Table 1.
Descriptive statistics for variables under investigation in OSAS and control groups
| Variable | OSAS group | Control group |
|---|---|---|
| Catalase‡ (U/mg) | 0.002-0.006 | 0.004-0.006 |
| Glutathione peroxidase (µmol/mg) | 0.04±0.03 | 0.159±0.47 |
| Malondialdehyde (Hmol/L) | 0.698-0.434 | 0.179±0.56 |
| Haemoglobin (g/dl) | 15.93±1.74 | 14.85±1.57 |
| Haematocrit (%) | 47.61±5.67 | 44.66±4.58 |
| Low-density lipoprotein (mg/dl) | 115.47±39.43 | 107.73±33.18 |
| Triglycerides (mmol/l) | 213.00-143.47 | 130.23±112.91 |
| High-density lipoproteins (mmol/l) | 42.00±10.64 | 43.30±11.22 |
| Cholesterol (mmol/l) | 203.93±41.98 | 173.27±41.03 |
| C-reactive protein‡ (mg/l) | 0.919-0.872 | 0.49-0.52 |
| D-dimer (µg/l) | 129.27-93.75 | 136.57±68.53 |
| Ejection fraction (%) | 61.87±5.34 | 64.30±4.76 |
| Smoking habit‡ | 10.30-14.33 | 3.70-8.82 |
| Apnea-hypopnea index | 69.02±29.04 | 2.23±1.43 |
| Oxygen desaturation index | 37.19±21.20 | 1.73±1.60 |
| Minimum O2 saturation (%) | 72.03±10.37 | 92.20±2.56 |
| Mean O2 saturation (%) | 86.63±4.39 | 94.27±1.68 |
| Arousal index | 13.41±8.76 | 1.77±1.52 |
| Body-mass index | 34.35±6.23 | 25.48±2.29 |
| Neck circumference | 41.73±3.22 | 38.43±1.50 |
| Duration of O2 saturation <90% | 179.61±130.06 | 3.47±3.19 |
| Percentage of O2 saturation <90% (%) | 51.21±38.23 | 1.73±1.60 |
| Mean duration of apnea | 17.81±4.12 | 3.47±3.19 |
| Maximum duration of apnea | 79.41±28.09 | 1.73±1.60 |
‡
expressed in median-interquartile range; the rest of variables are demonstrated as median ± standard deviation.