Table 2.
Histology cohort demographics
| No CTE | Mild CTE | Severe CTE | p value | |
|---|---|---|---|---|
| Sample size (n) | 10 | 24 | 23 | |
| Cohort | ||||
| UNITE | 10 (100%) | 24 (100%) | 23 (100%) | |
| CTE stage | p < 0.001 | |||
| McKee Stage I | 0 | 12 | 0 | |
| McKee Stage II | 0 | 12 | 0 | |
| McKee Stage III | 0 | 0 | 13 | |
| McKee Stage IV | 0 | 0 | 10 | |
| Age at death (SEM) | 60.11 (2.63) | 64.30 (2.39) | 69.76 (2.24) | p = 0.521 |
| Sex male (%) | 10 (100%) | 24 (100%) | 23 (100%) | |
| RHI y/n (% exposed) | 10 (100%) | 24 (100%) | 23 (100%) | |
| Exposure years (SEM) | 8.67 (2.08) | 15.80 (2.43) | 16.70 (1.57)* | p > 0.05a,c, p = 0.030b |
Data are presented as mean (SEM) years for age at death and as # yes/# no (%) unless otherwise indicated.
CTE: chronic traumatic encephalopathy; RHI: repetitive head impacts.
*
Data for one individual in this group not available. p Values determined using ANOVA or χ2 test for proportions between groups.
Significant (p < 0.05) post hoc comparisons are indicated as follows: a: No CTE vs Low CTE, b: No CTE vs High CTE, c: Low CTE vs High CTE.