Brazilian Journal of Pain
https://brjp.org.br/article/doi/10.5935/2595-0118.20230091-en
Brazilian Journal of Pain
Original Article

Validation of the Brazilian version of the World Health Organization Disability Assessment Schedule in women with chronic pelvic pain

Validação da versão brasileira do World Health Organization Disability Assessment Schedule em mulheres com dor pélvica crônica 

Gleiciane Aguiar Brito; Natany Santos Martins; Isabella Parente Ribeiro Frota; Mayle Andrade Moreira; Simony Lira do Nascimento

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Abstract

BACKGROUND AND OBJECTIVES: Chronic pelvic pain (CPP) is a persistent pain perceived in structures related to the pelvis. It is often associated with negative functioning consequences that generate disability. There are currently no validated tools in the literature for measuring functioning according to the theoretical-conceptual model presented by the International Classification of Functioning, Disability and Health (ICF) for patients with CPP. The objective of this study was to test the measurement properties of the World Health Organization Disability Assessment Schedule (WHODAS 2.0) for women with CPP.
METHODS: This is a validation study. The auxiliary instruments used in the validation process of the WHODAS 2.0 were: the 12-item Short-Form Health Survey (SF-12), the Numerical Pain Rating Scale, and a form with sociodemographic and clinical data. Internal consistency was analyzed using Cronbach's alpha coefficient, construct validity was assessed using Spearman's correlation coefficient, discriminative validity was analyzed using the analysis of variance, and test-retest reliability was analyzed using the Intra-class Correlation Coefficient (ICC).
RESULTS: The study included 128 women with CPP. Reliability analysis showed satisfactory results in terms of internal consistency (a=0.71 to 0.94) and excellent in test-retest reliability (IIC= 0.69 to 0.91). Validity analysis showed a strong to moderate correlation in construct validity between the total WHODAS score and the physical (rho=0.7, p<0.001) and mental components of the SF-12 (rho-0.67, p<0.0001), and statistically significant values for discriminative validity according to pain intensity in the last 30 days.
CONCLUSION: The WHODAS 2.0 instrument proved to be a reliable and valid questionnaire for investigating the functioning and disability of women with CPE

Keywords

Disability and health, International Classification of Functioning, Pelvic pain, Validation study

Resumo

JUSTIFICATIVA E OBJETIVOS: A dor pélvica crônica (DPC) é uma dor persistente percebida em estruturas relacionadas à pelve. Está frequentemente associada a consequências negativas que geram incapacidade, entretanto, atualmente não existem ferramentas validadas para medir a funcionalidade segundo a Classificação Internacional de Funcionalidade, Incapacidade e Saúde (CIF) em pacientes com DPC. O objetivo deste estudo foi testar as propriedades de medida do World Health Organization Disability Assessment Schedule (WHODAS 2.0) para mulheres com DPC. 
MÉTODOS: Trata-se de um estudo de validação. Os instrumentos utilizados no processo de validação do WHODAS 2.0 foram: o 12-item Short-Form Health Survey (SF-12), a Escala Numérica da Dor e um formulário com dados sociodemográficos e clínicos. A consistência interna foi analisada pelo coeficiente alfa de Cronbach, a validade de construto foi avaliada pelo coeficiente de correlação de Spearman, a validade discriminativa foi analisada pela Análise de Variância e a confiabilidade teste-reteste foi analisada pelo coeficiente de correlação intraclasse (ICC). 
RESULTADOS: O estudo incluiu 128 mulheres com DPC. As análises de confiabilidade mostraram resultados satisfatórios em termos de consistência interna (a=0,71 a 0,94) e excelentes na confiabilidade teste-reteste (ICC=0,69 a 0,91). As análises de validade mostraram uma correlação forte a moderada na validade de construto entre o escore WHODAS total e os componentes físicos (rho=0,7, p<0,001) e mentais do SF-12 (rho=0,67, p<0,0001) e valores significativos para validade discriminativa de acordo com a intensidade da dor nos últimos 30 dias.
CONCLUSÃO: O instrumento WHODAS 2.0 mostrou-se um questionário confiável e válido para investigar a funcionalidade de mulheres com DPC.

Palavras-chave

Classificação Internacional de Funcionalidade, Dor pélvica, Estudo de validação, Incapacidade e saúde

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Submitted date:
08/07/2023

Accepted date:
10/05/2023

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