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Publications

Journal Article Comparative Study Validation Study Ppublish

PubMed: 42864908 DOI: 10.1002/msc.70283

Structural Validity and Measurement Properties of the Tampa Scale for Kinesiophobia in Knee Osteoarthritis: Comparison of Candidate Factor Structures.

Musculoskeletal Care 24(4):e70283

Authors: José Djalma Arrais Junior, Lisa C Carlesso, Barbara Greco Miura, Bruno Ruocco Verengue, Patrícia Gabrielle Dos Santos, Almir Vieira Dibai-Filho, Cid André Fidelis-de-Paula-Gomes

Affiliations

  • Postgraduate Program in Rehabilitation Sciences, Nove de Julho University, São Paulo, São Paulo, Brazil.
  • School of Rehabilitation Science, McMaster University, Hamilton, Ontario, Canada.
  • Postgraduate Program in Physical Education, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil.

Abstract

PURPOSE

Kinesiophobia is clinically relevant in knee osteoarthritis (KOA), but the appropriate Tampa Scale for Kinesiophobia (TSK) structure remains uncertain. We compared candidate TSK factor structures and examined the selected measurement properties of the solution with the most favourable relative fit in this sample.

METHODS

Among 119 participants with KOA, ordinal confirmatory factor analysis tested three a priori structures: one-factor 17-item, one-factor 11-item, and two-factor 11-item. After three items in the two-factor 11-item structure had loadings below 0.20, a secondary exploratory 8-item solution was examined. For this exploratory solution, convergent validity, test-retest reliability, measurement error, composite reliability, and floor and ceiling effects were assessed.

RESULTS

All a priori structures had borderline fit and weak loadings. Among the models examined, the exploratory two-factor 8-item solution had the highest CFI and TLI (0.948 and 0.924), although its RMSEA was the highest (0.078). Reliability was substantial for Somatic focus (ICC = 0.85) and Activity avoidance (ICC = 0.78), with low measurement error. Composite reliability was adequate only for Activity avoidance.

CONCLUSION

The exploratory 8-item solution provided preliminary evidence, particularly for Activity avoidance, but requires independent validation.

MeSH

Research Design, Osteoarthritis, Knee, Osteoarthritis, Factor Xi, Solutions, Psychometrics