Table 1.
Baseline characteristics of patients according to hospital admission status.
| Characteristic |
Admission | P value | |||||
| No (n=2446) | Yes (n=2699) | ||||||
| Age (years), mean (SD) | 63.0 (23.7) | 73.4 (16.2) | <.001 | ||||
| Male sex, n (%) | 1308 (53.5) | 1591 (58.9) | .25 | ||||
| Selected chief complaint, n (%)a | |||||||
|
|
Altered mental status | 220 (9.0) | 373 (13.8) | <.001 | |||
|
|
Dyspnea | 176 (7.2) | 403 (14.9) | .75 | |||
|
|
Chest pain | 188 (7.7) | 200 (7.4) | .54 | |||
|
|
Abdominal pain | 169 (6.9) | 174 (6.4) | <.001 | |||
|
|
Fever | 97 (4.0) | 175 (6.5) | <.001 | |||
| Vital signs | |||||||
|
|
Level of consciousness, n (%) | ||||||
|
|
|
|
Alert | 1619 (66.2) | 1338 (49.6) | <.001 | |
|
|
|
|
Possible eye opening, not lucid | 427 (17.5) | 642 (23.8) | <.001 | |
|
|
|
|
Possible eye opening upon stimulation | 85 (3.5) | 228 (8.4) | <.001 | |
|
|
|
|
No eye opening and coma | 36 (1.5) | 218 (8.1) | <.001 | |
|
|
Systolic blood pressure (mm Hg), mean (SD) | 148.0 (33.2) | 140.7 (43.8) | <.001 | |||
|
|
Diastolic blood pressure (mm Hg), mean (SD) | 83.5 (21.2) | 80.8 (27.5) | <.001 | |||
|
|
Pulse rate (bpm), mean (SD) | 88.7 (21.3) | 92.7 (24.7) | <.001 | |||
|
|
Respiratory rate (bpm), mean (SD) | 21.5 (5.3) | 22.8 (6.2) | <.001 | |||
|
|
Body temperature (°C), mean (SD) | 36.8 (7.6) | 36.9 (2.7) | .76 | |||
|
|
Oxygen saturation (%), mean (SD) | 97.0 (3.1) | 93.8 (7.7) | <.001 | |||
|
|
Oxygen administration during transportation, n (%) | 287 (11.7) | 947 (35.1) | <.001 | |||
| Selected past medical history, n (%)a | |||||||
|
|
R09 | Other symptoms and signs involving the circulatory and respiratory systems | 624 (25.5) | 805 (29.8) | <.001 | ||
|
|
E11 | Type 2 diabetes mellitus | 419 (17.1) | 582 (21.6) | <.001 | ||
|
|
I63 | Cerebral infarction | 202 (8.3) | 303 (11.2) | .001 | ||
|
|
E78 | Disorders of lipoprotein metabolism and other lipidemias | 151 (6.2) | 212 (7.9) | .02 | ||
| I51 | Complications and ill-defined descriptions of heart disease | 159 (6.5) | 180 (6.7) | .85 | |||
aThe five most frequent chief complaints and past medical history items are shown.