Table 1.
General Characteristics of the Study Participants
| Characteristic | Entire group | Female | Male |
|---|---|---|---|
| Participants | 10 | 6 | 4 |
| Age (years) | 22.5 (21.0–24.5) | 22.0 (21.0–25.0) | 21.0 (20.0–22.0) |
| Anthropometrics | |||
| Height (m) | 1.66 (1.60–1.78) | 1.60 (1.58–1.64) | 1.78 (1.69–1.87) |
| Weight (kg) | 60.0 (57.0–76.5) | 57.0 (53.0–58.0) | 75.0 (62.0–78.0) |
| BMI (kg/m2) | 21.71 (20.95–24.62) | 20.95 (20.44–23.23) | 21.71 (21.45–24.62) |
| Neck circumference (cm) | 33.0 (31.0–38.5) | 31.0 (30.0–32.0) | 38.0 (33.0–42.0) |
| Waist circumference (cm) | 80.5 (70.0–88.5) | 70.0 (70.0–79.0) | 86.0 (84.0–91.0) |
| Hip circumference (cm) | 89.0 (85.0–94.5) | 84.0 (79.0–91.0) | 89.0 (86.0–94.0) |
| Waist-to-hip | 0.90 (0.85–0.97) | 0.88 (0.83–0.89) | 0.96 (0.96–0.97) |
| Mallampati score | 2.0 (1.5–3.0) | 1.5 (1.0–3.0) | 2.0 (2.0–3.0) |
| Wakefulness SpO2 | |||
| SL | 98.5 (98.0–98.5) | 98.5 (98.0–98.5) | 98.5 (98.0–98.5) |
| HA | 94.0 (92.5–95.0) | 94.0 (93.0–95.0) | 93.3 (92.0–95.0) |
| Sleep parameters | |||
| Mean nocturnal saturation (%) | |||
| SL | 95.7 (95.1–96.2) | 95.9 (95.5–96.2) | 94.9 (94.8–95.7) |
| HA | 86.9 (84.7–88.9) | 88.9 (87.6–90.3) | 88.3 (85.6–90.0) |
| AHI (events per hour) | |||
| SL 3% + arousals | 1.4 (0.8–3.0) | 1.6 (0.8–2.7) | 1.1 (0.8–4.6) |
| SL 4% | 0.7 (0.4–1.5) | 1.3 (0.4–1.6) | 0.5 (0.4–0.7) |
| HA 3% + arousals | 10.3 (5.7–15.4) | 6.3 (3.8–11.4) | 8.4 (3.7–14.2) |
| HA 4% | 4.7 (2.2–7.8) | 2.7 (1.6–5.6) | 3.3 (1.7–5.8) |
Data are presented as n or median (interquartile range). The mean nocturnal saturation: mean nocturnal SpO2.
AHI, Apnea–Hypopnea Index; BMI, body mass index; HA, high altitude; SL, sea level; SpO2, oxyhemoglobin saturation.