Table 2.
Characteristics of the first visit and revisit of returning minor head injury patients.
| First visit | Revisit | p value | |
|---|---|---|---|
| ED length of stay (hr) | 3.9 ± 6.6 | 8.4 ± 17.3 | 0.06 |
| ED Physician seniority (yr) | 4.0 ± 2.3 | 4.2 ± 2.8 | 0.77 |
| Triage level [number (%)] | |||
| Level 1 | 0 (0) | 0 (0) | |
| Level 2 | 9 (16) | 9 (16) | |
| Level 3 | 40 (70) | 41 (72) | |
| Level 4 | 7 (12) | 4 (7) | |
| Level 5 | 1 (2) | 3 (5) | |
| Vital Signs | |||
| Body temperature (°C) | 36.5 ± 0.6 | 36.5 ± 0.6 | 0.96 |
| Pulse rate (times/min) | 94 ± 19 | 86 ± 19 | <0.001∗ |
| Respiratory rate (times/min) | 19 ± 2 | 19 ± 2 | 0.84 |
| Mean arterial pressure (mmHg) | 100 ± 37 | 92 ± 33 | 0.005∗ |
| GCS <15 [number (%)] | 3 (5) | 3 (5) | 1 |
| Symptoms [number (%)] | |||
| Vomiting | 12 (21) | 19 (34) | 0.07 |
| Subcutaneous hematoma | 5 (9) | 3 (6) | 0.16 |
| Examination [number (%)] | |||
| Blood test | 10 (18) | 14 (25) | |
| Radiography | 33 (58) | 22 (39) | |
| CT | 22 (39) | 14 (25) |
Comparisons were made using paired t-test and McNemar test for continuous and categorical variables, respectively.∗Statistically significant in comparison between groups. ED, emergency department; GCS, Glasgow Coma Scale; CT, computed tomography.