| OSA | Obstructive sleep apnea |
| SRDB-PSQ | Sleep-Related Breathing Disorder subscale of the Pediatric Sleep Questionnaire |
| PSQ | Pediatric Sleep Questionnaire |
| CHAT | Childhood Adenotonsillectomy Trial |
| POSTA | Preschool Obstructive Sleep Apnea Tonsillectomy and Adenoidectomy study |
| AHI | apnea-hypopnea-index |
| RCTs | randomized controlled trials |
| AASM | American Academy of sleep medicine |
| ICSD | International Classification of Sleep Disorders |
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