| PSQI | Pittsburgh Sleep Quality Index |
| PCSS | Post-Concussion Symptom Scale |
| ImPACT | Immediate Post-Concussion Assessment and Cognitive Testing |
| ESS | Epworth Sleepiness Scale |
| NOS | Newcastle–Ottawa Scale |
| RCT | Randomised Controlled Trial |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
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