Differences between confint, umxCIand umxConfint?

tbates / umx

Making Structural Equation Modeling (SEM) in R quick & powerful

https://tbates.github.io/

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Differences between confint, umxCIand umxConfint? #152

Closed lf-araujo closed 3 years ago

lf-araujo commented 3 years ago

Dear Tim,

Thanks for the package!

I am having difficulties understanding which confidence interval to report in my analyses. Currently working on an ACE,

What are the differences between confint(), umxCI() and umxConfint()?

Thank you.

tbates commented 3 years ago

thanks!

confint gives SE-based confidence intervals (WALD type CIs).

umxCI() gives likelihood-based CIs, which are superior, but usually similar to the SE-based CIs. They can be asymmetric, as the umxCI actually explores how parameter changes drop the model fit. This can also make them time consuming to compute.

umxConfint I think you can ignore - it's an solution from early in umx's development which I haven't yet rolled into umxCI and deprecated.

usability suggestions welcome t

lf-araujo commented 3 years ago

Thanks Tim for this, I think in terms of usability there is nothing I would change.