Characteristics of the samples of patients with TBI
| All cases | Test–retest sample | German language | |
| N | 792 | 375 | 153 |
| Gender | |||
| Male | 570 (72%) | 269 (72%) | 103 (67%) |
| Female | 222 (28%) | 106 (28%) | 50 (33%) |
| Age (years) | |||
| 17–30 | 270 (34%) | 119 (32%) | 33 (22%) |
| 31–44 | 247 (31%) | 108 (29%) | 28 (18%) |
| 45–68 | 275 (35%) | 148 (39%) | 92 (60%) |
| Highest educational qualification | |||
| Diploma or degree | 260 (35%) | 90 (28%) | 49 (32%) |
| Technical or trade certificate | 216 (29%) | 122 (37%) | 55 (36%) |
| School/other | 260 (35%) | 114 (35%) | 48 (33%) |
| GCS (24 h worst) | |||
| Severe: 3–8 | 463 (58%) | 196 (52%) | 40 (26%) |
| Moderate: 9–12 | 75 (10%) | 39 (10%) | 17 (11%) |
| Mild: 13–15 | 254 (32%) | 140 (37%) | 96 (63%) |
| Major lesion | |||
| None | 116 (15%) | 53 (14%) | 36 (24%) |
| Focal | 416 (53%) | 218 (59%) | 108 (73%) |
| Diffuse | 250 (32%) | 99 (27%) | 4 (3%) |
| Years since injury | |||
| <1 year | 93 (12%) | 37 (10%) | 19 (12%) |
| 1–<2 years | 102 (13%) | 43 (12%) | 23 (15%) |
| 2–<4 years | 202 (26%) | 113 (30%) | 50 (33%) |
| 4–18 years | 392 (50%) | 180 (48%) | 61 (40%) |
| Rehabilitation | |||
| Current | 255 (33%) | 94 (26%) | 6 (4%) |
| Previous | 394 (51%) | 182 (49%) | 79 (52%) |
| No rehabilitation | 128 (16%) | 93 (25%) | 68 (44%) |
| Employment status | |||
| Employed full-time | 168 (23%) | 80 (21%) | 60 (39%) |
| Relationship status | |||
| Single | 301 (41%) | 118 (36%) | 27 (18%) |
| Partnered | 349 (47%) | 170 (52%) | 111 (73%) |
| Past partnered | 90 (12%) | 39 (12%) | 14 (9%) |
| Living arrangements | |||
| Independent | 418 (57%) | 186 (57%) | 111 (73%) |
| Supported | 319 (43%) | 141 (43%) | 42 (27%) |
| Number of comorbid health conditions | |||
| 0–3 | 314 (41%) | 121 (33%) | 63 (41%) |
| 4–6 | 225 (29%) | 128 (35%) | 39 (26%) |
| 7 and more | 234 (30%) | 113 (31%) | 51 (33%) |
| Self-reported health status | |||
| Healthy | 528 (72%) | 230 (72%) | 96 (64%) |
| Unhealthy | 202 (28%) | 91 (28%) | 55 (36%) |
| GOSE at follow-up | |||
| Severe disability (3–4) | 143 (18%) | 86 (23%) | 13 (8%) |
| Moderate disability (5–6) | 432 (54%) | 178 (48%) | 53 (34%) |
| Good recovery (7–8) | 217 (28%) | 111 (30%) | 87 (57%) |
| Questionnaire administration | |||
| Self-completed, face-to-face | 240 (30%) | 130 (35%) | 4 (3%) |
| Self-completed, mail | 323 (41%) | 162 (43%) | 149 (97%) |
| Interview, face-to-face | 215 (27%) | 72 (19%) | 0 |
| Interview, telephone | 13 (2%) | 11 (3%) | 0 |
GCS, Glasgow Coma Scale; GOSE, Extended Glasgow Outcome Scale; TBI, traumatic brain injury.