Table 1. Descriptive statistical measures for BDI questionnaire score (zero, four, and eight months).

BDI: Beck Depression Inventory

	N	Minimum Value	Maximum Value	Mean Value	Std. Deviation
BDI before	148	5	35	19.51	5,920
BDI 4 months later	148	2	32	15.08	6,214
BDI 8 months later	148	1	33	11.95	6,384
Valid N (listwise)	148