Adaptação cultural do instrumento "The low back pain disability owestry questionnaire" / Cross-cultural adaptation of oswerstry disability index

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Reports in the literature have identified a need for internationally standardized and reliable measurements to analyse back pain. The Oswestry questionnaire has become one of the principal outcome measures used in the management of spinal disorders. The objective of this study was to translate and adapt a version of the Oswestry questionnaire into Brazilian Portuguese and evaluate its reliability. The cross-cultural adaptation was performed according to the internationally recommended methodology, using the following guidelines: translation, back-translation; revision by an expert committee and pretesting. First the questionnaire was independently translated into Portuguese by two bilingual translators. Second, two other professional translators whose mother tongue was English performed a back-translation independently from one another. A committee consisting of six specialists was brought together and developed a final version. This version was pretested on 40 subjects suffering from low back pain. Reliability was estimated through stability (test-retest) and homogeneity assessment. The validity was tested comparing scores of the Oswestry with the following measures: The Roland-Morris Disability Questionnaire, the SF-36 questionnaire and a numerical pain scale. The psychometric properties of the translated version were evaluated by administering the questionnaire to 120 subjects with back pain. Results indicated good content validity and internal consistency (Cronbach alpha = 0.87). Intraclass correlation coefficient for test-retest reliability was r = 0.99. The Oswestry questionnaire showed moderate correlation with pain measure using a numerical pain scale (r = 0 66). Relatively high correlation was also found between the Oswestry and the Roland - Morris scores (r = 0.81). There was significant correlation (p<0.001) between the Oswestry scores and the eight scales of the SF - 36 questionnaire. The highest correlation coefficients were for physical functioning (r = 0,83); bodily pain (r = 0,58) and role physical (r = 0,53). This study confirmed that the process used for adaptation of the Oswestry questionnaire was well succeeded and that this version had excellent psychometrical properties

ASSUNTO(S)

backbone reprodutibilidade dos testes coluna vertebral - exames - validade dor lombar low back pain

ACESSO AO ARTIGO

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