Comparison of findings from a sample of prior GTT studies with escalation e-trigger
| Authors, year | Method of record selection | Total records reviewed | Total records identified as GTT-positive | Reported GTT yield (% adverse events discovered per GTT trigger positive charts) | Records identified as positive for escalation of care (manually in all except our study) | Reported yield (% adverse events discovered per ‘escalation of care’ trigger positive charts) | Distinction between preventable and non-preventable (if reported) |
| Iyengar et al, 200919 | All rapid response team consults in a 4-week period | 65 | N/A | N/A | 23 | 35% (23/65) | 69.6% preventable |
| Naessens et al, 201020 | 10 random charts every 2 weeks for 2 years | 1138 | 913 | 33.6% (307/913) | 56 | 66% (37/56) | No distinction |
| Kennerly et al, 20139 | 10–35 random charts every month for 2 years | 16 172 | 14 182 | 19.5% (2772/14 182) | Not reported | 3.9% | 12.5% preventable |
| O’Leary et al, 201310 | 250 randomly selected records | 250 | Not reported | Not reported | 18 | 13% (2/18) | No distinction |
| Unbeck et al, 201322 | 350 random orthopaedic patients | 350 | Not reported | 28% (98/350) | 5 | 80% (4/5) | 79% preventable |
| Hwang et al, 201411 | 30 random charts per week for 6 months | 629 | Not reported | Not reported | 18 | 11.1% (2/18) | 61% preventable |
| Amaral et al, 201521 | 247 rapid response team consults over a 7-month period | 247 | N/A | N/A | 247 | 17.8% (44/247) | 79.5% preventable |
| Escalation e-trigger | Electronic trigger applied to 88 428 hospitalisations | N/A | N/A | N/A | 92 high-risk records identified from 887 | 44.6% (41/92) | All preventable |
GTT, Global Trigger Tool.