Table 2 Basic characteristics of the benchmark dataset. Continuous variables are presented as mean (SD); binary or categorical variables are presented as count (%); more variables are described in Supplementary eTable 2.
Overall | Outcomes | ||||
|---|---|---|---|---|---|
Hospitalization outcome | Critical outcomes | 72-hour ED reattendance | |||
Discharge | Hospitalized | ||||
# Emergency visits | 441,437 | 232,461 | 208,976 | 26,174 | 15,299 |
Demographic | |||||
Age | 52.80 (20.60) | 46.29 (19.36) | 60.03 (19.50) | 65.43 (17.85) | 50.40 (18.70) |
Gender | |||||
Female | 239794 (54.3%) | 133874 (57.6%) | 105920 (50.7%) | 12168 (46.5%) | 7068 (46.2%) |
Male | 201643 (45.7%) | 98587 (42.4%) | 103056 (49.3%) | 14006 (53.5%) | 8231 (53.8%) |
Emergency Severity Index | |||||
Level 1 | 25363 (5.7%) | 5349 (2.3%) | 20014 (9.6%) | 8888 (34.0%) | 462 (3.0%) |
Level 2 | 147178 (33.3%) | 45445 (19.5%) | 101733 (48.7%) | 14099 (53.9%) | 3838 (25.1%) |
Level 3 | 237565 (53.8%) | 151843 (65.3%) | 85722 (41.0%) | 3176 (12.1%) | 9849 (64.4%) |
Level 4 | 30160 (6.8%) | 28704 (12.3%) | 1456 (0.7%) | 11 (0.0%) | 1091 (7.1%) |
Level 5 | 1171 (0.3%) | 1120 (0.5%) | 51 (0.0%) | 0 (0.0%) | 59 (0.4%) |
Chief complaints | |||||
Chest pain | 30756 (7.0%) | 13790 (5.9%) | 16966 (8.1%) | 1107 (4.2%) | 907 (5.9%) |
Abdominal pain | 50868 (11.5%) | 25801 (11.1%) | 25067 (12.0%) | 1711 (6.5%) | 1961 (12.8%) |
Headache | 16601 (3.8%) | 11967 (5.1%) | 4634 (2.2%) | 620 (2.4%) | 627 (4.1%) |
Shortness of breath | 1285 (0.3%) | 402 (0.2%) | 883 (0.4%) | 213 (0.8%) | 24 (0.2%) |
Back pain | 17625 (4.0%) | 12369 (5.3%) | 5256 (2.5%) | 282 (1.1%) | 621 (4.1%) |
Cough | 9269 (2.1%) | 5293 (2.3%) | 3976 (1.9%) | 411 (1.6%) | 244 (1.6%) |
Nausea/vomiting | 10666 (2.4%) | 5606 (2.4%) | 5060 (2.4%) | 466 (1.8%) | 401 (2.6%) |
Fever/chills | 15267 (3.5%) | 4651 (2.0%) | 10616 (5.1%) | 1427 (5.5%) | 398 (2.6%) |
Syncope | 8198 (1.9%) | 4409 (1.9%) | 3789 (1.8%) | 359 (1.4%) | 167 (1.1%) |
Dizziness | 10928 (2.5%) | 6337 (2.7%) | 4591 (2.2%) | 365 (1.4%) | 287 (1.9%) |
Information collected at triage | |||||
Temperature (Celsius) | 36.71 (0.54) | 36.68 (0.49) | 36.75 (0.59) | 36.75 (0.66) | 36.69 (0.51) |
Mean arterial pressure (mmHg) | 96.59 (14.86) | 97.55 (13.84) | 95.51 (15.86) | 92.08 (17.86) | 97.91 (14.77) |
Heart rate (bpm) | 85.05 (17.46) | 83.90 (16.32) | 86.32 (18.56) | 90.74 (20.93) | 87.07 (16.94) |
Respiratory rate (bpm) | 17.57 (2.49) | 17.30 (2.11) | 17.87 (2.83) | 18.91 (4.32) | 17.42 (2.16) |
Oxygen saturation (%) | 98.40 (2.42) | 98.80 (2.00) | 97.95 (2.75) | 97.30 (3.70) | 98.39 (2.51) |
Systolic blood pressure (mmHg) | 134.84 (22.14) | 135.14 (20.67) | 134.51 (23.67) | 129.17 (26.21) | 135.09 (21.79) |
Diastolic blood pressure (mmHg) | 77.46 (14.71) | 78.76 (13.76) | 76.01 (15.57) | 73.53 (16.46) | 79.33 (14.62) |
Pain scale | 4.15 (3.60) | 4.67 (3.58) | 3.58 (3.54) | 3.08 (3.02) | 4.74 (3.78) |
