Table 4. Association of Serum Biomarkers With Breaching and Duration of Servicea.
| Biomarker | Breaches during career | Breaches in the past year | Duration of service | |||
|---|---|---|---|---|---|---|
| r | P valueb | r | P valueb | r | P valueb | |
| GFAP | 0.06 | .63 | −0.18 | .13 | −0.18 | .13 |
| UCH-L1 | 0.12 | .32 | −0.07 | .59 | 0.10 | .44 |
| NfL | 0.19 | .10 | −0.22 | .07 | −0.13 | .28 |
| Tau | 0.15 | .21 | 0.15 | .21 | 0.25 | .04 |
| Aβ-42 | 0.16 | .17 | −0.05 | .69 | 0.28 | .02 |
| Aβ-40 | 0.01 | .95 | 0.19 | .11 | 0.12 | .32 |
Abbreviations: Aβ, amyloid β; GFAP, glial fibrillary acidic protein; NfL, neurofilament light chain; UCH-L1, ubiquitin carboxyl hydrolase-L1.
a
Serum biomarker levels were compared with number of breaches during career, number of breaches in the past year, and duration of service in a random sample of participants.
b
Age-adjusted P values are indicated (2-sided Spearman correlation).