Table 1.

General Depression Models.

	Bech Melancholia Subscale (Ham-D6)	Maier and Phillip Severity Subscale	Bagby et al.a	Gibbons Global Depression Severity Scale
Depressed mood	x	x	x	x
Retardation	x	x
Loss of interests	x	x		x
Guilt	x	x	x	x
Suicide			x	x
Anxiety, psychic	x	x	x	x
Agitation		x		x
Loss of libido				x
Anxiety, somatic				x
Somatic, general	x

^aBagby et al.² suggested 2 overlapping 3-item clusters. The model included here combines these models into 4 items.