Luke Norman

3 Questions 1 Answers 0 Followers

Questions related from Luke Norman

How to interpret significant parametric coefficients group difference without difference in smooths in GAM model??

Dear experts, I am running longitudinal models using gamm4 with interest in looking at main effects of group and group by age interactions (age range 8-25 years). I am using the following...

14 February 2023 1,794 0 View

How to implement cross/nested random effects in lme4?

Hi experts, I am trying to examine "homophily" in school students. That is, I am examining whether pairwise similarity in various traits correlates with closeness in social networks. Each row...

19 June 2021 7,246 3 View

ANCOVA controlling baseline in RCT - how to perform power analysis and sample size estimation?

Hi, I have a simple question. I am hoping to perform a power analysis/sample size estimation for an RCT. We will be controlling for baseline symptoms, and using post-treatment or change scores as...

20 February 2021 2,895 23 View