A cautionary tale on the effects of different covariance structures in linear mixed effects modeling of fMRI data
Sign Up to like & getrecommendations! Published in 2024 at "Human Brain Mapping"
DOI: 10.1002/hbm.26699
Abstract: With the steadily increasing abundance of longitudinal neuroimaging studies with large sample sizes and multiple repeated measures, questions arise regarding the appropriate modeling of variance and covariance. The current study examined the influence of standard… read more here.
Keywords: variance covariance; fmri; structures linear; covariance ... See more keywords
LiMMCov: An interactive research tool for efficiently selecting covariance structures in linear mixed models using insights from time series analysis
Sign Up to like & getrecommendations! Published in 2025 at "PLOS One"
DOI: 10.1371/journal.pone.0325834
Abstract: The correct specification of covariance structures in linear mixed models (LMMs) is critical for accurate longitudinal data analysis. These data, characterised by repeated measurements on subjects over time, demand careful handling of inherent correlations to… read more here.
Keywords: time; linear mixed; structures linear; covariance ... See more keywords