Table 2 Summary of in-hospital mortality and medical resource utilisation by triage level and their predictability (AUROC) by current triage system across age groups. The TTAS was the triage system current in used which frailty assessment was not incorporated
Total | Age group | ||||
|---|---|---|---|---|---|
18–39 | 40–64 | 65–84 | ≥85 | ||
In-hospital mortality rate by TTAS level, n/N1 (%) | |||||
1 | 2769/12,445 (22.3) | 169/2670 (6.33) | 942/3477 (27.1) | 1106/4465 (24.8) | 552/1833 (30.1) |
2 | 2803/46,751 (6) | 103/7803 (1.32) | 997/17,526 (5.69) | 1164/15,982 (7.28) | 539/5440 (9.91) |
3 | 1222/175,678 (0.7) | 68/56,545 (0.12) | 479/72,567 (0.66) | 549/38,672 (1.42) | 126/7894 (1.60) |
4 | 24/24,315 (0.1) | 3/10,712 (0.03) | 7/9085 (0.08) | 11/3848 (0.29) | 3/670 (0.45) |
5 | 1/1552 (0.06) | 0/636 (0) | 1/637 (0.16) | 0/247 (0) | 0/32 (0) |
AUROC (95% CI) | 0.838 (0.833–0.843) | 0.862 (0.841–0.883) | 0.840 (0.832–0.848) | 0.792 (0.784–0.801) | 0.794 (0.783–0.806) |
Medical resource utilisationa by TTAS level, mean (SD) | |||||
1 | 15.1 (19.36) | 8.34 (17.39) | 18.1 (23.13) | 16.74 (18.56) | 14.41 (11.86) |
2 | 12.69 (29.91) | 9.25 (59.05) | 13.68 (20.43) | 13.26 (18.41) | 12.78 (16.49) |
3 | 4.94 (7.26) | 3.81 (5.4) | 5.04 (7.64) | 6.19 (8.47) | 6.45 (7.91) |
4 | 3.52 (9.88) | 2.00 (2.73) | 3.67 (10.19) | 6.99 (17.25) | 5.16 (12.96) |
5 | 2.29 (13.74) | 1.85 (2.71) | 1.89 (4.66) | 4.57 (34.04) | 2.28 (3.57) |
AUROCb (95% CI) | 0.715 (0.712–0.718) | 0.661 (0.656–0.667) | 0.706 (0.702–0.710) | 0.714 (0.709–0.719) | 0.738 (0.728–0.748) |