Recent papers looking into the safety of extending the GBS threshold for the discharge of patients with an acute upper gastrointestinal bleed
| Authors | Low risk score | Number of patients in study | Identified as low risk (%) | True low risk (%) | Adverse events* in low risk cohort (%) | Using score for discharge (Y/N) |
| Mustafa et al 3 | 0–1 | 514 | 35.6 | 63.0 | 1.1 | Y |
| Stanley et al 15 | 0–1 | 3012 | 19.2 | 55 | 3.4 | In 2/6 hospitals |
| Recio-Ramírez et al 6 | 0–2 | 60 | 23.3 | 53.3 | 0 | N |
| Stephens et al 7 | 0–2, age <70 years | 232 | 22.4 | 58.6 | 0 | N |
| Laursen et al 5 | 0–2 | 831 | 20.8 | 46.0 | 7.5 | N |
| Srirajaskanthan et al 8 | 0–2 | 174 | 54.0 | 66.3 | 0 | N |
*Blood transfusion, endoscopic therapy, radiological intervention, surgery or death.