High Body Mass Index Is an Indicator of Maternal Hypothyroidism, Hypothyroxinemia, and Thyroid-Peroxidase Antibody Positivity during Early Pregnancy

Table 3

Multivariate logistic regression^a.

BMI (kg/m^2)	Adjusted OR (95% CI)
	TSH > 5.22 mIU/L^b	FT4 < 12.27 pmol/L^b	TPOAb > 34 IU/mL^c	TgAb > 115 IU/mL^d
<18.5	0.90 (0.59–1.35)	0.56 (0.31–1.00)	0.80 (0.59–1.09)	0.88 (0.68–1.13)
18.5–24.9	Ref	Ref	Ref	Ref
25.0–29.9	1.33 (0.93–1.91)	2.43 (1.74–3.40)	1.53 (1.19–1.96)	1.02 (0.80–1.30)
≥30.0	2.41 (1.16–4.99)	5.34 (2.85–10.02)	3.18 (1.86–5.44)	0.89 (0.45–1.76)

Ref: reference category.
^aMultivariate logistic regression was carried out in a stepwise manner. was considered as a significant difference.
^bAdjusted for age, gestational weeks, TPOAb, TgAb, and UIC (stepwise manner).
^cAdjusted for age, gestational weeks, UIC, and TgAb (stepwise manner).
^dAdjusted for age, gestational weeks, UIC, and TPOAb (enter manner).