Table 2.
Characteristics of Olmsted County Residents Who Met Rochester Epidemiology Project (REP) Criteria for Incident Traumatic Brain Injury (TBI) from 1/1/1988 to 12/31/1999
| Subject characteristics | Total | Definite | Probable | Possible (symptomatic) | p Value |
|---|---|---|---|---|---|
| Number (%) | 1145a | 93 (8%) | 435 (38%) | 617 (54%) | |
| Male, n (%) | 637 (56%) | 54 (58%) | 274 (63%) | 309 (50%) | <0.001 |
| Age distribution, years, n (%) | <0.001 | ||||
| < 16 years | 398 (35%) | 13 (14%) | 137 (31%) | 248 (40%) | |
| 16–64 years | 640 (56%) | 54 (58%) | 259 (60%) | 327 (53%) | |
| > 64 years | 107 (9%) | 26 (28%) | 39 (9%) | 42 (7%) | |
| Special case, n (%)b | 205 (18%) | 25 (27%) | 108 (25%) | 72 (12%) | <0.001 |
| Mechanism of injury, n (%) | <0.001 | ||||
| Fall | 312 (27%) | 33 (35%) | 94 (22%) | 185 (30%) | |
| Motor vehicle accident | 316 (28%) | 32 (34%) | 150 (34%) | 134 (22%) | |
| Hit by object | 64 (6%) | 5 (5%) | 18 (4%) | 41 (7%) | |
| Assault/gunshot | 79 (7%) | 9 (10%) | 38 (9%) | 32 (5%) | |
| Sports/recreation | 283 (25%) | 9 (10 %) | 123 (28%) | 151 (24%) | |
| Other | 91 (8%) | 5 (5%) | 12 (3%) | 74 (12%) |
a
The number of individuals who were included in the 16% random sample from the list of all 46,114 potential cases 1985 through 1999, and who following detailed medical record review were confirmed as having met REP criteria for first lifetime clinically-recognized definite, probable, or possible TBI (Table 1) from 1/1/1988 through 12/31/1999.
b
Cases who presented to the emergency department or hospital and received a diagnosis code indicative of co-occurring non-head injury.