• Lucíola da C Menezes Costa, Christopher G Maher, James H McAuley, Mark J Hancock, Warley de Melo Oliveira, Daniel Camara Azevedo, Ludmilla Motta Andrade Freitas Pozzi, André Roberto Scarpelli Pereira, and Leonardo Oliveira Pena Costa.
• The George Institute for Global Health, The University of Sydney, Missenden Road, Sydney, NSW 2050, Australia. lmenezes@georgeinstitute.org.au
• J Clin Epidemiol. 2011 Aug 1;64(8):903-12.

ObjectiveTo cross-culturally adapt the Short Form of the McGill Pain Questionnaire (SF-MPQ) into Brazilian-Portuguese and test the clinimetric properties of the newly developed SF-MPQ and the previously cross-culturally adapted Brazilian-Portuguese Long Form of the McGill Pain Questionnaire (LF-MPQ).Study Design And SettingThe SF-MPQ was translated and adapted into Brazilian-Portuguese following recommendations from current guidelines. Both SF-MPQ and LF-MPQ were administered in a prospective longitudinal design to 203 patients with a range of musculoskeletal conditions to evaluate their clinimetric properties.ResultsBoth questionnaires demonstrated high levels of internal consistency (Cronbach α range=0.70-0.79), reliability (intraclass correlation coefficient(2,1) range=0.69-0.85), and agreement (standard error of the measurement range=0.80-6.92). We observed positive and moderate-to-high correlations among the SF-MPQ, the LF-MPQ, and the Numerical Rating Scale (Pearson r ranging from 0.49 to 0.68). No ceiling or floor effects were detected. Both versions demonstrated acceptable levels of responsiveness (effect size range=0.30-0.60; correlations range=0.23-0.51; and area under the curve range=0.56-0.76).ConclusionsThe Brazilian-Portuguese versions of the MPQ were found to be reproducible, valid, and responsive for the assessment of pain in patients with musculoskeletal conditions.Copyright © 2011 Elsevier Inc. All rights reserved.

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