title: Predictive factors of type 2 diabetes mellitus remission following bariatric surgery: a meta-analysis.
abstract: BACKGROUND
  Although a few studies have been reported on predictive factors of postoperative diabetes remission, the conclusions remain inconsistent. This meta-analysis aimed to assess the preoperative clinical factors for type 2 diabetes mellitus (T2DM) remission after bariatric surgery.
  
  
  METHODS
  The Cochrane Library, PubMed, MEDLINE, Embase, and CINAHL databases were searched. All human studies published in English between 1 January 1992 and 1 September 2013 reporting on the parameters of interest were included.
  
  
  RESULTS
  In total, 15 studies involving 1,753 bariatric surgery patients were selected. Analyses were performed separately for the parameters of interest. T2DM remission was observed to be negatively correlated with age, diabetes duration, insulin use, and HbA1c levels. Baseline body mass index (BMI) and C-peptide levels were positively associated with the remission rate in Asian patients. However, there was no significant association between gender and remission rate.
  
  
  CONCLUSIONS
  Patients with younger age, short diabetes duration, better glucose control, and better β cell function were more likely to achieve T2DM remission after bariatric surgery. However, further randomized controlled trials with uniform remission criteria should be conducted to provide more reliable evidence.
authors.affiliation: Department of Endocrinology Medicine, Lianyungang First People's Hospital, Affiliated Hospital of Xuzhou Medical College, Tongguan North Road 182, Lianyungang City, Jiangsu Province, 222000, China, nfmwangguofeng@126.com.
authors.forename: Guo-Feng
authors.initials: GF
authors.lastname: Wang
authors.forename: Yong-Xin
authors.initials: YX
authors.lastname: Yan
authors.forename: Ning
authors.initials: N
authors.lastname: Xu
authors.forename: Dong
authors.initials: D
authors.lastname: Yin
authors.forename: Yuan
authors.initials: Y
authors.lastname: Hui
authors.forename: Ji-Ping
authors.initials: JP
authors.lastname: Zhang
authors.forename: Guan-Jun
authors.initials: GJ
authors.lastname: Han
authors.forename: Ning
authors.initials: N
authors.lastname: Ma
authors.forename: Yan
authors.initials: Y
authors.lastname: Wu
authors.forename: Jing-Zi
authors.initials: JZ
authors.lastname: Xu
authors.forename: Tao
authors.initials: T
authors.lastname: Yang
mesh_terms: D000328:Adult; D000367:Age Factors; D050110:Bariatric Surgery; D001786:Blood Glucose / Q000032:analysis; D003924:Diabetes Mellitus, Type 2 / Q000097:blood / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012074:Remission Induction; D013997:Time Factors
chemical_list: D001786:Blood Glucose
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