Cost-effectiveness of a stepped-care intervention to prevent major depression in patients with type 2 diabetes mellitus and/or coronary heart disease and subthreshold depression: design of a cluster-randomized controlled trial

Table 1 Overview of all measurements and instruments

	screening	baseline	3 months	6 months	9 months	12 months
Depression symptoms (PHQ-2)	x
Demographics		x
Depression symptoms (PHQ-9)		x	x	x	x	x
Clinical depression (MINI)		x		x		x
Health care costs (Tic-P)		x	x	x	x	x
Quality of life (EQ-5D)		x	x	x	x	x
Anxiety (HADS-A)		x	x	x	x	x
Personal and family history (DIS)		x
Social support		x		x		x
Existing chronic illnesses		x		x		x
Locus of control		x	x	x	x	x
Satisfaction with provided care (CSQ)						x

ISSN: 1471-244X