Table 1. Demographic and clinical features of patients with bipolar disorder compared with healthy controls.

	Male patients n=30	Male controls n=23	Female patients n=19	Female controls n=14
Demographic and clinical featuresa	Mean (s.d.)
Age, years	47 (10.0)	42 (15.4)	47 (9.1)	48 (10.7)
HDRS	18 (4.6)	0.1 (0.3)	21 (4.6)	0.1 (0.4)
MADRS	26 (8.7)	0.5 (0.9)	28 (8.5)	0.4 (0.7)
BDI	27 (10.5)	0.9 (1.5)	30 (11.3)	0.9 (1.2)
Testosterone level, nmol/L	11.3 (3.8)	15.5 (4.2)	1.4 (0.4)	1.2 (0.2)

BDI, Beck Depression Inventory; HDRS, Hamilton Rating Scale for Depression; MADRS, Montgomery and Åsberg Depression Rating Scale.

a. Missing mood measure data on n=2 male patients and n=3 female patients; n=2–7 male controls and n=3–7 female controls.