Table 1.
Baseline characteristics of the study population
| Characteristic | Study Population (N = 179,188) |
|---|---|
| Female, n (%) | 72,571 (40.5) |
| Age, yr, mean (median) | 52.5 (53) |
| Obesity, n (%) | 92,282 (51.5) |
| Comorbidities, n (%) | |
| Hypertension | 102,496 (57.2) |
| Coronary artery disease | 21,503 (12.0) |
| Atrial fibrillation | 11,110 (6.2) |
| Heart failure | 10,035 (5.6) |
| Type 2 diabetes | 40,496 (22.6) |
| Chronic obstructive pulmonary disease | 15,948 (8.9) |
| Depression | 28,133 (15.7) |
| None | 53,219 (29.7) |
| Payer, n (%) | |
| Commercial/other | 139,408 (77.8) |
| Medicaid | 21,861 (12.2) |
| Medicare advantage | 18,098 (10.1) |
| Residual AHI, events/h, mean (median) | |
| At 3 mo | 3.0 (1.8) |
| At 12 mo | 2.7 (1.7) |
| At 24 mo | 2.7 (1.6) |
| Healthcare utilization in the year before PAP | |
| Mean number of hospitalizations per patient | 0.11 |
| Mean number of emergency room visits per patient | 0.53 |
Definition of abbreviations: AHI = apnea-hypopnea index; PAP = positive airway pressure.