Table 2 Sex distribution and causes of mild traumatic brain injury by age in all 732 cases
From: The epidemiology of mild traumatic brain injury: the Trondheim MTBI follow-up study
Age groups (years) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
All | 16–20 | 21–25 | 26–30 | 31–35 | 36–40 | 41–45 | 46–50 | 51–55 | 56–60 | |
N = 732 | n = 175 | n = 153 | n = 87 | n = 68 | n = 46 | n = 42 | n = 72 | n = 54 | n = 35 | |
Sex, male | 62% | 55% | 63% | 62% | 65% | 72% | 62% | 67% | 59% | 60% |
Cause of injury n (%) | ||||||||||
Fall | 267 (37) | 51 (29) | 50 (33) | 29 (33) | 24 (35) | 15 (33) | 15 (36) | 34 (47) | 27 (50) | 22 (63) |
Violence | 144 (20) | 39 (22) | 39 (26) | 21 (24) | 13 (19) | 11 (24) | 4 (10) | 9 (13) | 5 (9) | 3 (9) |
Bicycle | 98 (13) | 11 (6) | 14 (9) | 8 (9) | 12 (18) | 9 (20) | 7 (17) | 17 (24) | 11 (20) | 9 (26) |
Sports | 81 (11) | 33 (19) | 25 (16) | 5 (6) | 4 (6) | 5 (11) | 5 (12) | 3 (4) | 1 (2) | – |
MVA | 83 (11) | 32 (18) | 9 (6) | 14 (16) | 6 (9) | 4 (9) | 5 (12) | 6 (8) | 6 (11) | 1 (3) |
Struck object | 37 (5) | 7 (4) | 9 (6) | 7 (8) | 6 (9) | 2 (4) | 3 (7) | 2 (3) | 1 (2) | – |
Other | 9 (1) | 1 (1) | 3 (2) | 1 (1) | 2 (3) | – | – | 1 (1) | 1 (2) | – |
Unknown | 13 (2) | 1 (1) | 4 (3) | 2 (2) | 1 (2) | – | 3 (7) | – | 2 (4) | – |