CPAP Observance During the COVID-19 (SARS-CoV-2) Pandemic

Inclusion Criteria: * patient treated/monitored by the Adene group * treated for sleep apnea syndrome (i.e., an initial apnoea hypopnea index (iAHI) ≥ 30/h or iAHI ≥ 15/h (and more than 10/h respiratory-effort-related arousal or cardio-metabolic/respiratory comorbidities) associated with symptoms from among sleepiness, tiredness, snoring, headaches, hypertension, reduced vigilance, libido disorders, nocturia, choking or suffocation during sleep, daytime tiredness) * Positive airway pressure (PAP)-treated for at least 4 months before January 1, 2019 * continuous PAP during 2019 * continuous PAP during 2020 * acceptance of PAP telemonitoring with consent given for data collection and data anonymization Exclusion Criteria: * less than 360 daily PAP tele-monitored data per year for 2019 * less than 360 daily PAP tele-monitored data per year for 2020