Table 1 Summary of how to obtain the CI’s of the fixed effects and the variance-covariance parameters
From: A comparative study of R functions for clustered data analysis
95% confidence intervals of parameters | |||
|---|---|---|---|
β | {σ2,ρ} | {σu,σε} | |
geese | Estimate ± 1.96 standard deviation | – | |
gls | confint | intervals(,which=“var-cov”)* | – |
intervals(,which=“coef”) | |||
lme | intervals(,which=“fixed”) | – | intervals(,which=“var-cov”) |
lmer | confint(,method=“Wald”) | – | confint(,method=“profile”) |
confint(,method=“profile”) | |||