Table 1.
Demographic and Clinical Profile of Study Patients by Obstructive Sleep Apnoea (OSA) Presence
| Clinical Parameters | Unit/Category | OSA Group (n=221) | No-OSA Group (n=27) | p-value |
|---|---|---|---|---|
| Sex | Female | 109 (49%) | 20 (74%) | 0.023* |
| Age (first contact) | Year | 48.69 (39.48, 57.06) | 43.62 (32.3, 51.69) | 0.101 |
| Height | cm | 167.6 (161.5, 174) | 164 (160, 170) | 0.145 |
| Weight | kg | 98 (86.95, 115.45) | 88 (71, 98.6) | <0.001* |
| Neck circumference | cm | 43 (39.5, 47) | 40 (37, 43) | 0.002* |
| Body mass index | kg/m2 | 35.04 (30.85, 40.38) | 31.38 (27.44, 34.12) | 0.001* |
| Corpulence status | Underweight | 0 (0%) | 0 (0%) | 0.018* |
| Normal weight | 6 (3%) | 2 (8%) | ||
| Overweight | 37 (17%) | 9 (35%) | ||
| Obese | 177 (80%) | 15 (58%) | ||
| Origin | Outer regional | 120 (54%) | 19 (70%) | 0.332 |
| Remote | 21 (10%) | 1 (4%) | ||
| Very remote | 80 (36%) | 7 (26%) | ||
| Smoking data and status | Had smoking info | 211 (95%) | 25 (93%) | 0.626 |
| Current smoker | 96 (45%) | 13 (50%) | 0.796 | |
| Former smoker | 55 (26%) | 5 (20%) | ||
| Never smoker | 61 (29%) | 7 (28%) | ||
| Epworth sleepiness scale | Absolute value | 10 (6, 14) | 7 (4, 13) | 0.039* |
| Chronic obstructive pulmonary disease | Yes | 59 (27%) | 5 (19%) | 0.486 |
| Time lag between polysomnography and spirometry | Days | 22.5 (3, 173) | 20 (4, 257) | 0.804 |
Notes: Data were median (interquartile range) or number (%). p-values obtained via Kruskal–Wallis rank sum test for continuous parameters and chi-squared test for categorical parameters (utilising Fishers exact test in cases where cell counts were <10). *Indicates significance at p<0.05.