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. 2019 Oct:156:107828.
doi: 10.1016/j.diabres.2019.107828. Epub 2019 Aug 28.

Effects of obesity and a history of gestational diabetes on the risk of postpartum diabetes and hyperglycemia in Chinese women: Obesity, GDM and diabetes risk

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Free PMC article

Effects of obesity and a history of gestational diabetes on the risk of postpartum diabetes and hyperglycemia in Chinese women: Obesity, GDM and diabetes risk

Yuxin Fan et al. Diabetes Res Clin Pract. 2019 Oct.
Free PMC article

Abstract

Objective: To evaluate the independent or combined effects of gestational diabetes (GDM) and pre-pregnancy and postpartum BMI on the odds of postpartum diabetes and hyperglycemia.

Methods: The study samples included 1263 women with prior GDM and 705 women without GDM. Postpartum 1-7 years diabetes was diagnosed by the standard oral glucose tolerance test.

Results: The multivariable-adjusted odds ratios among women with prior GDM, compared with those without it, were 7.52 for diabetes and 2.27 for hyperglycemia. The multivariable-adjusted odds ratios at different postpartum BMI levels (<24, 24-27.9, and ≥ 28 kg/m2) were 1.00, 2.80, and 8.08 for diabetes (Ptrend < 0.001), and 1.00, 2.10, and 4.42 for hyperglycemia (Ptrend < 0.001), respectively. Women with high body fat (≥31.9%) or abdominal obesity (≥85 cm) had a 2.7-6.9-fold higher odds ratio for diabetes or hyperglycemia. Women with both obesity and prior GDM had the highest risk of diabetes or hyperglycemia compared with non-obese women without GDM. Non-obese women with prior GDM had the same risk of diabetes and hyperglycemia as non-GDM women with obesity. When using Cox regression models, the results were very close to those using logistic regression models.

Conclusions: Maternal prior GDM and pre-pregnancy or postpartum obesity contribute equally to postpartum diabetes and hyperglycemia risk.

Keywords: BMI; Diabetes risks; Gestational diabetes.

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Conflict of interest statement

Disclosure: The authors have no competing interests in this article.

Duality of interest

The authors have no competing interests in this article.

Figures

Figure 1.
Figure 1.
The cumulative incidence curve of type 2 diabetes (A) and hyperglycemia (B) according to combined effects of maternal GDM and obesity status. Adjusted for age, education, family income, family history of diabetes, current smoking, passive smoking, current alcohol drinking, leisure-time physical activity, sleeping time, dietary fiber, sweetened beverage drinking, energy intakes of fat, protein, and carbohydrate. GDM, gestational diabetes mellitus.

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