Table 1. Demographic data and HAM-D scores for MDD patients and controls.

	MDD patients		Normal controls		‡Z	p value
	Mean ± SD	N	Mean ± SD	N
Sex						0.69
Male		4		6
Female		9		7
Education level						0.22
Below junior high school		3		0
Above junior high school		10		13
Age	37.19 ± 12.62	13	38.92 ± 12.61	13	-0.51	0.61
†HAM-D-17	23.23 ± 6.10	13	0.38 ± 0.51	13	-4.41	< 0.01

†HAM-D-17:17-item Hamilton Rating Scale for Depression

‡Mann-Whitney Test was used to compare the ages and HAM-D scores in both groups

Cross table chi-square was used to compare the sex and education level