Table 1. Characteristics of the study sample by group.a .
| Variable | Group | p | |||
|---|---|---|---|---|---|
| COPD + OSAS | COPD + mild-to-moderate OSAS | COPD + severe OSAS | COPD-only | ||
| (n = 46) | (n = 32) | (n = 14) | (n = 20) | ||
| Prevalence, % | 69.70 | 48.48 | 21.21 | 30.30 | |
| Male gender, n (%) | 26 (56.52) | 16 (50.0) | 10 (71.43) | 4 (20.0)* | 0.006 |
| Age, years | 61.56 ± 11.30 | 63.78 ± 10.82 | 56.50 ±11.13 | 59.75 ±9.68 | 0.163 |
| BMI, kg/m2 | 34.00 ± 5.67 | 32.95 ± 5.34 | 36.41 ± 5.84 | 33.89 ±6.75 | 0.157 |
| AHI, events/h | 18.35 (11.05-39.62) | 12.95 (9.75-19.97)* | 68.55 (41.25-61.22) | 1.70 (0.65-2.40)* | 0.006 |
OSAS: obstructive sleep apnea syndrome; BMI: body mass index; and AHI: apnea-hypopnea index. aValues expressed as mean ± SD or as median (interquartile range), except where otherwise indicated. *p < 0.05.