| AHI | Apnea/hypopnea index |
| CBTi | Cognitive and behavioral therapy for insomnia |
| COMISA | Co-morbid insomnia and sleep apnea |
| CPAP | Continuous positive airway pressure |
| ISI | Insomnia severity index |
| OSA | Obstructive sleep apnea |
| PSG | Polysomnography |
| RCT | Randomized controlled trial |
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