I hadn't seen that page Dennis, that makes the case much more succinctly than my anti stepwise ramblings!
Furthermore, "pigpigmeow" if you are using a random effects model i.e lmer - where are you getting your p-values from? And what do they mean in this context? I would strongly advise using information criteria in these scenarios. Chris P.S - Doug Bates discusses P-values in relation to mixed effect models here : https://stat.ethz.ch/pipermail/r-help/2006-May/094765.html On 6 Oct 2011, at 18:17, Dennis Murphy wrote: Hi: Please read this: http://www.stata.com/support/faqs/stat/stepwise.html Dennis On Thu, Oct 6, 2011 at 6:41 AM, pigpigmeow <gloryk...@hotmail.com> wrote: > using AIC/BIC, I'm not know too much about this. I just know using p-value to > perform stepwise regression > > if I used p-value to perform multimodel stepwise regression, is it correct > in the first message box? > > -- > View this message in context: > http://r.789695.n4.nabble.com/About-stepwise-regression-problem-tp3870217p3878297.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
