Outcomes
| Phase I | Phase II | |
| Days in hospital (acute cases) | ||
| Mean | 8.9 | 8.1 |
| Median | 6 | 5 |
| Days in hospital (low risk: score <2) | ||
| Mean | 5.6 | 5.5 |
| Median | 4 | 4 |
| Surgical intervention for acute bleeding | 134/2332 (5.7%) | 82/1625 (5.0%) |
| Crude mortality | 13.4% (308/2301) | 14.4% (231/1615) |
| Risk standardised mortality ratio | Reference = 100 | 0.96 (0.84–1.09) |
| Surgical mortality | 35/134 (26.3%) | 17/82 (21.3%) |