Eight-Year Trends in the Effect of the Great East Japan Earthquake on Obstetrics Outcomes: A Study from the Fukushima Health Management Survey

Information regarding the longitudinal effects of natural/environmental disasters on obstetrics outcomes is limited. This study aimed to analyze changes in over 8 years after Great East Japan Earthquake and Fukushima power plant accident. We used data from first Pregnancy Birth Survey by prefectural government, launched 2011. compared year divided Prefecture into six districts based administrative districts. Longitudinal occurrence preterm birth before 37 gestational weeks, low weight, anomalies newborns were accessed using Mantel–Haenszel test for trends all Overall, 57,537 participants included. In years, maternal age, conception rate sterility treatment, cesarean section delivery incidence increased. Although significant differences observed weight among districts, there was no trend birth, Prefecture. The accident associated with increased but had adverse outcomes.