Table 1

Maternal characteristics, delivery details and birth outcomes in relation to dengue status, Brazil, 2006–2012

CharacteristicsNotified with confirmed dengue in pregnancyWithout dengue notification
n (%)n (%)
Age of the mother (years)
 <204499 (25.5)4 384 159 (26.2)
 20–3511 981 (67.8)11 042 342 (66.0)
 >351193 (6.7)1 293 171 (7.8)
 Missing655 (0.0)
Maternal education
 Less than 3 years1065 (6.1)1 358 815 (8.3)
 4–7 years4661 (27.0)4 592 979 (28.1)
 More than 8 years11 578 (66.9)10 399 703 (63.6)
 Missing369 (2.1)368 830 (2.2)
Marital status
 Single/widow/divorced11 518 (66.1)9 660 306 (58.7)
 Married/union5899 (33.9)6 797 658 (41.3)
 Missing256 (1.4)262 363 (1.6)
Numbers of prenatal visits
 Inadequate (less than seven times)6991 (39.9)6 817 679 (41.2)
 Adequate (seven or more times)10 515 (60.1)9 712 338 (58.8)
 Missing167 (0.9)190 310 (1.1)
Delivery
 Vaginal8332 (47.2)8 383 714 (50.2)
 C-section9320 (52.8)8 307 072 (49.8)
 Missing21 (0.1)29 541 (0.2)
Gestational age in the delivery
 Less than 22 weeks17 (0.1)8844 (0.0)
 22–27 weeks68 (0.4)58 760 (0.4)
 28–31 weeks147 (0.8)112 407 (0.7)
 32–36 weeks1157 (6.7)1 011 633 (6.1)
 Total preterm birth1389 (8.0)1 191 644 (7.2)
 More than 37 weeks15 994 (92.0)15 215 440 (92.8)
 Missing290 (1.6)313 243 (1.9)
Birth weight
 ≥300012 171 (69.1)11 659 487 (69.9)
 3000–25003973 (22.5)3 816 201 (22.9)
 Total low birth weight1484 (8.4)15 475 688 (7.2)
 1500–25001258 (7.1)1 026 248 (6.1)
 <1500226 (1.3)178 643 (1.1)
 Missing38 (0.2)39 748 (0.2)
Small for gestational age (10th centile)*
 Normal3681 (91.7)3 289 125 (92.0)
 Small331 (8.2)287 173 (8.0)
 Data not collected13 661 (77.3)13 144 029 (78.6)
  • *Data available only in 2011 and 2012.

  • †% of each category without the missing value.