Moderate to Severe Obstructive Sleep Apnea Is a Risk Factor for Severe COVID-19—A Nationwide Cohort Study
The impact of obstructive sleep apnea (OSA) and positive airway pressure (PAP) treatment on COVID-19 severity is unclear. In this population-based, nationwide study using multi-register data, we aimed to assess if OSA is a risk factor for COVID-19 severity and how adherence to PAP treatment and clinical characteristics affect the risk. Swedish residents with COVID-19 infection January 2020–May 202
