https://communities.sas.com/t5/SAS-Procedures/Linear-regression-by-group/m-p/14987#M2549 Check the documentation for proc reg.<BR /> <BR /> There is an "option" for the proc req statement that allows you to output the parameters for model (Or is it an option for the model?)<BR /> <BR /> Anyway, you can get the resulting parameters and statistics output to a dataset which you can then process with a DATA step or with another proc.<BR /> <BR /> Dig a little.<BR /> Try a little.<BR /> and Waza! a new cake. Wed, 30 Apr 2008 20:42:56 GMT deleted_user 2008-04-30T20:42:56Z https://communities.sas.com/t5/SAS-Procedures/Linear-regression-by-group/m-p/14986#M2548 Sorry for what may be a basic question. I am doing a linear regression by groups and want to test for whether the estimated coefficients are significantly different between the groups. Is there a way to build this into the procedure or am I stuck doing it by hand? Thanks! Wed, 30 Apr 2008 20:32:17 GMT https://communities.sas.com/t5/SAS-Procedures/Linear-regression-by-group/m-p/14986#M2548 Pat 2008-04-30T20:32:17Z https://communities.sas.com/t5/SAS-Procedures/Linear-regression-by-group/m-p/14987#M2549 Check the documentation for proc reg.<BR /> <BR /> There is an "option" for the proc req statement that allows you to output the parameters for model (Or is it an option for the model?)<BR /> <BR /> Anyway, you can get the resulting parameters and statistics output to a dataset which you can then process with a DATA step or with another proc.<BR /> <BR /> Dig a little.<BR /> Try a little.<BR /> and Waza! a new cake. Wed, 30 Apr 2008 20:42:56 GMT https://communities.sas.com/t5/SAS-Procedures/Linear-regression-by-group/m-p/14987#M2549 deleted_user 2008-04-30T20:42:56Z https://communities.sas.com/t5/SAS-Procedures/Linear-regression-by-group/m-p/14988#M2550 Thanks! Wed, 30 Apr 2008 20:46:11 GMT https://communities.sas.com/t5/SAS-Procedures/Linear-regression-by-group/m-p/14988#M2550 Pat 2008-04-30T20:46:11Z