• Jocassia Silva Pinheiro, André Pontes-Silva, Gabriel Gardhel Costa Araujo, Letícia Padilha Mendes, Flávio de Oliveira Pires, Cid André Fidelis-de-Paula-Gomes, and Almir Vieira Dibai-Filho.
• Universidade Federal do Maranhão, Departamento de Educação Física - São Luís (MA), Brazil.
• Rev Assoc Med Bras (1992). 2021 Aug 1; 67 (8): 1087-1092.

ObjectiveThe main aim of this study was to evaluate the structural validity of the Brazilian version of the Japanese Orthopedic Association Back Pain Evaluation Questionnaire (JOABPEQ).MethodsIndividuals with chronic low back pain were included. The data collection of the study occurred by means of online platform. Confirmatory factor analysis was performed. The theoretical version proposed for the JOABPEQ with five domains was tested. The following indices were considered to verify the fit of the model: comparative fit index (CFI), Tucker-Lewis index (TLI), root mean square error of approximation (RMSEA), and chi-square/degrees of freedom (DF).ResultsThe final sample consisted of 175 volunteers, mostly women (68%), adults (mean age of 28.98 years), lean (mean body mass index of 25 kg/m2), with incomplete higher education, single, with mean of pain chronicity of 61.50 months and mean of pain intensity of 6.78 points on the Numeric Pain Scale. Regarding the structure of the JOABPEQ, the original version with five domains was adequate: chi-square/DF=1.52, CFI=0.954, TLI=0.948, and RMSEA=0.055. The factorial load ranges from 0.41 to 0.90.ConclusionsThis study confirms the structure of JOABPEQ with 5 domains (low back pain, lumbar function, walking ability, social life function, and mental health) and 25 items in individuals with chronic low back pain.

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