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Do all individuals with sleep apnea suffer from daytime sleepiness? A preliminary investigation

We derived descriptive characteristics related to habitual sleep duration and insomnia for individuals newly diagnosed with sleep apnea/hypopnea syndrome and evaluated how sleep apnea/hypopnea syndrome, insomnia, depression, and sleep duration relate to sleepiness and fatigue. In total, 100 participants were divided into three sleep groups: short (<7 hours), long (≥8 hours), and midrange (7–7.9 hours). Polysomnography, insomnia, sleepiness, fatigue, depression, and gender were assessed. Half of the participants were short sleepers. They were more likely to have insomnia than midrange or long sleepers and they were more likely to be sleepy than midrange or long sleepers, regardless of insomnia.