Mediation analyses for the relationships of age group on the strength of functional network connectivity between independent components via global brain volume.

Notes: c = total effect of age group on outcome measure of functional network connectivity; a = effect of age group on normalized whole brain volume mediator; b = relationship between normalized whole brain volume mediator and outcome measure of functional network connectivity; c′ = direct effect of age group on outcome measure of functional network connectivity; CI = 95% bootstrap confidence interval for the indirect effect (10,000 stratified resamples);*p