topic Re: Linear Regression in SAS in Statistical Procedures

Linear Regression in SAS

Allegra — Tue, 19 Nov 2019 02:48:55 GMT

For linear regression in SAS using proc reg, assuming I have a categorical independent variable coded "0" and "1", what level does sas automatically use as the reference? and Is there a way to specify what level to be used as a reference?

Thank you

Re: Linear Regression in SAS

PGStats — Tue, 19 Nov 2019 04:15:44 GMT

The reference level is the one coded number zero, by definition. To change the reference, exchange the codes.

For easier and more sophisticated handling of categorical effects, use a regression procedure that allows the CLASS statement, such as GLM, MIXED or GLIMMIX.

Re: Linear Regression in SAS

Allegra — Tue, 19 Nov 2019 23:54:36 GMT

Thank you so much for your response:)