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I'm very sorry another email of mine got out where the formatting got screwed up. I tried several ways and sent test emails to myself first. Plain text instead of HTML looks terrible, so I made screenshots. This worked...

I have a repeated measures design with about 16 cases and 5-6 points of measuring. Sometimes, 1-4 full cases or some points of measure are missing. (The measures are 20 numerical and categorical data taken from questionnaires.) The...

Dear List, I want to do a power calculation on a mixed model as described here by Ben Bolker: https://rpubs.com/bbolker/11703 However, there are three things I can't figure out: - The qlogis function, I don't...

Dear List, dear Thierry, thank you for pointing out my formatting got screwed up and still fighting your way through! I'm resending my email below. Complete separation: Well, not quite, but I do have few cases with few cells...

Hi Josh, I see you have a discrete, ordinal outcome variable - a scale of 1-4, so 4 possible answers that are ordered. The lmer-function in lme4 actually needs a continuous outcome variable (so answers like 1.4, 3...

Dear Rune Haubo, I'm using 'ordinal' to model my data - thank you for making it possible! But I'm running into a problem and would be very grateful for any response on this. I have an ordered rating response...

Sorry I forgot to send my response below to the entire list. Glad I could help. Best -------- Weitergeleitete Nachricht -------- Betreff: Re: [R-sig-ME] Doubtful significance in mixed effect model Datum: Mon, 4 Nov 2019 00:24:33 +0100 Von...

Hi all, sorry it took me a while to respond, the holidays... Thanks very much for your help and suggestions! @Pat: Right, I get it. The data is completely observed and the missing data not structural. I mostly get what...

Dear all, I'd be very thankful for a short feedback on whether my lmer-model is good the way it is. Thank you very much in advance! I'm fitting log-10 reaction times (RT), reading times of sentences...

Dear all, I'd be very thankful for a short feedback on whether my lmer-model is good the way it is. Thank you very much in advance! I'm fitting log-10 reaction times (RT), reading times of sentences...

This may be a superficial answer given the detail of your question, but as far as I understand, centering your predictor is a linear transformation. You're simply subtracting values so the predictor is centered around a different value than...

Dear Phillip, thank you very much for your good answer - it helped me a lot. Now that I've been through it a few times, I'm still unclear about a few things: >> - The qlogis function, I don't get...

Hi Ricardo, if you have fixed and random effects, then lme4 can definitely do this analysis. But your formula would have to look quite different. I also don't get your data overview - if you have it in a table...

Dear List, I'm fitting ordinal mixed models with package {ordinal}. I have a clmm with 1 predictor (fixed effect, factor with 2 levels "woe" and "meta"), 2 random effects, and an ordinal outcome, ratings from 1-4. Items=82...