Table 1. GP practice and participant characteristics.

GP practice	Patient list sizea	IMD quintileb	Interview participants
Round 1 13–27 May	Round 2 28 May–13 Jun	Round 3 15 Jun–2 Jul	Round 4 3 Jul–27 Jul
1	Medium–large	1	GP1, PM1	GP1	GP1	NM1
2	Small–medium	2	GP2, PM2	GP2	GP2	GP2
3	Medium	3	GP3, PM3	NM9	GP3	NM9
4	Medium–large	5	GP4	GP4	GP4	NM2
5	Small	1	GP5, PM4	0	GP5	NM3
6	Very large	5	GP6, PM5	GP6	GP6	GP6
7	Medium	5	GP7	GP7	GP7	GP7
8	Small–medium	5	GP8, PM6	GP8	NM4	GP8
9	Very large	5	GP9	GP9	GP9	NM5
10	Small–medium	5	GP10, PM7	GP10	GP10	GP10
11	Small	1	GP11	GP11	GP11	GP11
12	Very large	3	GP12	GP12	GP12	0
13	Small	5	GP13	GP13	GP13	GP13
14	Medium	5	GP14, PM8	GP14	GP14	NM6
15	Small	5	0	GP15	GP15	GP15
16	Small	3	0	GP16, PM9	0	GP16, PM9, NM7
17	Small–medium	3	0	GP17, PM10	GP17	GP17
18	Small	1	0	GP18, PM11	GP18	GP18
19	Small–medium	2	0	GP19	GP19	GP19
20	Medium	2	0	GP20	GP20	GP20
21	Small	1	0	GP21	GP21	NM8
Total interviews			22	23	20	22

^aSmall:<10 000 patients; small–medium: 10 000–15 000 patients; medium: 15 000–20 000 patients; medium–large: 20 000–25 000 patients; large: 25 000–30 000 patients; very large: >30 000 patients. ^bIndex of Multiple Deprivation (IMD) quintile 1 = most deprived and 5 = most affluent.

GP = general practitioner. IMD = Index of Multiple Deprivation. PM = practice manager. NM = nurse manager, advanced nurse practitioner, or senior nurse.