| AHI | Apnea-hypopnea index |
| AR | Allergic rhinitis |
| AT | adenotonsillectomy |
| BMI | Body mass index |
| CPAP | Continuous positive airway pressure |
| DS | Down syndrome |
| MeSH | Medical Subject Headings |
| NOS | Newcastle–Ottawa Scale |
| OSA | Obstructive sleep apnea |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta–Analysis |
| PSG | Polysomnography |
| rOSA | Residual obstructive sleep apnea |
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