Mean scores in each outcome measure and the comparison of soldiers reporting injury versus not reporting an injury
| Outcome measure | All soldiers | Injured | Uninjured | P value |
| Global PSQI score | 7.4±3.9 | 9.0±4.1 | 6.4±3.4 | <0.001 |
| C1: sleep quality | 1.4±0.8 | 1.7±0.8 | 1.2±0.7 | <0.001 |
| C2: sleep latency | 1.3±1.0 | 1.7±1.1 | 1.1±1.0 | <0.001 |
| C3: sleep duration | 1.3±1.0 | 1.4±1.0 | 1.1±0.9 | 0.031 |
| C4: sleep efficiency | 0.7±1.0 | 0.9±1.1 | 0.6±0.9 | 0.023 |
| C5: sleep disturbance | 1.2±0.7 | 1.4±0.6 | 1.1±0.6 | 0.001 |
| C6: sleep medication use | 0.5±1.0 | 0.7±1.1 | 0.3±0.8 | 0.004 |
| C7: daytime dysfunction | 1.0±1.0 | 1.2±1.0 | 0.9±0.9 | 0.009 |
| Sleep duration (hours) | 5.9±1.3 | 5.7±1.3 | 6.1±1.2 | 0.026 |
| Epworth Sleepiness Scale | 8.2±5.1 | 8.7±5.5 | 7.8±4.8 | 0.147 |
| Pain level (0–10) | 2.2±2.4 | 3.7±2.5 | 1.3±1.9 | <0.001 |
Mean±SD. Between-group differences after conducting an analysis of covariance (ANCOVA), controlling for age and time in service.
C, component; PSQI, Pittsburgh Sleep Quality Index.