Gastric Bypass, Gastric Band or Sleeve Gastrectomy to Treat Obesity

Obesity is an increasing health problem in the United Kingdom (UK) and is predicted to worsen. In the UK and worldwide the three most commonly performed operations are laparoscopic adjustable gastric banding (\'BAND surgery\'), laparoscopic gastric bypass (\'BYPASS\') and laparoscopic sleeve gastrectomy (\'SLEEVE\'). All lead to weight loss, but they are associated with different problems. This study (BYBANDSLEEVE) is a randomised trial with a target recruitment of 1341 patients in twelve hospitals and its aim is to compare the effectiveness, cost effectiveness and acceptability of BAND, BYPASS and SLEEVE surgery.