Obara T

No ORCID on file · 4 papers in corpus
observational 2026
Benzodiazepine exposure during early pregnancy and risk of miscarriage: dose-response, half-life classification, and individual agents
Archives of women's mental health ·doi:10.1007/s00737-026-01720-3

PURPOSE: To evaluate the association between benzodiazepine exposure during early pregnancy and the risk of miscarriage, with a focus on dose-response, half-life, and individual agents. METHODS: This nested case-control study was conducted…

observational 2025
Impact of maternal smoking and secondhand smoke exposure during singleton pregnancy on placental abruption: analysis of a prospective cohort study (the Japan Environment and Children's Study)
BMJ open ·doi:10.1136/bmjopen-2024-089499

OBJECTIVES: This study aimed to investigate the association and population-attributable fraction (PAF) of maternal smoking and secondhand smoke (SHS) exposure during pregnancy with placental abruption. DESIGN: Prospective cohort study. SE…

observational 2025
Perinatal Outcomes After the Use of Kampo Medicines Containing Ephedra During Pregnancy
Pharmacoepidemiology and drug safety ·doi:10.1002/pds.70251

PURPOSE: Japanese traditional (Kampo) medicines containing ephedra are used to relieve symptoms of the common cold during pregnancy. The risks associated with perinatal outcomes, however, remain unclear. Thus, we evaluated the risk of adver…

observational 2023
Establishment of the early prediction models of low-birth-weight reveals influential genetic and environmental factors: a prospective cohort study
BMC pregnancy and childbirth ·doi:10.1186/s12884-023-05919-5

BACKGROUND: Low birth weight (LBW) is a leading cause of neonatal morbidity and mortality, and increases various disease risks across life stages. Prediction models of LBW have been developed before, but have limitations including small sam…