topic Re: logistic regression : intercept is NOT significative in SAS Procedures

logistic regression : intercept is NOT significative

deleted_user — Sat, 28 Feb 2009 20:14:34 GMT

Hi everybody

I have performed a logistic regression using a stepwise selection. But, at the end, the parameter estimate of intercept is NOT significative (p value of about 0.90).

What should I do ?

And how ?

Thanks for the help Message was edited by: babaorumi

Re: logistic regression : intercept is NOT significative

Paige — Wed, 04 Mar 2009 20:06:20 GMT

Seriously, I wouldn't worry about it. Go ahead and use the model you came up with.

Re: logistic regression : intercept is NOT significative

Doc_Duke — Thu, 05 Mar 2009 01:16:31 GMT

The intercept can be viewed as the baseline risk if all the other effects are set to their 0 value (reference cell coding for class variables). Whether it is meaningful or not depends on the sorts of independent variables and the domain of study. (It is usually not meaningful if there are any continuous predictors.)

I rarely even look at it.

Doc Muhlbaier
Duke