Behavioural interventions appear to improve weight loss at 12 months after bariatric surgery .
Background Significant , sustained weight loss through conventional , non-surgical interventions is often unattainable for people with severe obesity ( e.g. BMI ≥40 or ≥35 kg/m2 with co-morbidities ) .
Bariatric surgery is effective in treating severe obesity , but surgery alone without additional behaviour change management may not result in optimum long-term weight loss and maintenance .
This systematic review and meta- analysis of r and omised controlled trials evaluated the effectiveness of lifestyle interventions before and /or after bariatric surgery .
Outcome reporting in bariatric surgery: an in-depth analysis to inform the development of a core outcome set, the BARIACT Study.
Outcome reporting in  bariatric surgery  needs a core outcome set ( COS ) , an agreed minimum set of outcomes reported in all studies of a particular condition . The aim of this study was to summarize outcome reporting in bariatric surgery to inform the development of a COS . Outcomes reported in r and omized controlled trials ( RCTs ) and large non-r and omized studies identified by a systematic review were listed verbatim and categorized into domains , scrutinizing the frequency of outcome reporting and uniformity of definitions . Ninety studies ( 39 RCTs ) identified 1,088 separate outcomes , grouped into nine domains with most ( n = 920 , 85 % ) reported only once . The largest outcome domain was ' surgical complications ' , and overall , 42 % of outcomes corresponded to a theme of ' adverse events ' . Only a quarter of outcomes were defined , and where provided definitions , which were often contradictory . Percentage of excess weight loss was the main study outcome in 49 studies , but nearly 40 % of weight loss outcomes were heterogeneous , thus not comparable . Outcomes of diverse bariatric operations focus largely on adverse events . Reporting is inconsistent and ill-defined , limiting interpretation and comparison of published studies . Thus , we propose and are developing a COS for the surgical treatment of severe and complex obesity
Behavioural interventions appear to improve weight loss at 12 months after bariatric surgery .
Background Significant , sustained weight loss through conventional , non-surgical interventions is often unattainable for people with severe obesity ( e.g. BMI ≥40 or ≥35 kg/m2 with co-morbidities ) .
Bariatric surgery is effective in treating severe obesity , but surgery alone without additional behaviour change management may not result in optimum long-term weight loss and maintenance .
This systematic review and meta- analysis of r and omised controlled trials evaluated the effectiveness of lifestyle interventions before and /or after bariatric surgery .