Validity of pre and post-term birth rates based on the date of last menstrual period compared to early obstetric ultrasonography

• Main Authors: Maria Nilza Lima Medeiros (Author), Nádia Carenina Nunes Cavalcante (Author), Fabrício José Alencar Mesquita (Author), Rosângela Lucena Fernandes Batista (Author), Vanda Maria Ferreira Simões (Author), Ricardo de Carvalho Cavalli (Author), Viviane Cunha Cardoso (Author), Heloisa Bettiol (Author), Marco Antonio Barbieri (Author), Antônio Augusto Moura da Silva (Author)
• Format: Book
• Published: Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz, 2015-04-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

The aim of this study was to assess the validity of the last menstrual period (LMP) estimate in determining pre and post-term birth rates, in a prenatal cohort from two Brazilian cities, São Luís and Ribeirão Preto. Pregnant women with a single fetus and less than 20 weeks' gestation by obst...