Low back activity confidence scale: Cross-cultural adaptation, reliability, and validity of the Turkish version in individuals with non-specific low back pain.

Abstract

Background: The Low Back Activity Confidence Scale (LoBACS) was developed to evaluate self-efficacy in individuals with low back pain (LBP).

Objective: This study aimed to assess the psychometric properties of Turkish version of LoBACS in individuals with non-specific LBP.

Methods: The study included 105 participants (66 female, 39 male) with a mean age of 40.94 ± 14.65 years. The cultural adaptation and psychometric evaluation of LoBACS followed international standards and COSMIN guidelines. Reliability was assessed using the Cronbach's α and Intraclass Correlation Coefficient (ICC). Structural validity was tested with Confirmatory Factor Analysis (CFA). Pearson correlation analysis examined the relationships between LoBACS and the Waddell Disability Index (WDI), Modified Oswestry Disability Index (MODI), Roland Morris Disability Questionnaire (RMDQ), International Physical Activity Questionnaire (IPAQ), Short Form-36 (SF-36), Fear Avoidance Beliefs Questionnaire (FABQ), and Visual Analog Scale (VAS).

Results: The Turkish version of LoBACS showed high reliability (ICC = 0.850, Cronbach's α = 0.919). CFA and fit indices supported its validity. Correlations between LoBACS and other measures ranged from -0.192 to 0.542. No floor or ceiling effects were noted.

Conclusion: The Turkish version of LoBACS is a reliable and valid tool for assessing self-efficacy in individuals with non-specific LBP, suitable for both research and clinical settings.