This study demonstrated that nearly half of patients with OSA have co-morbid SB. Male sex, lower BMI, and a higher percentage of sleep stage 1 increase the odds of having SB. However, the clinical relevance of the latter is doubtful given the low OR and lack of other supportive evidence. Further, although SB was not directly correlated with respiratory events and sleep arousals, the majority of SB events were time-related to sleep arousals.
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