Timeline for Why do fixed effects in a logistic regression model differ depending on the presence of a random intercept?
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
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| Mar 24 at 1:45 | vote | accept | Jeff | ||
| Mar 23 at 23:59 | history | edited | Jeff | CC BY-SA 4.0 |
original question was poorly phrased
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| May 30, 2022 at 19:42 | history | edited | Jeff | CC BY-SA 4.0 |
said slope, meant intercept
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| S May 26, 2022 at 1:05 | history | bounty ended | CommunityBot | ||
| S May 26, 2022 at 1:05 | history | notice removed | CommunityBot | ||
| May 22, 2022 at 3:01 | history | tweeted | twitter.com/StackStats/status/1528209322165035008 | ||
| May 22, 2022 at 1:06 | answer | added | Sextus Empiricus | timeline score: 6 | |
| May 22, 2022 at 0:47 | comment | added | usεr11852 |
Just to state the obvious: The sum is practically $0$. I just ran 200 simulations with the proposed design for the GLMM and I got an $N(-0.000155, 0.001411)$. Sure, it is not as consistently close to zero as the one for the LMM but I wouldn't lose sleep about it... Also while the text of the question refers to two logistic models, the R code refers to a LMM vs a GLMM... Also because in the text you mention fixed-effects: Removing the intercept makes the glm and the glmer estimates of x much more similar (assuming the glm has a as.factor(group) covariate too).
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| May 21, 2022 at 22:50 | comment | added | Jeff | @EdM it is true for any simple linear/logistic models with one random slope. i have added an example. | |
| May 21, 2022 at 22:49 | history | edited | Jeff | CC BY-SA 4.0 |
added example
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| May 18, 2022 at 12:51 | comment | added | EdM |
It will be hard to answer this question without seeing more details of the two models. Please edit the question to show the function calls and model summaries, via the code {} tool on the editing toolbar. It would be even better if you could provide a reproducible example for others to play with.
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| S May 17, 2022 at 23:25 | history | bounty started | Jeff | ||
| S May 17, 2022 at 23:25 | history | notice added | Jeff | Draw attention | |
| May 4, 2022 at 14:27 | history | asked | Jeff | CC BY-SA 4.0 |