Maternal obesity and fetal deaths: results from the Brazilian cross-sectional demographic health survey, 2006

Table 3 Adjusted OR (95% CI) of spontaneous abortions and stillbirths according to maternal anthropometry – Brazil, DHS/2006

Maternal anthropometry	Spontaneous abortions	Stillbirths	Total deaths
Maternal anthropometry	Adjusted^aOR (95%CI)	Adjusted^aOR (95%CI)	Adjusted^aOR (95%CI)
Maternal BMI (Kg/m ² )
Underweight (<18.5)	0.44 (0.19-1.02)	0.06 (0.01-0.48)^*	0.37 (0.16-0.83)
Normal (18.5-24.9)	1.00	1.00	1.00
Overweight (25–29.9)	1.02 (0.64-1.64)	1.07 (0.43-2.67)	1.04 (0.68-1.59)
Obese 1 (≥ 30 -34.99)	1.14 (0.63-2.05)	2.16 (0.82-5.73)	1.29 (0.76-2.17)
Obese 2–3 (≥ 35)	2.49 (1.45-4.26)^*	2.51 (0.46-13.74)	2.54 (1.49-4.31)^*
Maternal BMI (per 1 Kg/m ² )	1.05 (1.01-1.08)^*	1.06 (1.00-1.13)	1.05 (1.02-1.08)^*
Maternal WC (cm)
Normal (< 80)	1.00	1.00	1.00
Overweight (80–87.9)	0.91 (0.58-1.43)	1.32 (0.48-3.67)	0.96 (0.64-1.46)
Obese (≥ 88)	1.30 (0.80-2.10)	2.91 (1.32-6.44)^*	1.51 (1.00-2.31)
Maternal WC (per 1 cm)	1.02 (1.00-1.03)^*	1.03 (1.00-1.06)	1.02 (1.01-1.04)^*
Maternal WHR
1st quartile	1.00	1.00	1.00
2nd quartile	0.98 (0.59-1.64)	0.89 (0.25-3.21)	0.97 (0.61-1.54)
3rd quartile	1.18 (0.73-1.92)	1.40 (0.48-4.12)	1.21 (0.78-1.89)
4th quartile	1.51 (0.89-2.59)	3.17 (1.17-8.56)^*	1.75 (1.09-2.81)^*
Maternal WHR (per 0.1)	1.32 (1.03-1.69)^*	1.65 (1.06-2.57)^*	1.39 (1.12-1.73)^*

Notes: ^aAdjusted for maternal age group, parity, skin color, household income, maternal education and maternal smoking status. BMI Body Mass Index, WC Waist Circumference, WHR Waist-to-Height Ratio, OR Odds Ratio, SE Standard Error, 95%CI 95% Confidence Interval; ^*p < 0.05.

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