Performance of a Portable Sleep Monitoring Device in Individuals with High Versus Low Sleep Efficiency Performance of a Portable Sleep Monitoring Device in Individuals with High Versus Low Sleep Efficiency Download Mechanism of Gastroesophageal Reflux in Obstructive Sleep Apnea: Airway Obstruction or Obesity? Post Hoc Analysis of Data from Two Clinical Trials Evaluating the Minimal Clinically Important Change in International Restless Legs Syndrome Sum Score in Patients with Restless Legs Syndrome (Willis-Ekbom Disease)