Roux-en-Y gastric bypass versus sleeve gastrectomy: nationwide data from the Danish quality registry for treatment of severe obesity.

Background: Bariatric surgery as treatment of obesity is increasing worldwide. No guidelines exist on which type of bariatric procedure to choose for the individual patient.

Objectives: This study aims to compare Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) with respect to weight loss, complications, comorbidities, and quality of life.