Table 1. Participant and practice characteristics

Interview number	Interviewees	Practice size (number of patients)
1	GP1	4000–8000
2	GP2, PM1	4000–8000
3	GP3, PM3	<4000
4	PM4	<4000
5	GP4, GP5, PM5, IT1	4000–8000
6	GP6, PM5	8000–12 000
7	GP7	8000–12 000
8	GP8	<4000
9	GP9, GP10, PM6	4000–8000
10	GP11	>12 000
11	GP12, PM7	4000–8000
12	GP13, PM8	4000–8000
13	GP14	>12 000
14	PM8	<4000
15	GP15, PM9	4000–8000
16	GP16	<4000
17	GP17	<4000
18	GP18, PM10	4000–8000
19	Unavailable for interview	>12 000
20	Unavailable for interview	<4000
21	Unavailable for interview	<4000
22	Unavailable for interview	<4000

IT = IT manager. PM = practice manager.