Table 1.
Demographic data at the time of the first cognitive decline assessment.
| TBI– (n = 248) | TBI+ (n = 361) | p-value for row main effect from two-way ANOVA | |
|---|---|---|---|
| Age | 74.87 (9.58) | 71.62 (11.24) | <0.001* |
| Sex | 0.96 | ||
| Male TBI– (n = 156); TBI+ (n = 229) | 74.14 (9.41) | 70.83 (11.5) | |
| Female TBI– (n = 92); TBI+ (n = 132) | 76.11 (9.79) | 72.99 (10.6) | |
| Race | **0.056 | ||
| African American TBI– (n = 32); TBI+ (n = 4) | 76.96 (6.60) | 70.09 (11) | |
| American Indian TBI– (n = 1); TBI+ (n = 4) | 63 (–) | 50 (14.4) | |
| Asian TBI– (n = 8); TBI+ (n = 3) | 78.5 (10.3) | 73.3 (18.5) | |
| Multiracial TBI– (n = 7); TBI+ (n = 21) | 71.83 (10.5) | 66.94 (14.4) | |
| White TBI– (n = 199); TBI+ (n = 289) | 74.53 (9.89) | 72.48 (10.7) | |
| Education | 0.45 | ||
| High school or less TBI– (n = 62); TBI+ (n = 103) | 76.31 (10.1) | 71.23 (11.6) | |
| Bachelor's Degree TBI– (n = 108); TBI+ (n = 140) | 74.51 (9.07) | 71.91 (12.1) | |
| Master's Degree TBI– (n = 50); TBI+ (n = 82) | 74.32 (9.26) | 70.68 (9.34) | |
| Doctorate Degree TBI– (n = 28); TBI+ (n = 33) | 74.07 (10.9) | 74.09 (11.1) |
*
p-value represents t-test between TBI– and TBI+.
**
Due to the paucity of the American Indian subjects in this cohort, we included them in Multiracial category group.
Interactions between sex, race, education levels in all two-way ANOVAs were not significant.
The table shows the main demographic data found in TBI+ (subjects with a previous history of TBI at the time of their first cognitive decline assessment) and TBI– (subjects without a previous history of TBI at the time of their first cognitive decline assessment).