Preinjury variables for patients with mTBI split into those who had recovered by 1 year and those who reported both symptoms and disability (PCS)
| Variables | Recovered (n=83) | PCS (n=11) | OR (95% CI) | P values |
| Previous or concurrent psychological disorder, n (%) | 20 (24) | 9 (82) | 14.2 (2.8 to 71.1) | 0.001 |
| Previous psychological disorder | 16 (19) | 7 (64) | 7.3 (1.9 to 28.1) | 0.004 |
| Concurrent psychological disorder | 8 (10) | 7 (64) | 16.4 (3.9 to 68.5) | <0.001 |
| Family history of psychological disorder | 17 (20) | 4 (36) | 2.4 (0.9 to 6.3) | 0.077 |
| Self-assessed GAF, mean (SD) | ||||
| The year before the injury | 86.2 (11.5) | 67.3 (21.5) | 0.9 (0.8 to 1.0) | <0.001 |
| The 2 weeks before the injury | 87.1 (11.1) | 73.2 (20.3) | 0.9 (0.8 to 1.0) | 0.003 |
| Previous mild traumatic brain injury | 4 (5) | 2 (18) | 4.3 (0.6 to 27.1) | 0.117 |
| Alcohol consumption (AUDIT) | ||||
| Mean (SD) | 5.0 (4.2) | 5.5 (8.1) | 1.0 (0.8 to 1.2) | 0.748 |
| Eight or above, n (%) | 13 (17) | 1 (10) | 0.5 (0.0 to 4.7) | 0.573 |
| Number of psychosocial stressors, mean (SD) | 1.30 (1.40) | 3.73 (2.15) | 2.1 (1.4 to 3.1) | <0.001 |
ORs with CIs and p values are calculated using logistic regression.
Note: there were eight missing questionnaires for AUDIT (seven for the recovered and one for the PCS group). There was one missing questionnaire for Sense of Coherence Scale.
AUDIT, Alcohol Use Disorders Identification Test; GAF, Global Assessment of Function; mTBI, mild traumatic brain injury; PCS, post-concussive symptoms.