From: Prevalence of congenital microcephaly and its risk factors in an area at risk of Zika outbreaks
Characteristics | Mean (SD) | n (%) |
---|---|---|
Maternal age | 30.2 (4.7) | Â |
 < 35 years old |  | 39,019 (83.7) |
Primiparous | Â | 19,534 (41.9) |
Hypertensive disorders of pregnancy | Â | 1493 (3.2) |
Gestational diabetes | Â | 6787 (14.6) |
Maternal carrier of HBVa | Â | 2189 (7.5) |
Sex of newborns (Male) | Â | 24,927 (53.5) |
Gestational age at birth, weeks | 39.0 (1.5) | Â |
 Preterm birth |  | 2590 (5.6) |
Birth weight of newborns, kg | 3.2 (0.4) | Â |
Birth weight for gestational age of newborns, Z-scoreb | 0.0 (0.9) | Â |
 Small for gestational agec |  | 3265 (7.0) |
Head circumference of newborns, cm | 33.3 (1.3) | Â |
Head circumference of newborns, Z-scoreb | −0.3 (1.0) |  |
 < −3.0 |  | 154 (0.3) |
 ≥ −3.0 & < −2.0 |  | 1777 (3.8) |
BWHC Z-score differenced | −0.3 (0.8) |  |
 < −3.0 |  | 58 (0.1) |
 ≥ −3.0 & < −2.0 |  | 987 (2.1) |