Multi-group SEM testing examined the associations across
those with and without evidence of stroke (see Supplementary
data S2 for procedure and S4 for invariance results). We found
evidence based on model fit indices for measurement invariance
across the stroke and no stroke groups for each of the latent
constructs in our models. As such, the latent constructs can be
considered to be equivalent across groups, and any differences in
structural parameter estimates are not a result of measurement
bias. No significant differences were found across the stroke and
no stroke groups in the associations between WMH and later life
cognitive abilities