Multivariate Cox regression results for any injury and any time-loss injury
| Variable | Level of variable | Any injury | Any time-loss injury | ||||||
| n | HR | 95% CI | p Value* | n | HR | 95% CI | p Value* | ||
| Age (years) | <0.01 | ||||||||
| 17–19 | 144 | 1.00 | Referent | ||||||
| 20–24 | 278 | 0.71 | 0.55 to 0.93 | 0.01 | |||||
| 25–29 | 151 | 0.89 | 0.66 to 1.19 | 0.43 | |||||
| 30–43 | 73 | 0.41 | 0.27 to 0.63 | <0.01 | |||||
| Military rank | <0.01 | ||||||||
| Private | 457 | 1.00 | Referent | ||||||
| JNCO | 133 | 0.60 | 0.44 to 0.82 | <0.01 | |||||
| SNCO/officer | 58 | 0.25 | 0.13 to 0.48 | <0.01 | |||||
| Rating of amount of physical activity† | Less/same | 345 | 1.00 | Referent | |||||
| More/lot more | 303 | 1.44 | 1.13 to 1.82 | 0.01 | |||||
| Weekly jog/run training frequency | 0.02 | ||||||||
| ≤1 | 98 | 1.00 | Referent | ||||||
| 2–3 | 363 | 1.00 | 0.72 to 1.38 | 0.98 | |||||
| ≥4 | 187 | 0.68 | 0.46 to 0.99 | 0.05 | |||||
| Previous lower limb injuries | No | 232 | 1.00 | Referent | 231 | 1.00 | Referent | ||
| Yes | 414 | 1.49 | 1.19 to 1.87 | <0.01 | 417 | 1.32 | 1.03 to 1.69 | 0.03 | |
| Previous lower back injuries | No | 452 | 1.00 | Referent | |||||
| Yes | 194 | 1.30 | 1.03 to 1.63 | 0.03 | |||||