Epidemiology of perinatal depression in Portugal: categorical and dimensional approach.

Berta Rodrigues Maia, Mariana Marques, Sandra Bos, Ana Telma Pereira, Maria João Soares, José Valente, António Macedo, Maria Helena Azevedo


The aim of the present study was to estimate depressive disorder and symptomatology prevalence and incidence in perinatal period in a population-based sample. Three-hundred and eighty six Portuguese women (mean age=30.08 years, SD=4.21) were interviewed with the Diagnostic Interview for Genetic Studies and completed Beck Depression Inventory-II/BDI-II and Postpartum Depression Screening Scale/PDSS, in pregnancy and postpartum. OPCRIT polydiagnostic system generated ICD-10 and DSM-IV diagnoses. One-month prevalence in pregnancy was of 2.3%/ICD-10 and 1.3%/DSM-IV; in postpartum it was of 16.6% and 11.7%. Pregnancy incidence was of 0%/ICD-10 and .3%/DSM-IV and in postpartum of 7.5%/ ICD-10 and 4.9%/DSM-IV. Depression pregnancy point-prevalence found with BDI-II cutoffs ranged from 13.7% to 19.4% in pregnancy and from .8% to 13.0% in postpartum and with PDSS from 14.2% to 17.9% in pregnancy and from 3.9% to 12.7% in postpartum. In the same sample, different diagnostic systems generated different prevalence and incidence rates. Higher prevalence rates were found using self-reported questionnaires. ICD-10 generated higher prevalence and incidence rates than DSM-IV.

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