https://communities.sas.com/t5/Microsoft-Integration-with-SAS/SAS-Macro-for-All-Possible-Regressions-style-of-Variable/m-p/67425#M917 Hello all,<BR /> <BR /> I am working on a sas macro to perform an all possible regressions<BR /> variable selection process for a binary logit model with a single<BR /> random effect (using the GEE methodology and GENMOD).<BR /> <BR /> I am currently using PROC SUMMARY with the CHARTYPE option in order to<BR /> generate all possible combinations of the potential predictors.<BR /> HOWEVER, this only provides all possible main effects models. Any ideas on how I can obtain all possible models INCLUDING higher-order interaction terms (Really: all possible hierarchical models: I want to automatically weed out models that possess higher order interactions without the lower order constituent terms)? Mon, 31 Jan 2011 22:15:11 GMT Dan99 2011-01-31T22:15:11Z https://communities.sas.com/t5/Microsoft-Integration-with-SAS/SAS-Macro-for-All-Possible-Regressions-style-of-Variable/m-p/67425#M917 Hello all,<BR /> <BR /> I am working on a sas macro to perform an all possible regressions<BR /> variable selection process for a binary logit model with a single<BR /> random effect (using the GEE methodology and GENMOD).<BR /> <BR /> I am currently using PROC SUMMARY with the CHARTYPE option in order to<BR /> generate all possible combinations of the potential predictors.<BR /> HOWEVER, this only provides all possible main effects models. Any ideas on how I can obtain all possible models INCLUDING higher-order interaction terms (Really: all possible hierarchical models: I want to automatically weed out models that possess higher order interactions without the lower order constituent terms)? Mon, 31 Jan 2011 22:15:11 GMT https://communities.sas.com/t5/Microsoft-Integration-with-SAS/SAS-Macro-for-All-Possible-Regressions-style-of-Variable/m-p/67425#M917 Dan99 2011-01-31T22:15:11Z https://communities.sas.com/t5/Microsoft-Integration-with-SAS/SAS-Macro-for-All-Possible-Regressions-style-of-Variable/m-p/67426#M918 Not sure if this is the right forum for this question...<BR /> <BR /> Barry Mon, 31 Jan 2011 22:47:42 GMT https://communities.sas.com/t5/Microsoft-Integration-with-SAS/SAS-Macro-for-All-Possible-Regressions-style-of-Variable/m-p/67426#M918 twocanbazza 2011-01-31T22:47:42Z