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Tradução, adaptação cultural e avaliação das propriedades psicométricas da escala de ansiedade de Hamilton numa amostra de pessoas adultas com doença mental da população portuguesa
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Authors
Advisor(s)
Abstract(s)
Enquadramento:
A temática da ansiedade está cada vez mais presente na sociedade atual,
em consequência do ritmo de vida mais stressante e face às expetativas elevadas de cada
um. Apesar de a ansiedade ser uma emoção que estimula a reação e funciona como alerta
para que a pessoa possa lidar com a ameaça e estimule a capacidade de realizar as atividades
exigidas no quotidiano, qua ndo esta se torna excessiva pode manifestar se de forma
negativa e tornar se patológica, por isso, é um problema muito relevante a nível mundial e
nacional. Existem várias escalas de avaliação de ansiedade validadas para Portugal, no
entanto a Escala de An siedade de Hamilton, instrumento muito usado a nível internacional,
não está validada, motivo pelo qual parece pertinente a realização deste estudo
Objetivos: Traduzir e adaptar culturalmente a Escala de Ansiedade de Hamilton para a
população portuguesa e avaliar as suas propriedades psicométricas.
Métodos: Estudo psicométrico, com amostragem não probabilística por conveniência. Numa
primeira fase foi realizado o processo de tradução e adaptação cultural do instrumento para
a população portuguesa e numa se gunda fase a avaliação das propriedades psicométricas do
mesmo.
Resultados: Foi realizada a tradução e adaptação cultural do instrumento e avaliadas as
propriedades psicométricas. Foi avaliada a validade de construto, por via da análise fatorial
confirmató ria que confirmou a exist ên cia de duas dimensões, assim como na versão original.
A análise da validade convergente, com recurso à correlação de Pearson, revelou validade
convergente com o STAI Ansiedade Traço e ausência de validade convergente com o STAI
Estado . No que concerne à fiabilidade, foi avaliada a consistência interna da escala global,
por via do alfa de Cronbach ( α=0,92 ), e a concordância entre observadores, por via do
coeficiente de correlação intraclasse (ICC=0,91).
Conclusões: O estudo p
ermitiu a tradução e adaptação cultural do instrumento e revelou
que este apresenta boas propriedades psicométricas. Con tudo, n ão havendo validade
convergente com um instrumento que, em teoria, avalia o mesmo constructo e se encontra
já validado para a pop ulação portuguesa (STAI Estado), deve usar se a Hamilton com alguma
prudência, até que novos estudos que permitam esta comparação venham a ser realizados.
Background: The theme of anxiety is increasingly present in today's society, as a result of the more stressful pace of life and given the high expectations of each person. Although anxiety is an emotion that stimulates the reacti on and works as an alert so that a person can deal with the threat and stimulate the ability to perform the activities required in daily life, when it becomes excessive it can manifest itself in a negative way and become pathological. Therefore, it is a ve ry relevant problem at a global and national level. There are several anxiety assessment scales validated for Portugal, however the Hamilton Anxiety Scale, an instrument widely used internationally, is not validated, which is why it seems important to carr y out this study. Objectives: To translate and culturally adapt the Hamilton Anxiety Scale for the Portuguese population and to assess its psychometric properties. Methods: Psychometric study, with non probabilistic convenience sample. In a first phase, th e process of translation and cultural adaptation of the instrument for the Portuguese population was carried out, and in a second phase, the evaluation of its psychometric properties. Results: The translation and cultural adaptation of the instrument was carried out and its psychometric properties were evaluated. Construct validity was assessed through confirmatory factor analysis, which confirmed the existence of two dimensions, as in the original version. The analysis of the convergent val idity, using Pearson's correlation, revealed a convergent validity with the STAI Trait Anxiety and an absence of convergent validity with the STAI State Anxiety. Regarding reliability, the internal consistency of the global scale was evaluated, via Cronbac h's alpha (α=0,92), and interobserver agreement, via the intraclass correlation coefficient (ICC=0,91). Conclusions: The study allowed the translation and cultural adaptation of the instrument and revealed that it has good psychometric properties. However, since there is no convergent validity with an instrument that, in theory, evaluates the same construct and is already validated for the Portuguese population (STAI State), Hamilton should be used with some caution, until further studies allow this compari son are to be carried out.
Background: The theme of anxiety is increasingly present in today's society, as a result of the more stressful pace of life and given the high expectations of each person. Although anxiety is an emotion that stimulates the reacti on and works as an alert so that a person can deal with the threat and stimulate the ability to perform the activities required in daily life, when it becomes excessive it can manifest itself in a negative way and become pathological. Therefore, it is a ve ry relevant problem at a global and national level. There are several anxiety assessment scales validated for Portugal, however the Hamilton Anxiety Scale, an instrument widely used internationally, is not validated, which is why it seems important to carr y out this study. Objectives: To translate and culturally adapt the Hamilton Anxiety Scale for the Portuguese population and to assess its psychometric properties. Methods: Psychometric study, with non probabilistic convenience sample. In a first phase, th e process of translation and cultural adaptation of the instrument for the Portuguese population was carried out, and in a second phase, the evaluation of its psychometric properties. Results: The translation and cultural adaptation of the instrument was carried out and its psychometric properties were evaluated. Construct validity was assessed through confirmatory factor analysis, which confirmed the existence of two dimensions, as in the original version. The analysis of the convergent val idity, using Pearson's correlation, revealed a convergent validity with the STAI Trait Anxiety and an absence of convergent validity with the STAI State Anxiety. Regarding reliability, the internal consistency of the global scale was evaluated, via Cronbac h's alpha (α=0,92), and interobserver agreement, via the intraclass correlation coefficient (ICC=0,91). Conclusions: The study allowed the translation and cultural adaptation of the instrument and revealed that it has good psychometric properties. However, since there is no convergent validity with an instrument that, in theory, evaluates the same construct and is already validated for the Portuguese population (STAI State), Hamilton should be used with some caution, until further studies allow this compari son are to be carried out.
Description
Keywords
Ansiedade Escala de ansiedade de Hamilton Enfermagem de Saúde Mental Psicometria