TABLE 2.
Results From Multivariate Poisson Mixed-Effects Modeling Showing the Relative Risk of Injury per 1000 Athlete-Exposures and 1000 Minutes of Exposurea
| Factor | Rate Ratio per 1000 Athlete-Exposures (95% CI) | P Value | Rate Ratio per 1000 Minutes of Exposure (95% CI) | P Value |
|---|---|---|---|---|
| Age, y | 1.00 (0.98-1.02) | .912 | 1.00 (0.98-1.02) | .779 |
| Male (ref. female) | 1.36 (0.87-2.11) | .173 | 1.26 (0.76-2.09) | .364 |
| Professional (ref. amateur) | 2.01 (1.10-3.66) | .023 | 1.54 (0.74-3.19) | .244 |
| Light (ref. heavy) | 1.17 (0.83-1.64) | .371 | 0.72 (0.49-1.07) | .101 |
| Middle (ref. heavy) | 1.30 (1.05-1.61) | .018 | 0.99 (0.77-1.28) | .969 |
| Title fight (ref. non–title fight) | 1.13 (0.86-1.49) | .385 | 0.97 (0.71-1.34) | .875 |
| Loser (ref. winner) | 3.56 (2.83-4.48) | <.001 | 3.61 (2.77-4.71) | <.001 |
| KO (ref. decision) | 2.17 (1.63-2.90) | <.001 | 6.24 (4.45-8.74) | <.001 |
| TKO (ref. decision) | 2.05 (1.66-2.53) | <.001 | 4.83 (3.79-6.15) | <.001 |
aKO, knockout; ref, reference; TKO, technical knockout.