Overweight/obesity and other predictors of gestational diabetes among Aboriginal and non-Aboriginal women in Western Australia

Marwan Awad Ahmed; Helen D. Bailey; Gavin Pereira; Scott W. White; Matthew J.L. Hare; Kingsley Wong; Rhonda Marriott; Carrington C.J. Shepherd

doi:10.1016/j.pmedr.2023.102444

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Overweight/obesity and other predictors of gestational diabetes among Aboriginal and non-Aboriginal women in Western Australia

Journal article

Open access

Peer reviewed

Overweight/obesity and other predictors of gestational diabetes among Aboriginal and non-Aboriginal women in Western Australia

Marwan Awad Ahmed, Helen D. Bailey, Gavin Pereira, Scott W. White, Matthew J.L. Hare, Kingsley Wong, Rhonda Marriott and Carrington C.J. Shepherd

Preventive medicine reports, Vol.36, 102444

2023

DOI: https://doi.org/10.1016/j.pmedr.2023.102444

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Abstract

Aboriginal

Body mass index

Gestational diabetes

Indigenous Australians

Obesity

Overweight

Population attributable fraction

This population-based study investigated the association of BMI and other predictors with gestational diabetes mellitus (GDM) among Australian Aboriginal and non-Aboriginal mothers. We conducted a state-wide retrospective cohort study that included all singleton births in Western Australia (n = 134,552) between 2012 and 2015 using population health datasets linked by the Western Australian Data Linkage Branch. Associations between GDM and its predictors were estimated as adjusted relative risks (aRRs) from multivariable generalised linear models. Adjusted ratio of relative risks (aRRRs) compared RRs in Aboriginal and non-Aboriginal mothers. Adjusted population attributable fractions estimated the contribution of overweight/obesity to GDM burden, and adjusted predicted probabilities for GDM were plotted against BMI levels. The following predictors had stronger associations with GDM in Aboriginal, compared to non-Aboriginal, mothers: maternal obesity (aRR [95% CI] 3.16 [2.54–3.93]; aRRR 1.57 [1.26–1.94]), previous LGA (aRR 1.70 [1.37–2.12]; aRRR 1.41 [1.13–1.76]) and previous macrosomia (birthweight ≥ 4 kg) (aRR 1.55 [1.24–1.94]; aRRR 1.53 [1.22–1.91]). 46.1% (95% CI: 36.6–54.1) of GDM cases in Aboriginal women (23.3% in non-Aboriginal mothers, 95% CI: 21.6–25.1) were attributed to overweight/obesity. Compared to non-Aboriginal mothers, adjusted GDM probabilities were higher at all BMI levels and showed greater increase with BMI. Overweight/obesity is a key driver of GDM among Aboriginal women. Association between BMI and GDM is stronger in Aboriginal, compared to non-Aboriginal, women especially at higher BMI.

Details

Title: Overweight/obesity and other predictors of gestational diabetes among Aboriginal and non-Aboriginal women in Western Australia
Authors/Creators: Marwan Awad Ahmed - The Kids Research Institute Australia
Helen D. Bailey - The Kids Research Institute Australia
Gavin Pereira - Curtin University
Scott W. White - King Edward Memorial Hospital
Matthew J.L. Hare - Royal Darwin Hospital
Kingsley Wong - The Kids Research Institute Australia
Rhonda Marriott - Murdoch University, Ngangk Yira Institute for Change
Carrington C.J. Shepherd - Centre for Global Health Research
Publication Details: Preventive medicine reports, Vol.36, 102444
Publisher: Elsevier Inc
Identifiers: 991005609154107891
Murdoch Affiliation: Ngangk Yira Institute for Change
Language: English
Resource Type: Journal article

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