Table 2.

Recoding of Measures of Current Depression Symptom Severity into a Common Metric

Severity Measure	Cut-Point Source	Scoring	Recoding
HAM-D	Kearns et al., 1982	0-7= normal	0
		8-13 = mild	1
		14-18= moderate	2
		19-22= severe	3
		≥ 23= very severe	3
MADRS	Kearns et al., 1982	0-7 = recovered	0
		8-15= mild	1
		16-25= moderate	2
		26-30= severe	3
		31≥ = very severe	3
BDI	Beck, 1978	0-9= normal	0
		10-16= mild	1
		17-29= moderate	2
		≥ 30= severe	3
BDI-II	Beck et al., 1996	0-13 = minimal	0
		14-19= mild	1
		20-28= moderate	2
		≥ 29= severe	3
K10	Andrews & Slade, 2001	10-19= well	0
		20-24= mild	1
		25-29= moderate	2
		30≥= severe	3
GDS	Yesavage et al., 1983	0-9= normal	0
		10-19= mild	1
		≥20 = severe	3
HADS	Zigmond & Snaith, 1983	0-7=normal	0
		8-10=mild	1
		11-14=moderate	2
		15-21=severe	3

Note. The HAM-D and MADRS use a fourth, very severe level not used by the other scales; thus, ratings of severe or very severe on were both coded as 3. HAM-D = Hamilton Depression Rating Scale; MADRS = Montgomery-Asberg Depression Rating Scale; BDI = Beck Depression Inventory; BDI-II = Beck Depression Inventory II; K10 = Kessler Psychological Distress Scale; GDS = Geriatric Depression Scale; HADS = Hospital Anxiety and Depression Scale.