| | Variables | Critical illness | No critical illness |
| | Age (years), median (IQR) | 70 (57–79) | 51 (34–66) | | Gender | | | | Female | 141,957 (41.10) | 3,048,163 (54.08) | | Male | 203,444 (58.90) | 2,588,161 (45.92) | | Mode of arrival | | | | Public/air-ambulance | 129,754 (37.57) | 951,941 (16.89) | | Private ambulance | 100,543 (29.11) | 229,180 (4.07) | | Police/public officer car/other transportation/walking | 114,030 (33.01) | 4,445,218 (78.87) | | Others | 1,061 (0.31) | 9,741 (0.17) | | Unknown | 13 (0.00) | 244 (0.00) | | ED visit date | | | | On weekday | 255,705 (74.03) | 3,703,819 (65.71) | | On weekend | 89,696 (25.97) | 1,932,505 (34.29) | | ED visit time | | | | Night (0–8 hr) | 52,871 (15.31) | 1,225,776 (21.75) | | Day (8−16 hr) | 168,215 (48.70) | 2,112,811 (37.49) | | Evening (16−24 hr) | 124,315 (35.99) | 2,297,737 (40.77) | | Symptom onset to ED arrival time (min), median (IQR) | 347 (80−1,746) | 494 (120−2,105) | | Mental status (AVPU) | | | | Alert | 258,331 (74.79) | 5,508,812 (97.74) | | Verbal response | 38,168 (11.05) | 80,213 (1.42) | | Painful response | 38,694 (11.20) | 43,376 (0.77) | | Unresponsive | 10,208 (2.96) | 3,923 (0.07) | | Vital signs | | | | Body temperature (°C), median (IQR) | 36.6 (26.2–37.0) | 36.6 (36.4–37.1) | | Heart rate (bpm per min), median (IQR) | 90 (76–108) | 82 (74–95) | | Respiratory rate (per min), median (IQR) | 20 (18–22) | 20 (18–20) | | Systolic blood pressure (mmHg), median (IQR) | 128 (102–150) | 130 (116–147) | | Diastolic blood pressure (mmHg), median (IQR) | 76 (60–90) | 80 (70–90) | | KTAS level | | | | Level 1 (resuscitation) | 33,301 (9.64) | 21,562 (0.38) | | Level 2 (emergent) | 140,934 (40.80) | 385,822 (6.85) | | Level 3 (urgent) | 150,884 (43.68) | 2,543,145 (45.12) | | Level 4 (less urgent) | 17,009 (4.92) | 2,126,146 (37.72) | | Level 5 (nonurgent) | 3,273 (0.95) | 559,649 (9.93) | | Number of diagnostic codes, median (IQR) | 4 (3–7) | 1 (1–2) | | Total | 345,401 (5.77) | 5,636,324 (94.23) |
|
|
