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Qualidade de vida e psicopatologia. Contributos para a validação do SCL-90 numa amostra clínica de adultos portugueses.
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Abstract(s)
A presente investigação enquadrou-se num projeto mais alargado de validação do Symptoms Checklist 90 (SCL-90) para a população adulta portuguesa, tendo como objetivo geral estudar a relação entre psicopatologia e a qualidade de vida. Para tal, a investigação foi dividida em três estudos. O primeiro focou-se na fase final da adaptação linguística e cultural do SCL-90. O segundo, avaliou a fiabilidade e a validade convergente e divergente do instrumento. O terceiro estudo avaliou a perceção da qualidade de vida nos indivíduos com diagnóstico de perturbação psicológica.
O Estudo 1 é de tipo qualitativo e centrou-se na realização de um grupo focal, composto por finalistas de Mestrado em Psicologia Clínica. O objetivo foi discutir um conjunto selecionado de itens para a versão final do SCL-90. Os Estudos 2 e 3, são de tipo quantitativo, observacional e transversal, envolveram uma amostra clínica de adultos portugueses, com diagnóstico de perturbação psicológica, recrutados na Unidade Local de Saúde de São José, em Lisboa. O Estudo 2 focou-se na análise da consistência interna do SCL-90, bem como na sua validade convergente com a Perceived Stress Scale-10 (PSS-10) e na validade divergente com o Mental Health Inventory (MHI-38) e o World Health Organization Quality of Life-Bref (WHOQOL-Bref). O Estudo 3 centrou-se na comparação da perceção de qualidade de vida, em função dos diagnósticos clínicos e de características sociodemográficas.
Os resultados do Estudo 1 contribuíram para a versão final da adaptação linguística e cultural do SCL-90 para a população adulta portuguesa. O Estudo 2 disponibilizou dados preliminares acerca da qualidade psicométrica do instrumento, onde confirmou a fiabilidade interna do SCL-90 e a sua validade convergente (PSS-10) e divergente (MHI-38 e WHOQOL-Bref), indicando que uma maior sintomatologia está associada a níveis mais elevados de stresse e a menor bem-estar. O Estudo 3 contribuiu para compreender a relação entre a psicopatologia e a perceção da qualidade de vida, revelando diferenças significativas de género e entre grupos clínicos.
This research was part of a broader project to validate the Symptoms Checklist 90 (SCL-90) for the Portuguese adult population, with the overall objective of studying the relationship between psychopathology and quality of life. To this end, the research was divided into three studies. The first focused on the final stage of linguistic and cultural adaptation of the SCL-90. The second evaluated the reliability and convergent and divergent validity of the instrument. The third study evaluated the perception of quality of life in individuals diagnosed with psychological disorders. Study 1 is qualitative and focused on conducting a focus group composed of final-year Master's students in Clinical Psychology. The objective was to discuss a selected set of items for the final version of the SCL-90. Studies 2 and 3 are quantitative, observational, and cross-sectional, involving a clinical sample of Portuguese participants diagnosed with psychological disorders, recruited at the São José Local Health Unit in Lisbon. Study 2 focused on analyzing the internal consistency of the SCL-90, as well as its convergent validity with the Perceived Stress Scale-10 (PSS-10) and its divergent validity with the Mental Health Inventory (MHI-38) and the World Health Organization Quality of Life-Bref (WHOQOL-Bref). Study 3 focused on comparing perceptions of quality of life based on clinical diagnoses and sociodemographic characteristics. The results of Study 1 contributed to the final version of the linguistic and cultural adaptation of the SCL-90 for the Portuguese population. Study 2 provided preliminary data on the psychometric quality of the instrument, confirming the internal reliability of the SCL-90 and its convergent (PSS-10) and divergent (MHI-38 and WHOQOL-Bref) validity, indicating that greater symptomatology is associated with higher levels of stress and lower well-being. Study 3 contributed to understanding the relationship between psychopathology and the perception of quality of life, revealing significant differences between genders and clinical groups.
This research was part of a broader project to validate the Symptoms Checklist 90 (SCL-90) for the Portuguese adult population, with the overall objective of studying the relationship between psychopathology and quality of life. To this end, the research was divided into three studies. The first focused on the final stage of linguistic and cultural adaptation of the SCL-90. The second evaluated the reliability and convergent and divergent validity of the instrument. The third study evaluated the perception of quality of life in individuals diagnosed with psychological disorders. Study 1 is qualitative and focused on conducting a focus group composed of final-year Master's students in Clinical Psychology. The objective was to discuss a selected set of items for the final version of the SCL-90. Studies 2 and 3 are quantitative, observational, and cross-sectional, involving a clinical sample of Portuguese participants diagnosed with psychological disorders, recruited at the São José Local Health Unit in Lisbon. Study 2 focused on analyzing the internal consistency of the SCL-90, as well as its convergent validity with the Perceived Stress Scale-10 (PSS-10) and its divergent validity with the Mental Health Inventory (MHI-38) and the World Health Organization Quality of Life-Bref (WHOQOL-Bref). Study 3 focused on comparing perceptions of quality of life based on clinical diagnoses and sociodemographic characteristics. The results of Study 1 contributed to the final version of the linguistic and cultural adaptation of the SCL-90 for the Portuguese population. Study 2 provided preliminary data on the psychometric quality of the instrument, confirming the internal reliability of the SCL-90 and its convergent (PSS-10) and divergent (MHI-38 and WHOQOL-Bref) validity, indicating that greater symptomatology is associated with higher levels of stress and lower well-being. Study 3 contributed to understanding the relationship between psychopathology and the perception of quality of life, revealing significant differences between genders and clinical groups.
Description
Dissertação de Mestrado realizada sob a orientação do Prof. Doutor Miguel Trigo, apresentada no ISPA – Instituto Universitário para obtenção de grau de Mestre na especialidade de Psicologia Clínica
Keywords
Questionário de 90 Sintomas (SCL-90) Psicopatologia Qualidade de vida Validade psicométrica Saúde mental Symptom Checklist-90 (SCL-90) Psychopathology Quality of life Psychometric validity Mental health.