Table 1.

Study population^a.

	Respondents		Non-respondents
	N	%	N	%
Gender
Female	772	48.9	803	43.2
Male	808	51.1	1,057	56.8
Age
<45	350	22.2	380	20.4
45–54	483	30.6	517	27.8
55–64	622	39.4	737	39.6
≥65	125	7.9	225	12.1
Practice form
Single-handed	462	29.2	621	33.4
Partnership	1,118	70.8	1,239	66.6

^aBased on the Organisation of General Practitioners’ registers. Note that collaborative practice is not included as it is a self-reported variable and therefore only available in the survey data.