Table 1.
Comparison of clinical characteristics and polysomnographic parameters according to OSA severity
| Controls | Moderate OSA | Severe OSA | p values | |
|---|---|---|---|---|
| Subjects (n) | 15 | 27 | 43 | |
| Age | 33.60 ± 5.12 | 34.96 ± 4.16 | 36.45 ± 4.30 | 0.082 |
| Antihypertensive agents, number (%) | 1/15(6.7) | 4/27(14.8) | 17/43(39.5) | 0.012* |
| Antidiabetic agents, number (%) | 0/15(0.0) | 2/27(7.4) | 4/43(9.3) | 0.403 |
| Current smoking, number (%) | 3/15(20.0) | 12/27(44.4) | 15/43(34.9) | 0.364 |
| Neck circumference (cm) | 38.61 ± 2.62 | 40.50 ± 3.06 | 42.33 ± 5.07 | 0.012* |
| Waist circumference (cm) | 90.79 ± 9.46 | 95.11 ± 7.13 | 100.29 ± 8.84 | 0.001* |
| BMI (kg/m2) | 25.39 ± 3.13 | 26.92 ± 2.25 | 29.25 ± 3.74 | 0.000* |
| AHI | 6.80(5.30,9.20) | 34.15(20.10,43.68) | 69.62(58.10,80.35) | 0.000* |
| ODI | 3.40(1.30,8.15) | 23.85(14.45,30.31) | 64.15(49.03,71.20) | 0.000* |
| T90%(%) | 0.06(0.00,0.42) | 2.50(0.25,5.86) | 20.38(8.83,33.04) | 0.000* |
| LaSO2 (%) | 88.00(84.00,90.25) | 80.50(69.25,87.00) | 61.50(49.75,72.50) | 0.000* |
| AHTI | 2.19(1.19,3.49) | 14.66(10.03,23.73) | 31.12 (27.28,40.65) | 0.000* |
| ESS score | 5.00(3.00,12.00) | 6.50(5.00,10.00) | 10.00(6.00,14.50) | 0.024* |
OSA Obstructive sleep apnea, BMI Body mass index, AHI Apnea–hypopnea index, ODI Oxygen desaturation index, T90% the percentage of total sleep time spent with SpO2 < 90%, LaSO2 lowest O2 saturation, AHTI Apnea and hypopnea time index, ESS score Epworth Sleepiness Scale score, *p was considered statistically significant