Variables examined
| All patients, n=5,334 | Before 25 January 2021, n=2,667 | After 25 January 2021, n=2,667 | p value | |
|---|---|---|---|---|
| Age, years (median; IQR) | 44.8 SD 19.8 (41; 28–50) | 45.6 SD 20.1 (42; 28–61) | 44.1 SD 19.5 (40; 28–58) | 0.006 |
| Heart rate, bpm (median; IQR) | 73.0 SD 19.5 (68; 60–78) | 73.5 SD 19.1 (68; 60–79) | 72.5 SD 19.9 (67; 60–77) | 0.09 |
| Oxygen saturation, % (median; IQR) | 96.4 SD 4.9 (98; 95–99) | 96.0 SD 5.7 (97; 95–99) | 96.8 SD 3.9 (98; 95–99) | <0.00001 |
| Age ≥57 years, n (%) | 1,554 (29.1) | 832 (31.2) | 722 (27.1) | 0.001 |
| Male, n (%) | 2,099 (39.4) | 1,072 (40.2) | 1,027 (38.5) | 0.22 |
| Heart rate >84 bpm, n (%) | 994 (18.6) | 523 (19.6) | 471 (17.7) | 0.07 |
| Altered mental status, n (%) | 912 (17.1) | 457 (17.1) | 455 (17.1) | 0.97 |
| Impaired mobility, n (%) | 1,069 (20.0) | 571 (21.4) | 498 (18.7) | 0.01 |
| Oxygen saturation <94%, n (%) | 643 (12.1) | 381 (14.3) | 262 (9.8) | <0.00001 |
| Triage score of zero points, n (%) | 3,876 (72.7) | 1,860 (70.5) | 1,996 (74.8) | 0.0004 |
| Patients admitted, n (%) | 646 (12.1) | 380 (14.2) | 266 (10.0) | <0.00001 |
bpm = beats per minute; IQR = inter-quartile range; SD = standard deviation.