Table 1.
Baseline characteristics
| Incentive n = 1070 (%) |
No incentive n = 1074 (%) |
|
| Centre of recruitment to MINT | ||
| Hospital A | 102 (9.5) | 104 (9.7) |
| Hospital B | 51 (4.8) | 46 (4.3) |
| Hospital C | 156 (14.6) | 188 (17.5) |
| Hospital D | 42 (3.9) | 36 (3.4) |
| Hospital E | 61 (5.7) | 78 (7.3) |
| Hospital F | 54 (5.0) | 53 (4.9) |
| Hospital G | 69 (6.4) | 64 (6.0) |
| Hospital H | 98 (9.2) | 90 (8.4) |
| Hospital I | 62 (5.8) | 55 (5.1) |
| Hospital J | 21 (2.0) | 22 (2.0) |
| Hospital K | 130 (12.1) | 112 (10.4) |
| Hospital L | 53 (5.0) | 49 (4.6) |
| Hospital M | 22 (2.1) | 23 (2.1) |
| Hospital N | 80 (7.5) | 82 (7.6) |
| Hospital O | 69 (6.4) | 72 (6.7) |
| Time point of recruitment | ||
| 4 month questionnaire | 590 (55.1) | 604 (56.2) |
| 8 month questionnaire | 480 (44.9) | 470 (43.8) |
| Age, years; mean [sd] | 37.0 [13.4] | 36.8 [13.2] |
| range | 18–87 | 18–78 |
| Sex male | 448 (41.9) | 456 (42.5) |
| Female | 613 (57.3) | 606 (56.4) |
| Missing | 9 (0.7) | 12 (1.1) |
| WAD grade at ED assessment | ||
| I | 572 (53.5) | 617 (57.4) |
| II | 465 (43.5) | 429 (39.9) |
| III | 33 (3.1) | 28 (2.6) |