Healthy individuals vs patients with bipolar or unipolar depression in gray matter volume

Table 1 Demographic and clinical data of the subjects

	BD (n = 13)	UD (n = 20)	Controls (n = 20)	P value
Age (yr)	31.0 ± 7.6	28.0 ± 9.1	31.7 ± 11.4	0.698
Gender (male/female)	6/7	7/13	10/10	0.616
Education (yr)	11.7 ± 4.0	10.6 ± 3.5	13.1 ± 3.9	0.083
First-episode age (yr)	22.0 ± 8.0	23.3 ± 8.4	--	0.442
Diseasecourse (mo)	108.0 ± 55.0	56.4 ± 29.4	--	0.064
HDRS score	24.8 ± 5.6	26.5 ± 7.1	--	0.572

BD: Bipolar depression; UD: Unipolar depression; HDRS: Hamilton Depression scale.