Fig. 3.

Effects of PI status on amygdala volume depend on age. (A) Fitted results of piecewise Age X Group effects on amygdala volume are depicted. Raw data (lines connecting within-subject observations) are shown with a 95 % CI band around the fitted regression lines. (B) The region of significant plot is shown, depicting the magnitude of group differences in amygdala volume (PI – COMP) across the entire age-range. When the 95 % CI band is above zero, amygdala volume is estimated to be significantly larger in PI group than the comparison group, and when the 95 % CI is below zero, this indicates the age range when amygdala volume is significantly smaller in the PI group than the comparison group. * p < 0.05.