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Table 2 Proportions (SE) and unadjusted OR (95% CI) of spontaneous abortions and stillbirths according to maternal anthropometry – Brazil, DHS/2006

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

Maternal anthropometry

n

Spontaneous abortions

Stillbirths

Total deaths

% ± (SE)

Unadjusted OR (95%CI)

% ± (SE)

Unadjusted OR (95%CI)

% ± (SE)

Unadjusted OR (95%CI)

Maternal BMI (Kg/m 2 )

  Underweight (<18.5)

251

4.5 (1.7)

0.55 (0.25-1.22)

0.1 (0.1)

0.08 (0.01-0.63)*

4.6 (1.7)

0.49 (0.22-1.06)

  Normal (18.5-24.9)

3,302

7.8 (0.8)

1.00

1.2 (0.3)

1.00

9.0 (0.8)

1.00

  Overweight (25–29.9)

1,645

7.4 (1.3)

0.94 (0.63-1.41)

1.4 (0.5)

1.10 (0.44-2.79)

8.6 (1.3)

0.96 (0.67-1.56)

  Obese 1 (≥ 30 -34.99)

625

6.6 (1.6)

0.84 (0.49-1.44)

2.2 (0.9)

1.83 (0.72-4.67)

8.7 (1.8)

0.97 (0.60-1.56)

  Obese 2–3 (≥ 35)

359

14.3 (3.1)

1.96 (1.16-3.30)*

3.4 (2.4)

2.81 (0.60-13.22)

17.1 (2.8)

2.10 (1.36-3.25)*

Maternal BMI (per 1 Kg/m 2 )

6,182

-

1.03 (1.00-1.07)

-

1.07 (1.00-1.14)*

-

1.04 (1.01-1.07)*

Maternal WC (cm)

  Normal (< 80)

2,782

7.4 (0.8)

1.00

0.9 (0.3)

1.00

8.3 (0.9)

1.00

  Overweight (80–87.9)

1,457

7.9 (1.2)

1.06 (0.71-1.60)

1.3 (0.6)

1.41 (0.48-4.23)

9.1 (1.3)

1.10 (0.75-1.60)

  Obese (≥ 88)

1,758

8.2 (1.3)

1.10 (0.74-1.63)

2.4 (0.6)

2.61 (1.13-6.04)*

10.2 (1.3)

1.26 (0.90-1.75)

Maternal WC (per 1 cm)

5,997

-

1.01 (1.00-1.03)

-

1.03 (1.00-1.06)

-

1.02 (1.00-1.03)*

Maternal WHR

  1st quartile

1,494

6.6 (1.0)

1.00

0.8 (0.4)

1.00

7.4 (1.0)

1.00

  2nd quartile

1,495

8.1 (1.3)

1.25 (0.78-1.98)

0.9 (0.4)

1.09 (0.30-3.92)

8.9 (1.3)

1.23 (0.80-1.90)

  3rd quartile

1,490

8.0 (1.2)

1.23 (0.79-1.93)

1.3 (0.5)

1.53 (0.48-4.88)

9.2 (1.3)

1.27 (0.84-1.93)

  4th quartile

1,494

8.4 (1.5)

1.30 (0.80-2.12)

2.8 (0.8)

3.42 (1.15-10.13)*

10.9 (1.5)

1.55 (1.02-2.35)*

Maternal WHR (per 0.1)

5,973

-

1.19 (0.94-1.51)

-

1.78 (1.13-2.81)*

-

1.29 (1.06-1.55)*

  1. *p < 0.05; BMI Body Mass Index, WC Waist Circumference, WHR Waist-to-Height Ratio, OR Odds Ratio, SE Standard Error, 95%CI 95% Confidence Interval.