ArticleAnnals of medicine2026
Responsiveness and minimal important change of Turkish pain-related psychological measures in chronic non-specific low back pain.
Article in Annals of medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
backgroundThe longitudinal interpretability of Turkish pain-related psychological measures in chronic non-specific low back pain (NSLBP) remains uncertain. This study evaluated the responsiveness and minimal important change (MIC) of the Turkish Fear-Avoidance Beliefs Questionnaire (FABQ), Tampa Scale of Kinesiophobia (TSK) and Pain Catastrophizing Scale (PCS).
methodsIn this prospective, single-arm measurement-property study, 110 adults with chronic NSLBP completed baseline and 4-week assessments during a standardized rehabilitation program. Distribution-based responsiveness was assessed using effect size and standardized response mean. Associations with Global Rating of Change (GRC)-defined improvement were examined using correlations and receiver operating characteristic analysis. MIC uncertainty was estimated by stratified bootstrap resampling with 20,000 iterations.
resultsFifty-two participants were classified as improved and 58 as not improved. FABQ change scores were strongly correlated with GRC and showed excellent discrimination (area under the curve (AUC) = 0.943-0.977). GRC-defined MIC estimates (95% bootstrap confidence interval (CI)) were 5 (5-5) for FABQ-Physical Activity and 7 (6-8) for FABQ-Work. PCS correlations and discrimination were more modest (AUC = 0.647-0.700); MIC estimates ranged from 2 to 6 points, with the widest interval for PCS-Total [6 (3-11)]. TSK change was unrelated to GRC (rho = 0.014; AUC = 0.508), and no MIC was estimated.
conclusionsIn this rehabilitation context, FABQ change scores corresponded most strongly to GRC-defined improvement. PCS MIC estimates were less precise, whereas TSK change did not distinguish global improvement. These estimates are context-specific and require external validation.
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