Dear Fellows, How can I do to proced a step wise regression in R, if it´s possible ? Thanks, Walmir __________________________________________________________________________ Acabe com aquelas janelinhas que pulam na sua tela. AntiPop-up UOL - É grátis! http://antipopup.uol.com.br/
Step wise regression
3 messages · walmir-rodrigues, Renaud Lancelot, Frank E Harrell Jr
Frank E Harrell Jr a ?crit :
walmir-rodrigues wrote:
Dear Fellows, How can I do to proced a step wise regression in R, if it?s possible ? Thanks, Walmir
Here is an easy approach that will yield results only slightly less valid than one actually using the response variable: x <- data.frame(x1,x2,x3,x4,..., other potential predictors) x[,sample(ncol(x))] :-) -Frank
competing for the "fortune" award ?... ;-) Renaud
Dr Renaud Lancelot, v?t?rinaire
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walmir-rodrigues wrote:
Dear Fellows, How can I do to proced a step wise regression in R, if it?s possible ? Thanks, Walmir
Here is an easy approach that will yield results only slightly less valid than one actually using the response variable: x <- data.frame(x1,x2,x3,x4,..., other potential predictors) x[,sample(ncol(x))] :-) -Frank
Frank E Harrell Jr Professor and Chair School of Medicine
Department of Biostatistics Vanderbilt University