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Results tagged with multilevel-analysis
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user 122394
Statistical analysis of datasets comprising several levels of hierarchy (e.g., students nested in classes nested in schools or hierarchical forecasting). For questions about mixed models use [mixed-model] tag. For nested random effects, use [nested-data].
2
votes
Accepted
Multilevel model - Hessian matrix not positive definitive error, but only for certain covari...
I've done additional research and determined that I do not need to focus on selecting a covariance structure, because an unstructured covariance matrix is highly appropriate for a growth curve model / …
- 351
1
vote
1
answer
2k
views
Multilevel model - Hessian matrix not positive definitive error, but only for certain covari...
I am analyzing data using multilevel modeling / growth curve analysis. For my best fit model, using likelihood ratio tests, I have landed on a random quadratic time interaction model (see syntax below …
- 351
2
votes
1
answer
794
views
Is there a model that can handled unbalanced repeated measures data with 1 OR 2 follow ups?
I want to identify predictors of a binary healthcare outcome in a purely observational study, and some of my participants have 1 recorded outcome timepoint, while others have 2 recorded outcome timepo …
- 351