Factors of non-responsive or lost-to-follow-up Japanese mothers during the first year post partum following the Japan Environment and Children’s Study: a longitudinal cohort study

Abstract

ObjectivesWe examined the factors related to lost-to-follow-up of a birth cohort study during the first year after delivery.DesignLongitudinal cohort study.SettingQuestionnaires were provided by mail. Mothers answered the questionnaires about the...