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Figure 1

From: Difference in spectral power density of sleep EEG between patients with simple snoring and those with obstructive sleep apnoea

Figure 1

Comparisons of the absolute power spectral density during NREM sleep between the SS and OSA groups. *p < 0.05 in ANCOVA controlling for age and sex after Bonferroni correction (uncorrected p value × 6) for correction of multiple comparisons. Bars denote mean ± standard deviation. NREM, non-rapid eye movement; SS, simple snoring; OSA, obstructive sleep apnoea; ANCOVA, analysis of covariance.

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