Objectives: This study aimed to investigate and compare the clinical characteristics of obstructive sleep apnea (OSA) and co-morbid insomnia and sleep apnea (COMISA) using sleep questionnaires and polysomnographic findings. Methods: We enrolled 850 patients who completed sleep questionnaires and underwent level 1 polysomnography (PSG) with an apnea-hypopnea index (AHI) ≥15. Patients were classified as OSA if the Insomnia Severity Index (ISI) pp<0.05). The COMISA group underestimated their sleep quality, while the OSA group had less insight into sleep problems. Conclusions: Patients with COMISA and OSA have different subjective and objective sleep profiles and perceptions of sleep. Understanding each characteristic and properly differentiating between COMISA and OSA in the clinic for tailored management is needed.
Bae et al. (Wed,) studied this question.