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Weight loss in adults following bariatric surgery, a systematic review of preoperative behavioural predictors.

Authors
  • Kourounis, Georgios1, 2, 3
  • Kong, Chia Yew1, 2, 4
  • Logue, Jennifer5
  • Gibson, Simon3
  • 1 College of Medicine & Veterinary Medicine, University of Edinburgh, Edinburgh, UK.
  • 2 College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK.
  • 3 Department of General Surgery, Queen Elizabeth University Hospital, Glasgow, UK.
  • 4 Department of General Surgery, Monklands Hospital, Airdrie, UK.
  • 5 Faculty of Health and Medicine, Lancaster University, Lancaster, UK.
Type
Published Article
Journal
Clinical obesity
Publication Date
Oct 01, 2020
Volume
10
Issue
5
Identifiers
DOI: 10.1111/cob.12392
PMID: 32691530
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Bariatric surgery is effective in treating obesity in many cases, yet as many as 50% of patients may not achieve the desired weight reduction. Preoperative modifiable behavioural factors could help patient selection and intervention design to improve outcomes. Medline, EMBASE, Cochrane Library and PsychINFO were searched to identify studies published between 1 January 2008 and 14 February 2019 reporting on preoperative modifiable behavioural factors associated with postoperative weight loss, with minimum 2 years follow-up. A total of 6888 articles were screened, 34 met the inclusion criteria. Maladaptive eating behaviours (MEB), preoperative weight loss (PWL), and tobacco use were reported 21, 18, and 3 times respectively. Physical activity and substance abuse were each reported once. Most articles on PWL (72.2%) and MEB (52.4%) reported no association. Positive associations were reported in 22.2% and 14.3% of articles for PWL and MEB respectively. Negative associations were reported in 5.6% and 33.3% of articles for PWL and MEB, respectively. Marked heterogeneity in outcome reporting hindered quantitative synthesis. The current paucity of evidence amenable to synthesis leads to ongoing uncertainty regarding the size and direction of association between PWL and MEB with outcomes following bariatric surgery. Long-term studies with common reporting of outcomes are needed. © 2020 The Authors. Clinical Obesity published by John Wiley & Sons Ltd on behalf of World Obesity Federation.

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