Search found 457 matches

by mcfanda@gmail.com
Wed Mar 27, 2024 11:29 am
Forum: Help
Topic: Multilevel modelling: center leve 2 predictors
Replies: 1
Views: 23

Re: Multilevel modelling: center leve 2 predictors

That would be a very strange default setting. By default all continuous variables are grand mean centered. You can choose "centered clusterwise" in the "covariates scaling" panel if you want to center level 1 predictors at group means.
by mcfanda@gmail.com
Tue Mar 26, 2024 11:15 am
Forum: Statistics
Topic: Gamma Mixed Model, Posthoc Odds Ratio
Replies: 1
Views: 80

Re: Gamma Mixed Model, Posthoc Odds Ratio

Hi GAMLj3 implements posthoc tests for beta models (following R emmeans package) testing differences in probabilities (o proportions). So, the posthoc values are basically marginal effects for categorical independent factors. As such, the exp(b) would not make much sense. However, you can always get...
by mcfanda@gmail.com
Sun Mar 24, 2024 11:06 pm
Forum: Help
Topic: GAMLj3 error in Linear Mixed Model (cholmod_factor_IdetA..)
Replies: 6
Views: 198

Re: GAMLj3 error in Linear Mixed Model (cholmod_factor_IdetA..)

We are investigating this. Thanks for sharing
by mcfanda@gmail.com
Sun Mar 24, 2024 10:28 am
Forum: General
Topic: Linear Regression Calculation differences
Replies: 2
Views: 77

Re: Linear Regression Calculation differences

General Linear Model by default centers the covariates to their mean, whereas Linear Regression does not. So, when your variables are entered as covariates and there is an interaction in the model, the first order effects are different. If you center your variables or in GLM set the scale to "n...
by mcfanda@gmail.com
Fri Mar 22, 2024 9:36 am
Forum: Help
Topic: GAMLj3 error in Linear Mixed Model (cholmod_factor_IdetA..)
Replies: 6
Views: 198

Re: GAMLj3 error in Linear Mixed Model (cholmod_factor_IdetA..)

Could you tell us the jamovi version and the version of GAMLj you work with?
by mcfanda@gmail.com
Sat Mar 16, 2024 4:20 pm
Forum: Statistics
Topic: Graphing Johnson-Neyman plots in Jamovi
Replies: 2
Views: 125

Re: Graphing Johnson-Neyman plots in Jamovi

If you are interested, Jn plot will be in gamlj3 in next version
by mcfanda@gmail.com
Tue Mar 05, 2024 6:47 am
Forum: Statistics
Topic: Structuring Data for Binomial Logistic Regression with Two-Level Questions
Replies: 3
Views: 542

Re: Structuring Data for Binomial Logistic Regression with Two-Level Questions

mcfanda@gmail.com wrote: Tue Feb 27, 2024 8:29 pm If you have repeated measure, you need a logistic mixed model, under generalized mixed models
by mcfanda@gmail.com
Tue Feb 27, 2024 8:29 pm
Forum: Statistics
Topic: Structuring Data for Binomial Logistic Regression with Two-Level Questions
Replies: 3
Views: 542

Re: Structuring Data for Binomial Logistic Regression with Two-Level Questions

If you have repeated measure, you need a logistic mixed model, underground generalized mixed models
by mcfanda@gmail.com
Tue Feb 13, 2024 9:52 pm
Forum: Statistics
Topic: How to test for support for random slopes using both frequentist methods and Bayesian methods
Replies: 1
Views: 816

Re: How to test for support for random slopes using both frequentist methods and Bayesian methods

In gamlj you have the LR test for random slopes variances. We do not have bayesian lmm yet, but I do not expect results to be very different between maximum likelihood (what people would call frequentist) and average likelihood (what people call bayesian)