Diagnostic accuracy of three screening questionnaires for predicting moderate to severe obstructive sleep apnea in patients with morbid obesity

This is a cross-sectional study was conducted in a university hospital including adult subjects with morbid obesity suspected of having obstructive sleep apnea (OSA). This study aimed to evaluate the accuracy of the Epworth Sleepiness Scale (ESS), STOP-BANG, and Berlin Questionnaire (BQ) in detecting moderate to severe OSA in patients with morbid obesity.