Table 2.

Measurement scheme.

Variable	Instrument	baseline	3 months	12 months
Primary outcome
a. quality of care perceived by patients	CQ-Index GP care PACIC	X X	X X	X X
Secondary outcomes
b. quality of care perceived by GP	Quality Indicators			X
c. health status of the patient	SF-12	X	X	X
d. diabetes control	Hba1c (%)	X	X	X
e. health care utilization	Contacts with care providers	X	X	X
	Medication use (RAI-CHA)	X		X
Feasibility	Semi-structured interviews			X

This table provides an overview of the time schedule of all measurements and measures.

CQ-Index for GP care: Consumer Quality Index for GP care; GP: General Practitioner; HbA1c: glycated haemoglobin level; PACIC: Patient Assessment of Chronic Illness Care; RAI-CHA: Resident Assessment Instrument - Community Health Assessment; SF-12: Short-Form 12.