title: A proposal for a new Brazilian six-item version of the Edinburgh Postnatal Depression Scale.
abstract: Factor analysis of the Edinburgh Postnatal Depression Scale (EPDS) could result in a shorter and easier to handle screening tool. Therefore, the aim of this study was to check and compare the metrics of two different 6-item EPDS subscales.
  We administered the EPDS to a total of 3,891 women who had given birth between 1 and 3 months previously. We conducted confirmatory and exploratory factor analyses and plotted receiver-operating characteristics (ROC) curves to, respectively, determine construct validity, scale items' fit to the data, and ideal cutoff scores for the short versions.
  A previously defined 6-item scale did not exhibit construct validity for our sample. Nevertheless, we used exploratory factor analysis to derive a new 6-item scale with very good construct validity. The area under the ROC curve of the new 6-item scale was 0.986 and the ideal cutoff score was ≥ 6.
  The new 6-item scale has adequate psychometric properties and similar ROC curve values to the10-item version and offers a means of reducing the cost and time taken to administer the instrument.
authors.affiliation: Departamento de Esportes, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.|Instituto Nacional de Ciência e Tecnologia em Medicina Molecular (INCT-MM), UFMG, Belo Horizonte, MG, Brazil.
authors.forename: Maicon Rodrigues
authors.initials: MR
authors.lastname: Albuquerque
authors.affiliation: Instituto Nacional de Ciência e Tecnologia em Medicina Molecular (INCT-MM), UFMG, Belo Horizonte, MG, Brazil.|Programa de Pós-Graduação em Medicina Molecular, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil.|Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil.
authors.forename: Humberto
authors.initials: H
authors.lastname: Corrêa
authors.affiliation: Programa de Pós-Graduação em Medicina Molecular, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil.
authors.forename: Tiago Castro E
authors.initials: TC
authors.lastname: Couto
authors.affiliation: Programa de Pós-Graduação em Saúde Coletiva, Universidade de Brasília (UnB), Brasília, DF, Brazil.
authors.forename: Wallace
authors.initials: W
authors.lastname: Santos
authors.affiliation: Instituto Nacional de Ciência e Tecnologia em Medicina Molecular (INCT-MM), UFMG, Belo Horizonte, MG, Brazil.|Programa de Pós-Graduação em Medicina Molecular, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil.|Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil.
authors.forename: Marco Aurelio
authors.initials: MA
authors.lastname: Romano-Silva
authors.affiliation: Programa de Pós-Graduação em Saúde Coletiva, Universidade de Brasília (UnB), Brasília, DF, Brazil.|Departamento de Saúde Coletiva, Universidade de Brasília (UnB), Brasília, DF, Brazil.
authors.forename: Leonor Maria Pacheco
authors.initials: LM
authors.lastname: Santos
mesh_terms: D001938:Brazil; D003430:Cross-Sectional Studies; D019052:Depression, Postpartum / Q000175:diagnosis*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D009035:Mothers / Q000523:psychology; D049590:Postpartum Period / Q000523:psychology; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D012372:ROC Curve; D013997:Time Factors; D055815:Young Adult