Re: [R] stepwise selection for conditional logistic regression

Hi David My data set has about 20 significant variables and  step function with logistic regression is working fine( in R-commander). I tried to get conditional logistic by introducing the stratum variable and clogit. The clogit is not converging but is giving the summary of the model. When step

Re: [R] stepwise selection for conditional logistic regression

 Thanks Steve.  From: Steve Lianoglou To: David Winsemius ject.org> Sent: Friday, February 17, 2012 9:27 PM Subject: Re: [R] stepwise selection for conditional logistic regression Also, when you're doing reading through David's suggestions: On Fri, Feb

Re: [R] stepwise selection for conditional logistic regression

Thanks Weidong  for your help.I had earlier tried Step AIC also but no use. Trying other options as suggested by the R-group.    Subha [[alternative HTML version deleted]] __ R-help@r-project.org mailing list h

[R] stepwise selection for conditional logistic regression

 Hi, Is there any function available to do stepwise selection of variables in Conditional(matched) logistic regression( clogit)? step, stepwise  etc are failing in case of conditional logistic regression. Please help.  Thanks P.T. Subha [[alternative HTML version deleted]] _

[R] loglikelihood and AIC

Hi,  I tried fitting loglinear model using the glm(catspec). The data used is FHtab. . An independence model was fitted. Here summary() and fitmacro( ) give different values for AIC.   I understand that fitmacro( ) takes the likelilhood ratio L2(deviance) to calculate AIC and uses

[R] loglilelihood

Hi,  I tried fitting loglinear model using the glm(catspec). The data used is FHtab. . An independence model was fitted. Here summary() and fitmacro( ) give different values for AIC.   I understand that fitmacro( ) takes the likelilhood ratio L2(deviance) to calculate AIC and uses the formu