[R] Power analysis for glm-function

2007-07-13 Thread simone
Hello everybody I have done a generalized linear model (glm-function) with a binary response variable (presence/absence) and two explanatory variables (including the interaction term (model-glm(x~factor1*factor2, family=quasibinomial)). The interaction is what we are mainly interested in

Re: [R] Power analysis for glm-function

2007-07-13 Thread Charles C. Berry
On Fri, 13 Jul 2007, simone wrote: Hello everybody I have done a generalized linear model (glm-function) with a binary response variable (presence/absence) and two explanatory variables (including the interaction term (model-glm(x~factor1*factor2, family=quasibinomial)). The interaction is

[R] Power analysis and mixed model

2007-04-04 Thread Julien
Hi Is there any way to compute power analysis for a mixed model ? Julien Julien Martin Candidat au Doctorat Laboratoire de Marco festa-Bianchet Université de Sherbrooke Sherbrooke, Québec J1K 2R1 Canada 819 821 8000 poste 62059 -- Checked by AVG Free Edition. 12:48

Re: [R] Power analysis and mixed model

2007-04-04 Thread Doran, Harold
] [mailto:[EMAIL PROTECTED] On Behalf Of Julien Sent: Wednesday, April 04, 2007 10:40 AM To: r-help@stat.math.ethz.ch Subject: [R] Power analysis and mixed model Hi Is there any way to compute power analysis for a mixed model ? Julien Julien Martin Candidat au Doctorat

Re: [R] Power analysis and mixed model

2007-04-04 Thread Jean G. Orelien
-Original Message- From: Jean G. Orelien [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 04, 2007 11:22 AM To: 'Julien' Subject: RE: [R] Power analysis and mixed model Julien, You could write your Linear Mixed Model as a General Linear Multivariate Model (GLMM) and use the power

[R] Power analysis and mixed model

2007-04-04 Thread Dave Atkins
PROTECTED] From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Julien Sent: Wednesday, April 04, 2007 10:40 AM To: r-help at stat.math.ethz.ch Subject: [R] Power analysis and mixed model Hi Is there any way to compute power analysis for a mixed model

Re: [R] Power analysis for repeated measures ANCOVA

2006-09-24 Thread Spencer Graves
I haven't seen a reply to this post, and you may have moved beyond this question by now, but I will nevertheless offer one brief question: Have you looked at 'simulate.lme'? This might simplify coding your power analysis. Hope this helps. Spencer Graves Steve Su wrote:

[R] Power analysis for repeated measures ANCOVA

2006-09-13 Thread Steve Su
Dear All, I wonder if anyone has written a code for power analysis with repeated measures ANCOVA? I am aware of the following reference: Frison L and Pocock SJ: Repeated Measures in Clinical Trials: analysis using mean summary statistics and its implications for design in Statistics in

[R] power analysis for 2-way anova interaction

2006-04-13 Thread Justin Rhodes
Dear R-help list, Does anyone have a function that I could use to determine power for testing significance of an interaction term in a 2-way ANOVA. The model I am considering has 2 levels in each factor. I would like to be able to input sample size (equal in all groups), MSE, means for the

[R] power analysis for 2-way anova interaction

2006-04-13 Thread Justin Rhodes
Dear R-help, Does anyone have a function that I could use to determine power for testing significance of an interaction term in a 2-way ANOVA. The model I am considering has 2 levels in each factor. I would like to be able to input sample size (equal in all groups), MSE, means for the 4

[R] power analysis

2004-05-26 Thread Ruben Real
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