Table 1.
Characteristics of the study population
| Men (n = 60) | Women (n = 36) | P Value | |
|---|---|---|---|
| Age, y | 50 ± 14 | 51 ± 14 | NS |
| AHI, events/h | 33 (41) | 15 (21) | < 0.001 |
| Mean SaO2 | 93 (4) | 95 (2) | 0.002 |
| Lowest SaO2 | 86 (14) | 89 (5) | 0.004 |
| Number of times SaO2 90% | 163 (1103) | 8 (135) | 0.004 |
| Weight, kg | 98 ± 17) | 89 (22) | 0.03 |
| Height, cm | 175 ± 7 | 161 ± 7 | < 0.0001 |
| BMI, kg/m2 | 32 ± 5 | 34 ± 8 | NS |
| ESS, score | 10 ± 5 | 10 ± 5 | NS |
| Neck circumference, cm | 44 ± 4 | 38 ± 4 | < 0.001 |
| Waist circumference, cm | 111 ± 13 | 105 ± 18 | NS |
| Hip circumference, cm | 112 ± 10 | 120 ± 16 | 0.002 |
| WHR | 1.0 ± 0.1 | 0.9 ± 0.1 | < 0.0001 |
| NWR | 0.37 ± 0.03 | 0.40 ± 0.04 | < 0.0001 |
Data are presented as mean ± SD or median (interquartile range); NS refers to not significant at a P value of > 0.05; AHI, apnea-hypopnea index; BMI, body mass index; ESS, Epworth Sleepiness Scale; WHR, waist-to-hip ratio; NWR, neck-to-waist ratio.