Characteristics of sample populations in phase I and II
| Phase I | Phase II | |
| Number of cases | 2332 | 1625 |
| Inpatients/transfers | 15.9% (371) | 16.4% (266) |
| Age | ||
| Mean | 66 | 66 |
| Median | 71 | 71 |
| Range | 16–103 | 17–103 |
| % >80 years | 27.2% (634) | 28.6% (464) |
| Sex (male) | 57.0% (1327) | 57.5% (934) |
| Blood pressure <100 mm Hg on admission | 11.2% (256/2293)1-150 | 11.8% (191/1613)1-150 |
| Co-morbidity at presentation | ||
| Any major co-morbidity | 59.1% (1378) | 59.4% (965) |
| Malignancy | 8.2% (191) | 8.9% (145) |
| Organ failure | 15.2% (354) | 15.9% (259) |
| Diagnosis | ||
| None made | 23.2% (542) | 23.0% (374) |
| Peptic ulcer | 36.1% (842) | 36.4% (592) |
| Upper GI malignancy | 4.0% (93) | 4.1% (67) |
| Varices | 4.6% (108) | 4.9% (80) |
| Mallory-Weiss tear | 5.1% (119) | 6.0% (98) |
| Oesophagitis | 10.3% (241) | 11.0% (179) |
| Erosive disease | 10.3% (240) | 10.9% (177) |
| Other | 6.3% (147) | 3.6% (58) |
| Blood transfusion | ||
| Mean | 2.9 units | 2.8 units |
| Median | 2.0 units | 2.0 units |
| Rebleeding | 15.4% (354/2297)1-150 | 16.2% (260/1605)1-150 |
| Risk score | ||
| 0 | 14.7% (343) | 15.7% (255) |
| 1 | 13.5% (314) | 12.6% (205) |
| 2 | 17.2% (401) | 16.2% (263) |
| 3 | 22.1% (515) | 19.5% (317) |
| 4 | 21.0% (489) | 22.6% (368) |
| 5 | 7.6% (177) | 8.7% (141) |
| 6+ | 4.0% (93) | 4.7% (76) |
↵1-150 Denominator is less than total number of cases because of missing values. GI, gastrointestinal.