Table 1

Characteristics of the 199 study practices.

	n	%	Median testing rate (IQR) per 1000 patients over 2 years
Total registered population	1 232 659	–

Deprivation (Townsend fifths)
1 (most affluent)	39	19.6	1.60 (0.55–4.51)
2	39	19.6	2.31 (1.10–5.93)
3	42	21.1	1.23 (0.67–2.49)
4	39	19.6	3.80 (1.80–7.12)
5 (most deprived)	40	20.1	3.65 (1.24–7.91)

Rurality of practice
Rural	25	12.6	1.60 (0.48 to 3.98)
Urban	174	87.4	2.50 (0.92 to 5.96)

Single-handed practice
No	157	78.9	1.89 (0.81 to 4.16)
Yes	42	21.1	6.77 (1.99 to 12.23)

Practice with 50% female GPs or more
<50	135	67.8	2.30 (0.80 to 4.88)
≥50	64	32.2	3.38 (0.96 to 6.31)

Mean age of GPs in practice
≤45 years	99	49.7	1.73 (0.84 to 4.51)
≥45 years	100	50.3	3.25 (0.89 to 7.48)

GP training practice
No	164	82.4	2.52 (0.89 to 5.70)
Yes	34	17.1	1.75 (0.72 to 3.98)
Median HCV testing rate (IQR) per 1000 population over 2 years			2.44 (0.84 to 5.43)

Median HCV positivity rate (IQR) per 100 patients tested			0.00 (0.00 to 4.76)