Fig. 1
From: Prevalence of congenital microcephaly and its risk factors in an area at risk of Zika outbreaks
Pernatal factors associated with microcephaly. OR, odds ratio; HDP, hypertensive disorders of pregnancy; GDM, Gestational diabetes mellitus; HBV, Hepatitis B Virus. aNon-microcephaly (head circumference Z-score ≥ − 3.0) as the reference group. bIn models for the associations with maternal age, GDM, HDP, and parity, these characteristics entered the model simultaneously and were mutually adjusted for each other. cAnalyzed only among all births born in two campuses of Guangzhou Women and Children’s Medical Center. dAdjusted for maternal age, hypertensive disorders of pregnancy, and gestational diabetes mellitus and parity, year of birth, and place of birth. eAdjusted for maternal age, hypertensive disorders of pregnancy, and gestational diabetes mellitus, parity and sex of newborn.