U.S., Sept. 29 -- ClinicalTrials.gov registry received information related to the study (NCT07844499) titled 'Labor Characteristics and Maternal-Infant Outcomes in Preterm Primiparous Women' on Sept. 18.

Brief Summary: This retrospective observational study evaluates labor characteristics in primiparous women with spontaneous preterm birth at different gestational ages and examines their associations with maternal and neonatal outcomes. Medical records of women who delivered at Shanghai Jiading District Maternity and Child Health Care Hospital between January 1, 2020, and December 31, 2025, are reviewed.

Participants are classified according to gestational age at delivery into very preterm (28 to 31+6 weeks), moderate preterm (32 to 33+6 ...