Table 1

Demographic and clinical characteristics of the sample

Characteristics	Group; mean (and SD)^*

	MDD patients (n = 15^†)	Healthy control subjects (n = 16)
Age, y	41.4 (9.2)	38.8 (9.1)
School education	10.0 (1.1)	10.4 (1.1)
BDI score	28.1 (10.1)	1.4 (2.1)
HAMD score	23.5 (5.1)
Age at onset, y	33.9 (10.6)
Duration of illness	7.5 (7.6)
Mean no. of past depressive episodes (and range)	1.4 (0–3)

BDI = Beck Depression Inventory; HAMD = Hamilton Depression Rating Scale; MDD = major depressive disorder; SD = standard deviation.
↵* Unless otherwise indicated.
↵† Of original 16 patients, 1 excluded owing to movement artifacts during structural magnetic resonance imaging.