Table 1. Baseline characteristics of adherent and non-adherent patients.* .
| Variables | Adherent patients | Non-adherent patients | P |
| N | 674 | 467 | |
| Age ≥65 years (%) | 23.3 | 21.6 | 0.49 |
| Female (%) | 26 | 29.1 | 0.24 |
| Current smokers (%) | 16.6 | 21.4 | 0.05 |
| Body mass index (kg/m2) | 32.9 (6.7) | 32.1 (6.9) | 0.03 |
| Body mass index<25 kg/m2 (%) | 7.4 | 12.9 | 0.01 |
| Body mass index ≥25 and ≤30 kg/m2 (%) | 30.5 | 29 | |
| Body mass index >30 kg/m2 (%) | 62.1 | 58.1 | |
| Apnea-hypopnea index | 46.4 (22.1) | 41.5 (21.3) | 0.0002 |
| Apnea-hypopnea index <30 (%) | 19.7 | 29.3 | 0.0002 |
| Epworth sleepiness scale | 10.6 (4.9) | 10.5 (5.2) | 0.83 |
| Epworth sleepiness scale <11 (%) | 49.6 | 50.3 | 0.85 |
| Pichot depression score ≥7 (%) | 20.8 | 24.2 | 0.18 |
| Patients with cardiovascular morbidity (%) | 63.5 | 61.5 | 0.27 |
| Married or living as a couple (%) | 78.8 | 72.8 | 0.03 |
| Patients who left full-time education ≤18 years (%) | 71.2 | 69.4 | 0.63 |
| Employment status | 0.01 | ||
| Employed full time or part time (%) | 40.6 | 46.7 | |
| Unemployed (%) | 4.9 | 7.2 | |
| Retired (%) | 54.5 | 46.1 | |
| Last occupation | 0.75 | ||
| Farmers (%) | 4.1 | 4.1 | |
| Craftsman, shopkeepers, company directors (%) | 9.1 | 10.9 | |
| Executives and higher intellectual professions (%) | 15.3 | 15.9 | |
| Intermediate professions, technicians, foremen (%) | 14.7 | 16.9 | |
| Employees (%) | 14.0 | 14.1 | |
| Workers (%) | 26.7 | 23.6 | |
| Missing data (%) | 16.3 | 14.6 |
*Results presented as mean (standard deviation) unless otherwise indicated.
Adherent patients: continuous positive airway pressure (CPAP) use ≥4 h/night.
Non-adherent patients: CPAP refused or abandoned, or CPAP use<4 h/night.
Significant level for p value: <0.05.