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Baseline demographics
| Breacher | Engineer | |
|---|---|---|
| Number of participants | 11 | 4 |
| Combat experience | 11 | 4 |
| Mean age (years) | 31.3 | 31.3 |
| Median age | 32 | 32–33 |
| Age range | 25–41 | 26–34 |
| Prior blast mTBI | 4 | 0 |
| Prior blunt mTBI | 1 | 1 |
| Subjective hearing loss | 2 | 0 |
| Subjective tinnitus | 3 | 0 |
mTBI, mild traumatic brain injury
