Table 1.

Characteristics of respondents.

		GP cooperative Heerlen (n = 50)	GP cooperative Maastricht (n = 50)
Age		48.0 ± 7.5	47.3 ± 6.6
Gender	Male	42	43
	Female	8	7
Employed	Part-time	11	16
	Fulltime	39	34
Size of practice (GPs)	Mean (range)	2.5 (1 – 6)	2.0 (1 – 7)
Participation in GP
cooperative	Fully	37	37
	Partly	13	13