MANCOVA with age as covariate revealed a significant main effect of age [F(2, 80) = 4.74, p = 0.002] and group [F(2, 80) = 2.1, p = 0.041] for GM volumes. Significant group effects were observed for total cortical GM [F(2, 82) = 6.4, p = 0.003), fGM [F(2, 82) = 5.22, p = 0.008], pGM [F(2, 82) = 3.98, p = 0.023], and a trend for tGM [F(2, 82) = 2.80, p = 0.067]. Pairwise comparisons showed that ALC compared to LD had less total cortical GM and smaller volumes of all but the occipital lobe. PSU had less GM than LD in the temporal lobe only, and PSU had larger frontal GM volume than ALC.
