Prodromal Questionnaire: translation, adaptation to Portuguese and preliminary results in ultra-high risk individuals and first episode psychosis

Abstract

Objective: The Prodromal Questionnaire (PQ) is a 92-item self-report screening tool for individuals at ultra-high risk (UHR) to develop psychosis. This study aims to present the translation to Portuguese and preliminary results in UHR and first episode (FE) psychosis in a Portuguese sample. Methods: The PQ was translated from English to Portuguese by two bilingual researchers from the research program on early psychosis of the Instituto de Psiquiatria HCFMUSP, São Paulo, Brazil (ASAS -"Evaluation and Follow up of Adolescents and Young Adults in São Paulo") and back translated by two other researchers. The study participants (n = 11 ) were evaluated through the Portuguese version of the Prodromal Questionnaire (PQ) and SIPS. Results: The individuals at UHR (n = 7) presented a lower score than first episode patients (n = 4). The UHR mean scores and standard deviation on Portuguese version of the PQ were: 13.0 ± 10.0 points on positive symptoms subscale, and FE patients: 33.0 ± 10.0. Conclusion: The UHR and FE patients' of this study presented PQ scores similar to the ones found in the literature; what suggests that it is possible to use the PQ in Brazilian help-seeking individuals as a screening tool. RESUMOObjetivo: O Questionário Prodromal (PQ) é um instrumento de triagem e autorrelato com 92 itens para indivíduos com ultra-alto risco (UHR) para desenvolver psicose. Este estudo tem como objetivo apresentar a tradução desse questionário para português e seus resultados preliminares em uma amostra brasileira de UHR e primeiro episódio (FE) psicótico. Métodos: O PQ foi traduzido do inglês para o português por dois pesquisadores bilíngues do programa de pesquisa sobre psicose precoce do Instituto de Psiquiatria HCFMUSP, São Paulo, Brasil (ASAS "Avaliação e Acompanhamento de Adolescentes e Jovens Adultos em São Paulo") e retrotraduzido por dois outros pesquisadores. Os participantes (n = 11) do estudo foram avaliados por meio da versão em português do Questionário de Prodromal (PQ) e SIPS. Resultados: Os indivíduos com UHR (n = 7) apresentaram menor pontuação do que os pacientes de primeiro episódio (n = 4). Os escores médios e desvio-padrão dos Palavras-chave Ultra-alto risco, primeiro episódio psicótico, instrumento de rastreio.

Exacerbation of psychosis risk during the COVID-19 pandemic: The disproportionate impact on the lower income population

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Influence of migration on the thought process of individuals at ultra-high risk for psychosis

“…Demographic factors were obtained, and the Prodromal Questionnaire (PQ) was used as the screening instrument. 10 The PQ is a self-report questionnaire with 92 true/false items designed to collect data on prodromal symptoms of psychosis. Most items are similar to the Structured Interview for Prodromal Syndromes (SIPS) and the Schizotypal Personality Questionnaire.…”

Assessing self‐reported clinical high risk symptoms: The psychometric properties of the polish version of the prodromal questionnaire‐brief and a proposal for an alternative approach to scoring

“…The original 92‐item version was developed in 2005 to measure positive, negative, disorganization, and general symptoms of the prodromal state. Since then, the tool has been adapted for use among some European populations, like the Portuguese (Goncalves, Gordon, Martins, & Louza, 2012) and the Italians (Kotzalidis et al, 2017). It has also been modified into 21‐item (Loewy et al, 2011) and 16‐item versions (Kim et al, 2018; Lorenzo et al, 2018).…”