Trends in Psychiatry and Psychotherapy
https://trends.org.br/article/doi/10.1590/2237-6089-2016-0056
Trends in Psychiatry and Psychotherapy
Original Article

A proposal for a new Brazilian six-item version of the Edinburgh Postnatal Depression Scale

Proposta para uma nova versão brasileira de seis itens da Escala de Depressão Pós-Parto de Edimburgo

Maicon Rodrigues Albuquerque; Humberto Corrêa; Tiago Castro e Couto; Wallace Santos; Marco Aurelio Romano-Silva; Leonor Maria Pacheco Santos

http://dx.doi.org/10.1590/2237-6089-2016-0056 Trends Psychiatry Psychother, vol.39, n1, p.29-33, 2017
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Abstract

Abstract Introduction: 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. Methods: 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. Results: 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. Conclusions: 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.

Keywords

Postpartum depression, affective symptoms, EPDS

Resumo

Resumo Introdução: A análise fatorial da Escala de Depressão Pós-Parto de Edimburgo (Edinburgh Postnatal Depression Scale, EPDS) poderia resultar em uma ferramenta de triagem mais curta e mais fácil de aplicar. Portanto, o objetivo deste estudo foi verificar e comparar as métricas de duas subescalas EPDS de 6 itens. Métodos: Administramos a EPDS a um total de 3.891 mulheres que deram à luz entre 1 e 3 meses antes da aplicação. Foram realizadas análises fatoriais confirmatórias e exploratórias e geradas curvas ROC (receiver-operating characteristics) para determinar, respectivamente, a validade do construto, o ajuste dos itens da escala aos dados, e os pontos de corte ideais para as versões curtas. Resultados: A escala de 6 itens previamente publicada não apresentou validade de construto para nossa amostra. No entanto, utilizamos a análise fatorial exploratória para derivar uma nova escala de 6 itens, que apresentou boa validade de construto. A área sob a curva ROC da nova escala de 6 itens foi 0,986, e o ponto de corte ideal foi ≥ 6. Conclusão: A nova escala de 6 itens possui propriedades psicométricas adequadas e valores de curva ROC semelhantes à versão de 10 itens e oferece um meio de reduzir o custo e o tempo necessário para administrar o instrumento.

Palavras-chave

Depressão pós-parto, sintomas afetivos, EPDS

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