Study design and Ethical Approval
Sampling was composed by 496 women attended at the Obstetric Center of
the University Hospital Dr. Miguel Riet CorrĂȘa Jr. in the city of Rio
Grande, Southern Brazil, between . All subjects (parturients) provided a
written informed consent for participation in the study.
Sociodemographic, obstetrical and gynecological data were obtained by
applying a self reported questionnaire. The present work was approved by
the Research Ethics Committee at the Health Area (CEPAS) of the Federal
University of Rio Grande-FURG (protocol number 54/2011), RS-Brazil.