Canadian Respiratory Journal / 2019 / Article / Fig 1

Research Article

Clinical Features and Contributing Factors of Excessive Daytime Sleepiness in Chinese Obstructive Sleep Apnea Patients: The Role of Comorbid Symptoms and Polysomnographic Variables

Figure 1

Flow chart of the patients’ inclusion process. PSG: polysomnography; OSA: obstructive sleep apnea; CPAP: continuous positive airway pressure; PAP: positive airway pressure; OHS: obesity hypoventilation syndrome; EDS: excessive daytime sleepiness.

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