| Practices returning baseline questionnaire (n = 1305) | Practices returning baseline and follow-up questionnaires (n = 955) | |
| Practice size, patients | ||
| 1–5000 | 372 (28.5%) | 269 (28.2%) |
| 5001–10 000 | 588 (45.1%) | 426 (44.6%) |
| 10 001–15 000 | 262 (20.1%) | 202 (21.2%) |
| 15 001–20 000 | 39 (3.0%) | 31 (3.2%) |
| 20 001–25 000 | 9 (0.7%) | 5 (0.5%) |
| 25 001+ | 4 (0.3%) | 4 (0.4%) |
| Location | 626 (48.0%) | 439 (46.0%) |
| Urban | ||
| Semi-rural and mixed | 414 (31.7%) | 305 (32.0%) |
| Rural | 200 (15.3%) | 160 (16.8%) |
| Training practice | 533 (40.8%) | 399 (41.8%) |
| No of registered patients | 9 830 000 | 7 390 000 |