Relationship between threatened miscarriage and gestational diabetes mellitus

Table 5 Association between the severity of maternal hyperglycemia and threatened miscarriage: Multinomial logistic regression

	Normal (n = 840)	Borderline GDM (n = 480)	GDM (n = 247)	OR (95% CI)				Adjusted OR (95% CI)
				Normal vs GDM	p	Borderline GDM vs GDM	p	Normal vs GDM	p	Borderline GDM vs GDM	p
Threatened miscarriage					0.002		0.044		0.003		0.034
Negative	719 (85.6)	424 (88.3)	230 (93.1)	ref		ref		ref		ref
Positive	121 (14.4)	56 (11.7)	17 (6.9)	0.44 (0.26–0.75)		0.56 (0.32–0.99)		0.35 (0.17–0.70)		0.46 (0.22–0.94)

Statistical analyses were performed by univariable and multivariable logistic regression
The data were adjusted for maternal age (< 35 years, ≥35 years), parity, history of prior GDM, pre-pregnancy BMI, progesterone therapy, and insulin therapy

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