Re: [R] Effect size in mixed models

with Kyle's approach. [Though, it would be *lovely* if there were an agreed upon method for estimating effect-sizes in mixed-effects models; in psychology, reviewers will bludgeon you for an effect-size...] cheers, Dave -- Dave Atkins, PhD Assistant Professor in Clinical Psychology Fuller Graduate School

Re: [R] lsa and Rstem?

, available = available, : no package 'Rstem' at the repositories Running platform powerpc-apple-darwin7.9.0 arch powerpc os darwin7.9.0 system powerpc, darwin7.9.0 status major2 minor2.1 year 2005 month12 day 20 svn rev 36812 language R -- Dave Atkins

[R] xyplot and for loops

I'm attempting to use xyplot() within a for() loop to plot the relationship between a DV and a series of predictor variables, split by 2 conditioning variables. However, xyplot() does not seem to be recognized within the for() loop; I don't receive any error message, but nothing is plotted and

Re: [R] xyplot and for loops

-3122 Dave Atkins [EMAIL PROTECTED] gton.edu

Follow-up Q Re: [R] displaying computation outputs inside for loops

switch to other programs and then back to R, iterations have been printed. Can anybody help me out with what's going on (and how to print iterations from within a for() loop as they occur)? Thanks, Dave Dave Atkins, PhD University of Washington Message: 28 Date: Mon, 9 Aug 2004 11:26:08 +0200 From

Re: Follow-up Q Re: [R] displaying computation outputs inside for loops

-help and FAQs had focused on for() and iteration, which didn't find the right answer. Knowing the right question to ask goes a long way...] Thanks, Dave Prof Brian Ripley wrote: On Mon, 9 Aug 2004, Dave Atkins wrote: I have a somewhat related question. A while back I was doing some simulations

[R] Re: Clinical Significance as a package

to you back-channel. cheers, Dave -- Dave Atkins, PhD Assistant Professor in Clinical Psychology Travis Research Institute Fuller Theological Seminary Email: [EMAIL PROTECTED] Message: 43 Date: Wed, 11 Feb 2004 10:15:31 +1000 From: Alistair Campbell [EMAIL PROTECTED] Subject: [R] Clinical

Re: Re: [R] 2 lme questions

. Hope that helps. Dave Dave Atkins Assistant Professor in Clinical Psychology Travis Research Institute [EMAIL PROTECTED] # Message: 1 # Date: Thu, 22 Mar 2001 14:27:18 -0500 (EST) # From: Kouros Owzar [EMAIL PROTECTED] # To: [EMAIL PROTECTED] # Subject: [Nlme-help] Useful Functions # # Dear All

[R] ltext, plotmath, and substitute

luck, and now believe I need to use substitute() (given some of the examples on the plotmath() help-page). But, I can't get the code quite right. Any suggestions appreciated. Dave Atkins [EMAIL PROTECTED] __ [EMAIL PROTECTED] mailing list https

Re: [R] lme X lmer results

Not sure whether it argues convincingly one way or the other in the present discussion. cheers, Dave -- Dave Atkins, PhD [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide

[R] neg-bin clustered analysis in R?

The authors have written R/Splus code (available from them). Although the article is focused on ZINB models with random-effects, the code will fit a NegBin with random-effects (if memory serves). Hope that helps. cheers, Dave -- Dave Atkins, PhD Assistant Professor in Clinical Psychology Fuller

[R] question on multilevel modeling

, Christine Calmes Christine A. Calmes, MA Dept of Psychology University at Buffalo: The State University of New York Park Hall 216 Buffalo, NY 14260 [EMAIL PROTECTED] (716) 645-3650 x578 -- Dave Atkins, PhD Assistant Professor in Clinical Psychology Fuller Graduate School of Psychology Email

Re: [R] Cronbach's alpha

/library/negalpha.htm Hope that helps. cheers, Dave -- Dave Atkins, PhD Assistant Professor in Clinical Psychology Fuller Graduate School of Psychology Email: [EMAIL PROTECTED] Phone: 626.584.5554 Weiwei Something is wrong. Coefficient alpha is bounded between 0 and 1, so negative values

[R] Power analysis and mixed model

of Family Psychology, 19, 98-110. However, depending on the nature of your design, it could be far easier to use Steve Raudenbush's Optimal Design software with menus and GUI, downloadable at: http://sitemaker.umich.edu/group-based/optimal_design_software cheers, Dave -- Dave Atkins, PhD [EMAIL

Re: [R] ordered logistic regression with random effects. Howto?

for both GEE and random-effects approaches, though for the ordinal mixed-effects regression, I believe she writes out the likelihood function and passes it to optim() (ie, no canned functions). Hope that helps. cheers, Dave -- Dave Atkins, PhD Assistant Professor in Clinical Psychology Fuller