• Maryam Saadat, Sara Salamat, Neda Mostafaee, Farzaneh Soleimani, Zeinab Rouintan, and Mehrnoosh Amin.
• Department of Physiotherapy, School of Rehabilitation Sciences, Jundishapur University of Medical Sciences, Ahvaz, Iran.
• Eur Spine J. 2023 Sep 1; 32 (9): 302330293023-3029.

IntroductionFear avoidance beliefs questionnaire (FABQ), Tampa scale of kinesiophobia (TSK), and pain catastrophizing scale (PCS) are tools widely used to measure fear-avoidance beliefs, fear of movement, and pain-related catastrophic thinking in people with chronic spinal disorders.PurposeTo evaluate responsiveness and minimal important change (MIC) for the Persian version of FABQ, TSK, and PCS.MethodOne hundred people with chronic non-specific neck pain participated in an intervention program including routine physiotherapy plus pain neuroscience education. They fulfilled FABQ, TSK, and PCS questionnaires at baseline and 4-week follow-up. The 7-point global rating of change (GRC) as the external anchor was also completed in follow-up by patients. Responsiveness was evaluated using receiver operating characteristic (ROC) curve analysis and correlation analysis. According to GRC, patients were classified into two groups (improved vs. unimproved). The best cutoff or MIC was estimated via the ROC curve.ResultsAcceptable responsiveness obtained for FABQ, TSK, and PCS with the area under the curve ranging from 0.84 to 0.94 and spearman coefficient > 0.6. The MIC values reflecting improvement were 9.5, 10.5, and 12.5 points, respectively, for FABQ, TSK, and PCS.ConclusionsThe results of this study demonstrated that the Persian version of FABQ, TSK, and PCS have sufficient responsiveness and good ability to measure meaningful clinical changes in people with patient CNNP. The MIC scores of the FABQ, TSK, and PCS can help clinicians and researchers to detect changes significant to the patient following a rehabilitation program.© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

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