Why not use AIC / BIC based model selection which in this case makes more sense than artificial P-Values, and eliminates the problems of stepwise regression. For background read Burnham and anderson - multimodel selection.
Chris. On 6 Oct 2011, at 08:14, pigpigmeow wrote: If I used mixed model ( linear + smoothing function) How can I used p-value to perform stepwise regression??? Is it similar of Pr(<|t|) of linear term and P-value of smoothing term but T value of linear and F of smoothing term? please help! -- View this message in context: http://r.789695.n4.nabble.com/About-stepwise-regression-problem-tp3870217p3877259.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.
