Table 1 Sample characteristics of the matched TBI and control samples (Model I)
Characteristic | TBI sample (N = 463) | Matched controls (N = 463) |
|---|---|---|
Gendera | ||
Female | 203 (44%) | 203 (44%) |
Male | 260 (56%) | 260 (56%) |
Age in yearsa | ||
Mean (SD) | 12.1 (2.66) | 12.1 (2.66) |
Median [Min, Max] | 12 [8, 17] | 12 [8, 17] |
Presence of chronic health conditionsa | ||
No | 374 (81%) | 374 (81%) |
Yes | 89 (19%) | 89 (19%) |
Presence of headache | ||
No | 249 (54%) | 259 (56%) |
A little | 170 (37%) | 167 (36%) |
A lot | 44 (10%) | 37 (8%) |
Number of symptoms other than headacheb | ||
Mean (SD) | 3.61 (3.86) | 3.84 (4.89) |
Median [Min, Max] | 2 [0, 16] | 2 [0, 20] |