CPAP use ratio | Relative risk of mortality ratio | Lower 95% CI | Upper 95% CI | p-value |
No use/short-term use | 3.14 | 2.69 | 3.66 | <0.001 |
No use/long-term use | 5.63 | 4.83 | 6.58 | <0.001 |
Short-term use/long-term use | 1.74 | 1.49 | 2.02 | <0.001 |
No use is defined as: patients who refused CPAP treatment (n=447). Short-term use is defined as: patients who used CPAP for ≤5 years. Long-term use is defined as: patients who used CPAP for > 5 years CPAP: continuous positive airway pressure, CI: confidence interval.