Table 3

Number of cases with dengue during pregnancy (N) and OR for the association dengue during pregnancy by severity of disease and adverse birth outcomes (preterm birth, low birth weight and small for gestational)

OutcomeDengue feverComplicated dengueHaemorrhagic fever
Preterm birth (<37 weeks) n=1 192 920
 N (%)12343012
 Crude OR (95% CI)1.1 (1.0 to 1.1)1.4 (0.9 to 1.9)2.4 (1.3 to 4.3)
 Adjusted OR (95% CI)1.1 (1.0 to 1.1)1.4 (0.9 to 2.0)2.4 (1.3 to 4.4)
Low birth weight (<2500 g) n=1 206 265
 N13273611
 Crude OR (95% CI)1.1 (1.1 to 1.2)1.6 (1.2 to 2.3)2.1 (1.1 to 4.0)
 Adjusted OR (95% CI)1.1 (1.1 to 1.2)1. 6 (1.1 to 2.3)2.1 (1.1 to 4.0)
Small for gestational age (10th centile) n=287 474
 N29461
 Crude OR (95% CI)1.0 (0.9 to 1.1)2.2 (0.9 to 5.1)2.0 (0.3 to 11.4)
 Adjusted OR (95% CI)1.0 (0.9 to 1.1)2.3 (1.0 to 5.3)2.1 (0.4 to 12.2)
  • Brazil, 2006–2012.

  • Adjusted for maternal age, education and marital status.