Characteristics of practices at trial outset.
| Study group | |||
|---|---|---|---|
| Characteristics | Control (n = 19) | Audit only (n = 16) | Audit plus risk (n = 17) |
| Number of GPs — range (mean) | 1–11 (3) | 1–6 (4) | 1–6 (3) |
| List size — range (mean) | 744–17647 (4538) | 916–11033 (5173) | 1851–8963 (5034) |
| Low deprivation (0%) | 4 (21%) | 4 (25%) | 4 (23%) |
| Medium deprivation (5–15%) | 8 (42%) | 8 (50%) | 11 (65%) |
| High deprivation (≥20%) | 7 (37%) | 4 (25%) | 2 (12%) |
| (n = 18) a | (n = 14) a | (n = 16) a | |
| Training practice (%) | 9 (50) | 4 (29) | 4 (25) |
| Practice nurse (%) | 16 (89) | 12 (86) | 15 (94) |
| Hypertension register (%) | 16 (89) | 8 (57) | 12 (75) |
| Hypertension clinic (%) | 8 (44) | 4 (29) | 4 (25) |
| Recall system (%) | 14 (78) | 9 (64) | 10 (63) |
↵a Values relate to practices which returned a pre-data collection structure questionnaire.