Table 1. Characteristics of responding GPs (n = 310) compared with all Danish GPs

	Population of Danish GPs		Sample of GPs		Responding GPs
	n	%	n	%	n	%
Sex
Male	1499	43	340	43	144	46
Female	1974	57	458	57	166	54
Geographic region
The Capital Region of Denmark	1064	31	248	31	88	28
The Central Denmark Region	441	13	87	11	41	13
The North Denmark Region	819	24	200	25	79	25
Region Zealand	851	25	197	25	78	25
Region of Southern Denmark	298	9	66	8	24	8
Age, years
30–40	320	9	81	10	30	10
41–50	1421	41	316	40	119	38
51–60	989	28	229	29	95	31
61–70	660	19	154	19	61	20
>70	83	2	18	2	5	2