Table 1.

Prevalence of obstructive sleep apnea (OSA) and its level of severity, according to sex.

	Non-OSA AHI ≤5% (95% CI)	Mild OSA 5 <AHI ≤15% (95% CI)	Moderate OSA 15 <AHI ≤30% (95% CI)	Severe OSA AHI >30% (95% CI)
Men n = 117	32.61 (24.69–40.53)	17.39 (10.99–23.79)	26.09 (18.67–33.51)	23.91 (16.71–31.12)
Women n = 138	45.30 (36.15–54.45)	29.06 (20.71–37.41)	18.80 (11.62–25.99)	6.84 (2.20–11.48)
Total n = 255	38.43 (32.43–44.70)	22.74 (17.75–28.89)	22.74 (17.75–28.89)	16.08 (11.79–21.17)

Non-OSA: Pearson’s chi-square = 4.310; p = 0.038. Mild OSA: Pearson’s Chi-square = 4.906; p = 0.027. Moderate OSA: Pearson’s Chi-square = 1.191; p = 0.167. Severe OSA: Pearson’s Chi-square = 13.682; p < 0.001. AHI, apnea-hypopnea index. 95% CI: 95% confidence interval.