Table 1.
Anthropometric data of participants stratified according to the criteria of low arousal threshold OSA (Low-ArTH).
| Categorical Variables | Non-OSA Group (n = 368) |
Low-ArTH Group (n = 1850) |
p |
|---|---|---|---|
| Age (years) | 39.08 ± 12.43 | 48.83 ± 13.55 | <0.01 |
| Sex (men/women) * | 132/236 | 1121/729 | <0.01 |
| BMI (kg/m2) | 22.74 ± 3.53 | 25.99 ± 4.26 | <0.01 |
| Neck circumference (cm) | 33.9 ± 4.1 | 36.88 ± 4.49 | <0.01 |
| Waist circumference (cm) | 79.09 ± 10.39 | 89.82 ± 10.8 | <0.01 |
| Body composition | |||
| Visceral fat level (score) | 6.35 ± 3.9 | 10.95 ± 4.27 | <0.01 |
| Body Fat percent (%) | 26.61 ± 8.0 | 28.61 ± 8.94 | <0.01 |
| trunk–limb fat ratio | 1.17 ± 0.23 | 1.35 ± 0.2 | <0.01 |
| Muscle percent (%) | 18.36 ± 4.02 | 17.79 ± 4.8 | 0.41 |
| Basal metabolic rate (kcal) | 5449.27 ± 982.4 | 6072.31 ± 1152.2 | <0.01 |
| Body water distribution | |||
| TBW (%) | 50.97 ± 4.93 | 49.74 ± 5.46 | <0.01 |
| ECW (%) | 40.95 ± 2.03 | 41.96 ± 2.61 | <0.01 |
| ICW (%) | 59.05 ± 2.03 | 58.04 ± 2.61 | <0.01 |
| E-I water ratio | 0.7 ± 0.06 | 0.73 ± 0.08 | <0.01 |
| OSA severity (n, %) * | <0.01 | ||
| Normal | 368 (100%) | - | |
| Mild | - | 745 (40.27%) | |
| Moderate | - | 805 (43.51%) | |
| Severe | - | 300 (16.22%) |
Definition of abbreviations: Low-ArTH—low arousal threshold; BMI—body mass index; trunk–limb fat distribution—distribution of trunk fat mass to limb fat mass; TBW—total body water; ICW—intracellular water; ECW—extracellular water; E-I water ratio—ratio of extracellular to intracellular water; OSA—obstructive sleep apnea. Data are expressed as mean ± standard deviation. Differences between groups were assessed using a Mann–Whitney U-test. * Differences between groups were assessed using a chi-square test. Note: Calculation of trunk–limb fat ratio: trunk fat (kg)/limb fat (kg); Calculation of TBW (%): TBW (kg)/body weight (kg) × 100; Calculation of ECW (%): ECW (kg)/TBW (kg) × 100; Calculation of ICW (%): ICW (kg)/ TBW (kg) × 100; Calculation of E–I ratio: ECW/ICW.