Table 2.
Characteristics and polysomnographic variables of the male and female patients with obstructive sleep apnea after propensity score matching analysis.
| Female (n = 336) | Male (n = 336) | P value | 95% confidence interval | ||
|---|---|---|---|---|---|
| BMI (kg/m2) | 27.8 ± 5.9 | 27.8 ± 4.6 | 0.993 | −0.802 | 0.795 |
| Age (years) | 48.6 ± 12.2 | 48.6 ± 12.7 | 0.990 | −1.871 | 1.895 |
| ESS | 9.4 ± 5.4 | 10.7 ± 5.2 | 0.002 | −2.099 | −0.496 |
| AHI (/h) | 23.7 ± 22.5 | 39.7 ± 27.5 | <0.001 | −19.568 | −11.952 |
| Sleep efficiency (%) | 76.6 ± 16.7 | 77.2 ± 15.3 | 0.602 | −3.061 | 1.777 |
| Arousal index (/h) | 16.3 ± 13.4 | 27.6 ± 19.4 | <0.001 | −13.850 | −8.779 |
| Desaturation index (/h) | 24.6 ± 24.1 | 37.0 ± 27.4 | <0.001 | −16.348 | −8.526 |
| Mean SaO2 (%) | 95.2 ± 2.8 | 93.8 ± 3.3 | <0.001 | 0.999 | 1.924 |
| Lowest SaO2 (%) | 79.2 ± 11.9 | 75.4 ± 13.6 | <0.001 | 1.825 | 5.700 |
Values are mean ± SD. BMI, body mass index; ESS, Epworth Sleepiness Scale; AHI, apnea-hypopnea index; SaO2, oxygen saturation.