Background Current methods for weight loss assessment after bariatric surgery do not meet
the high standards required to accurately judge patient outcome in a fair and evidence …

Background Percentage excess weight loss (% EWL) and percentage total weight loss (%
TWL) are used for reporting outcomes after bariatric surgery. However, they are not ideal for …

Background Percentile charts would be ideal for assessing sufficient weight loss in bariatric
surgery. They allow comparing individual results to the outcome of many others, at any …

Background Currently, there is no agreement on the best method to describe weight loss
(WL) after bariatric surgery. The aim of this study is to evaluate short-term outcomes using …

Background Weight loss after bariatric surgery is commonly reported as either a percentage
of initial body weight (% IBW) or 100% minus% IBW which is a percentage of total weight …

Background Criteria for bariatric weight loss success are numerous. Most of them are
arbitrary. None of them is evidence-based. Our objective was to determine their sensitivity …

Background Insight into the effects of gender and age on bariatric weight loss can be
disturbed by the well-known influence of initial body mass index (BMI) on excess weight loss …

Purpose Previous studies showed that patients with lower weight loss after bariatric surgery
could be identified based on early postoperative weight loss. However, these studies had …

Background The frequently used 35 kg/m 2 body mass index (BMI) and 50% excess weight
loss (% EWL) criteria are no longer adequate for defining the success of a bariatric or …

Percentage total weight loss (% TWL) might be better than percentage excess weight loss to
express weight loss in bariatric surgery. In this systematic review, performed according to the …