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. 2018 Sep 13;46(11):4377–4385. doi: 10.1177/0300060518786906

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© The Author(s) 2018

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Figure 5. — Subgroup analysis: apnea–hypopnea index of <30. OSAHS, obstructive sleep apnea–hypopnea syndrome; SD, standard deviation; CI, confidence interval.