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Cohort study on incidence of new-onset type 2 diabetes in patients after bariatric surgery and matched controls

Vahtera, Viiko; Pajarinen, Jukka; Kivimäki, Mika; Ervasti, Jenni; Pentti, Jaana; Stenholm, Sari; Vahtera, Jussi; (2024) Cohort study on incidence of new-onset type 2 diabetes in patients after bariatric surgery and matched controls. BJS , 111 (4) , Article znae105. 10.1093/bjs/znae105. Green open access

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Abstract

BACKGROUND: Metabolic bariatric surgery the reduces risk of new-onset type 2 diabetes in individuals with obesity, but it is unclear whether the benefit varies by sex, age, or socioeconomic status. The aim was to assess the risk of new-onset type 2 diabetes after metabolic bariatric surgery in these subgroups. METHODS: The Finnish Public Sector study, a follow-up study with matched controls nested in a large employee cohort, included patients without type 2 diabetes and with a diagnosis of obesity or self-reported BMI of at least 35 kg/m2. For each patient who had laparoscopic metabolic bariatric surgery (2008-2016), two propensity-score matched controls were selected. New-onset type 2 diabetes was ascertained from linked records from national health registries. RESULTS: The study included a total of 917 patients and 1811 matched controls with obesity. New-onset type 2 diabetes was diagnosed in 15 of the patients who had metabolic bariatric surgery (4.1 per 1000 person-years) and 164 controls (20.2 per 1000 person-years). The corresponding rate ratio (RR) was 0.20 (95% c.i. 0.12 to 0.35) and the rate difference (RD) was -16.1 (-19.8 to -12.3) per 1000 person-years. The risk reduction was more marked in individuals of low socioeconomic status (RR 0.10 (0.04 to 0.26) and RD -20.6 (-25.6 to -15.5) per 1000 person-years) than in those with higher socioeconomic status (RR 0.35 (0.18 to 0.66) and RD -11.5 (-16.9 to -6.0) per 1000 person-years) (Pinteraction = 0.017). No differences were observed between sexes or age groups. CONCLUSION: Metabolic bariatric surgery was associated with a reduced risk of new-onset type 2 diabetes in men and women and in all age groups. The greatest benefit was observed in individuals of low socioeconomic status.

Type: Article
Title: Cohort study on incidence of new-onset type 2 diabetes in patients after bariatric surgery and matched controls
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/bjs/znae105
Publisher version: http://dx.doi.org/10.1093/bjs/znae105
Language: English
Additional information: © The Author(s) 2024. Published by Oxford University Press on behalf of BJS Foundation Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.
Keywords: Humans, Diabetes Mellitus, Type 2, Male, Female, Bariatric Surgery, Middle Aged, Adult, Incidence, Finland, Case-Control Studies, Follow-Up Studies, Risk Factors, Obesity, Obesity, Morbid
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Division of Psychiatry
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Division of Psychiatry > Mental Health of Older People
URI: https://discovery.ucl.ac.uk/id/eprint/10191946
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