title: Unplanned pregnancy and risk of maternal depression: secondary data analysis from a prospective pregnancy cohort.
abstract: to evaluate the relationship between unplanned pregnancy (UP), a common problem in high and low income countries and maternal depression (MD).
  
  
  
  Secondary analysis of data from a prospective cohort study with pregnant women recruited from 10 primary care clinics of the public sector in São Paulo, Brazil. Participants were questioned about pregnancy intention at 20-30 weeks of gestation. The Self Report Questionnaire score >7 was used to evaluated the presence of depression during pregnancy and 11 months after childbirth. Four groups of MD were defined: never; antenatal only; postnatal only; persistent (both antenatal/postnatal). Multinomial logistic regression was used to assess the relationship between UP and MD, controlling for confounding.
  
  
  
  Data were analysed for 701 at the postpartum period. Five hundred and sixty-two (67.8%) women did not plan the pregnancy. Women with UP had 2.5 more risk of being depressed during both assessments (during pregnancy and postpartum) when compared to women with a planned pregnancy (RR: 2.5; 95% CI: 1.47:4.30). In the adjusted models, women with UP were significantly more likely to have persistent depression (RR: 2.3; 95% CI: 1.2:4.3).
  
  
  
  UP is an independent risk factor for persistent depression, but not for postpartum depression.
authors.affiliation: a Department of Preventive Medicine , University of São Paulo , São Paulo , Brazil.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Faisal-Cury
authors.affiliation: a Department of Preventive Medicine , University of São Paulo , São Paulo , Brazil.
authors.forename: Paulo Rossi
authors.initials: PR
authors.lastname: Menezes
authors.affiliation: a Department of Preventive Medicine , University of São Paulo , São Paulo , Brazil.
authors.forename: Julieta
authors.initials: J
authors.lastname: Quayle
authors.affiliation: a Department of Preventive Medicine , University of São Paulo , São Paulo , Brazil.
authors.forename: Alicia
authors.initials: A
authors.lastname: Matijasevich
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil / Q000453:epidemiology; D019052:Depression, Postpartum / Q000453:epidemiology; D003866:Depressive Disorder / Q000453:epidemiology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D049168:Pregnancy, Unplanned / Q000523:psychology*; D011446:Prospective Studies; D055815:Young Adult
keywords: Pregnancy intention; perinatal depression; postpartum depression; unplanned pregnancy