Differing risk factors for new onset and recurrent gestational diabetes mellitus in multipara women: a cohort study

Table 3 Combined effect of risk factors on prevalence of recurrent GDM

	Recurrent GDM, n(%)	OR(95% CI)
GDM history	204 (44.44)	1
GDM history + one risk factor^a	152 (58.02)	1.73 (1.27–2.35)
GDM history + two risk factor or more^a	67 (78.82)	4.65 (2.68–8.08)
GDM history + FBG ≥ 5.15 mmol/L in early pregnancy (≥75%)	133 (65.84)	2.09 (1.50–2.91)
GDM history + PPBMI≥25 kg/m²	121 (67.22)	2.20 (1.55–3.12)
GDM history + Maternal birthweight≥4000 g	37 (64.91)	1.74 (0.99–3.05)

GDM gestational diabetes, FBG fasting blood glucose, PPBMI pre-pregnancy BMI
^aRisk factors included were higher FBG in early pregnancy (≥75%), PPBMI≥25 kg/m², and Maternal birthweight≥4000 g

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