Calculating confidence intervals around lme.dscore Cohen's D for mixed effect models in nlme

Question

I have a mixed effects model that I have calculated effect size using the package EMA tools and lme.dscore. However this only returns a single value of d and I would like the upper and lower CI as well. Is there a way to calculate this?

Thank you

library(EMAtools)
lme.dscore(bm.lme1,data=matched.cases3, type="nlme")

Answer 1

Given that Cohen's D is calculated as (2 * t-value)/sqrt(df)

And t-values are calculated as β/SE(β)

You can use confint(bm.lme1,method="Wald") to get confidence intervals for β, and from that calculate confidence intervals for Cohen's D.