Summary of patient demographics, scores on Emergency Department Concussion Assessment Tool and management in the emergency department*
| Variable | Reattended | No reattendance | P value |
| (n=3) | (n=37) | ||
| Age, median (IQR), years | 53 | 36.00 (23.75–68.00) | 0.6812 |
| Male | 2 (66.7) | 17 (45.9) | – |
| Time between injury and assessment, median (IQR), hours | 15.83 | 15.50 (3.50–37.54) | 0.719 |
| Sports-related HIs | 0 (0.0) | 5 (13.5) | – |
| Number of previous concussions, median (IQR) | 0 | 0.00 (0.00–0.50) | 1 |
| Hospitalised for a HI in the past | 0 (0.0) | 6 (16.2) | – |
| Diagnosed or treated for headache disorder or migraines | 1 (33.3) | 10 (27.0) | – |
| Diagnosed with learning disabilities or dyslexia | 0 (0.0) | 2 (5.4) | – |
| Diagnosed with ADHD | 0 (0.0) | 0 (0.0) | – |
| Diagnosed with depression, anxiety or sleep disorder | 0 (0.0) | 8 (21.6) | – |
| Currently prescribed medication | 2 (66.7) | 22 (59.5) | – |
| Cause | |||
| Direct blow | 1 (33.3) | 17 (45.9) | – |
| Fall | 1 (33.3) | 18 (48.6) | |
| Motor vehicle collision | 1 (33.3) | 2 (5.4) | |
| Step 2 score—orientation (0–5), median (IQR) | 3 | 5.00 (4.75–5.00) | 0.0451 |
| Step 3 score—immediate memory (0–15), median (IQR) | 13 | 14.00 (13.00–15.00) | 0.365 |
| Step 4 score—number of symptoms (0–22), median (IQR) | 17 | 9.00 (4.50–16.50) | 0.142 |
| Step 4 score—symptom severity (0–132), median (IQR) | 67 | 26.00 (9.75–51.00) | 0.04 |
| Step 5 score—balance examinations (0–40), median (IQR) | 0 | 31.00 (10.00–37.50) | 0.328 |
| Step 6 score—delayed recall (0–5), median (IQR) | 2 | 3.00 (2.00–4.50) | 0.559 |
| Investigated with a CT head scan | 2 (66.7) | 16 (43.2) | – |
| Management | |||
| Discharged home same day | 3 (100) | 34 (91.9) | – |
| Discharged home next day | 0 (0) | 2 (5.4) | |
| Admitted | 0 (0) | 1 (2.7) | |
*Values shown is number (%) of participants unless stated otherwise. If a median is shown, in brackets is the IQR. No IQR could be generated for reattenders as the sample was too small. In brackets after variables that are scored are the potential scores available for that section.
ADHD, attention deficit hypersensitivity disorder; HI, head injury.