Table 1 Baseline characteristicsa
Characteristics | Development data (n = 8,981,181) | Test data (n = 2604) | p-valueb |
|---|---|---|---|
Data | |||
Data type | National Emergency Department Infromation System (NEDIS) | Emergency Medical Service (EMS) Run Sheets | |
Data source | Emergency department visit data | EMS run sheets | |
Data period | 1 January 2014–30 June 2016 | 1 September 2018–28 February 2019 | |
Age | 49.9 ± 18.9 | 61.5 ± 18.6 | < 0.001 |
Female, No.(%) | 4,511,654 (50.2%) | 1411 (54.2%) | < 0.001 |
Initial vital signs, mean ± SD | |||
Systolic BP (mmHg) | 131.2 ± 23.3 | 132.0 ± 24.6 | 0.271 |
Diastolic BP (mmHg) | 79.3 ± 13.9 | 83.7 ± 17.4 | < 0.001 |
Heart rate (/min) | 83.8 ± 16.2 | 85.5 ± 20.5 | < 0.001 |
Respiratory rate (/min) | 19.6 ± 2.7 | 17.7 ± 3.3 | < 0.001 |
Body temperature (°C) | 36.7 ± 0.7 | 36.7 ± 0.8 | < 0.001 |
Mental status, No.(%) | < 0.001 | ||
Alert | 8,674,058 (96.6%) | 2513 (96.5%) | |
Reacting to voice | 161,624 (1.8%) | 20 (0.8%) | |
Reacting to pain | 113,192 (1.3%) | 46 (1.8%) | |
Unresponsive | 32,310 (0.3%) | 25 (1.0%) | |
Trauma, No.(%) | 2,536,815 (28.2%) | 550 (21.1%) | < 0.001 |
Symptome onset to visit (contact) time, No.(%) | < 0.001 | ||
–24 h | 5,394,527 (60.1%) | 2105 (80.8%) | |
24 h–72 h | 2,666,179 (29.7%) | 448 (17.2%) | |
72 h–7 Days | 536,525 (6.0%) | 38 (1.5%) | |
7 Days–30 Days | 258,641 (2.9%) | 12 (0.5%) | |
30 Days– | 125,312 (1.4%) | 1 (0.0%) | |
Outcomes, No.(%) | |||
Critical care | 511,342 (5.7%) | 319 (12.3%) | 0.006 |
In-hospital mortality | 125,219 (1.4%) | 30 (1.2%) | < 0.001 |
Hospitalization | 2,443,994 (27.1%) | 1003 (38.5%) | < 0.001 |