search for: stdbeta

Hi, I have to analyse the number of provisioning trips to nestlings according to a number of biological and environmental factors. I was thinking of building a mixed-effects model with species and nestid as random effects, using a Poisson distribution, but the data are overdispersed (variance/mean = 5). I then thought of using a mixed-effects model with negative binomial distribution, but I have

Dear R users, Does anyone know how to get standard errors of the parameter estimates in glmm.admb? Thanks, Istvan

...ion of how to calculate fixed-effect parameter standard errors for glmm.admb-generated models, has been posed, but only partially answered, several times on the aforementioned list servs (e.g., R-help list serv: H. Skaug, 25 Feb 06). I know that, using the glmm.admb package, I could call: m$stdbeta to obtain the standard deviations of the fixed effect estimates. However, this is insufficient for calculating Wald statistics or even for generating confidence intervals, as both require standard errors, not standard deviations. Cameron and Trivedi (Regression Analysis of Count Data; 1998,...