Table 2.

Follow up paired t-tests for post hoc ANCOVAs with significant group × time interaction.

Region of interest	ECT-group	TAU-responders	HC
Volume hippocampus (l)	T(19) = −3.1, p = 0.006, d = −0.70	T(19) = 1.1, p = 0.28, d = 0.25	T(19) = −1.7, p = 0.11 d = −0.38
Volume hippocampus (r)	T(19) = −6.4, p < 0.001, d = −1.4	T(19) = 0.8, p = 0.43 d = 0.18	T(19) = 0.1, p = 0.91 d = 0.026
Volume amygdala (l)	T(19) = −4.6, p < 0.001, d = −1.0	T(19) = 0.3, p = 0.80 d = 0.06	T(19)=−0.07, p = 0.94 d = −0.02
Volume amygdala (r)	T(19) = −7.3, p < 0.001, d = −1.6	T(19) = −0.0, p = 0.99 d = −0.002	T(19) = 0.3, p = 0.76 d = 0.07
CBF hippo (l)	T(19) = −2.7, p = 0.014, d = −0.60	T(19) = −1.5, p = 0.14 d = −0.35	T(19) = 1.5, p = 0.14 d = 0.34
CBF hippo (r)	T(19) = −3.4, p = 0.003, d = −0.80	T(19) = −1.0, p = 0.34 d = −0.22	T(19) = 0.9, p = 0.39 d = 0.20
Mean cortical thickness (l)	T(19) = −1.5, p = 0.148, d = −0.34	T(19) = −3.3, p = 0.004, d = −0.74	T(19) = -, p = 0.21, d = 0.29
Mean cortical thickness (r)	T(19) = −2.6, p = 0.018, d = −0.58	T(19) = −4.3, p < 0.001, d = −0.96	T(19) = -, p = 0.63, d = 0.11

ECT electroconvulsive therapy, TAU treatment as usual, HC healthy controls, CBF cerebral blood flow.

P-values marked with bold indicate statistically significant differences between groups (p < 0.05).