jan 2022 20:15:46 GMT

You would be helping yourself in the long run by learning to find and use the actual SAS documentation for PROC SURVEYLOGISTIC and look at the LSMEANS commend.

In general, you can do an internet search via typing the following command

proc surveylogistic site:documentation.sas.com

Another helpful link is this one, which shows all SAS PROCs in alphabetical order

http://documentation.sas.com/?cdcId=pgmmvacdc&cdcVersion=9.4&docsetId=allprodsproc&docsetTarget=procedures.htm&locale=en

Re: Testing all pairwise contrast for a categorial variable in PROC SURVEYLOGISTIC

Emma_at_SAS — Sat, 22 Jan 2022 13:36:05 GMT

Thank you @PaigeMiller . Your suggestion for using LSMEANS worked very well