Table 2 General characteristics of the derivation and validation sets. The values are presented as numbers (%) or medians (interquartile ranges)
Derivation set (n = 12,633,718) | Validation set (n = 4,585,966) | |
|---|---|---|
Sex | ||
Male | 6,258,347 (49.5) | 2,261,689 (49.3) |
Age (y) | ||
15–54 | 7,179,310 (56.8) | 2,466,580 (53.8) |
55–74 | 3,627,721 (28.7) | 1,376,552 (30.0) |
75–84 | 1,382,447 (10.9) | 545,000 (11.9) |
85–89 | 314,750 (2.5) | 137,749 (3.0) |
90–94 | 103,103 (0.8) | 48,026 (1.0) |
95–99 | 23,017 (0.2) | 10,738 (0.2) |
100 or above | 3,370 (0.0) | 1,321 (0.0) |
Event | ||
Disease | 9,159,256 (72.5) | 3,346,492 (73.0) |
Other | 3,474,462 (27.5) | 1,239,474 (27.0) |
Consciousness | ||
Alert | 12,208,188 (96.6) | 4,435,800 (96.7) |
Response to voice | 145,115 (1.1) | 81,215 (1.8) |
Response to pain | 55,027 (0.4) | 51,628 (1.1) |
Unresponsive | 225,388 (1.8) | 17,323 (0.4) |
Systolic blood pressure (mmHg) | 130 (118–148) | 130 (119–150) |
Heart rate (min− 1) | 82 (74–94) | 83 (74–95) |
Respiratory rate (min− 1) | 20 (18–20) | 20 (18–20) |
Body temperature (°C) | 36.6 (36.4–37.0) | 36.7 (36.4–37.0) |
Pulse oxygen saturation (%) | 98 (97–99) | 98 (97–99) |
Medical Early Warning Score | 1 (1–2) | 1 (1–2) |
Admission | 3,060,583 (24.2) | 1,107,268 (24.1) |
EDa mortality | 50,947 (0.4) | 15,245 (0.3) |
Mortality | 50,722 (0.4) | 15,268 (0.3) |