Table 1.
Baseline characteristics of patients with obstructive sleep apnea and control subjects
| OSA patients (n = 16) | Control subjects (n = 16) | P value | |
|---|---|---|---|
| Age (years) | 36 ± 9 | 36 ± 11 | ns |
| Gender (% female) | 44 | 50 | ns |
| Body mass index (kg/m2) | 27 ± 2 | 26 ± 3 | ns |
| Apnea–Hypopnea index (events/h of sleep) | 22 ± 24 | 0.1 ± 0.5 | <0.001 |
| SaO2 nadir (%) | 88 ± 5 | 97 ± 1 | <0.001 |
| t < SaO2 90% (% of the total sleep time)a | 1.4 ± 2.6 | 0 ± 0 | <0.001 |
| Epworth sleepiness scale score | 12 ± 5 | 4 ± 3 | <0.001 |
| Systolic blood pressure (mm Hg) | 118 ± 13 | 120 ± 10 | ns |
| Diastolic blood pressure (mm Hg) | 71 ± 10 | 73 ± 10 | ns |
| Fasting glucose (mg/dL) | 90 ± 16 | 87 ± 10 | ns |
| Total cholesterol (mg/dL) | 183 ± 56 | 188 ± 45 | ns |
Notes: Data are presented as mean ± standard deviation or %.
a
Time spent below SaO2 of 90% during sleep.
Abbreviations: NS, not significant; OSA, obstructive sleep apnea; SaO2, arterial oxyhemoglobin saturation.