Objectives: To adapt the Back pain Knowledge and beliefs Survey (BacKS) into simplified Chinese (BacKS-CN) and evaluate its measurement properties among Chinese adults with or without low back pain (LBP). Methods: A forward and backward translation was performed. A total of 278 eligible participants (156 LBP participants and 122 healthy individuals) completed an online survey comprising demographic and clinical characteristics, the BacKS-CN and the Back Beliefs Questionnaire (BBQ). Content validity, structural validity, convergent validity, internal consistency, test-retest reliability, measurement error, and floor and ceiling effects were evaluated. Results: The BacKS-CN demonstrated excellent content validity (I-CVI = 0.860-1.000, S-CVI/Ave = 0.993). Exploratory factor analysis supported a three-factor structure. The BacKS-CN total score demonstrated weak correlations with the BBQ across groups (r = 0.29-0.38), indicating limited convergent validity at the total score level. Factor-level correlations with the BBQ were weak for Positive Recovery Beliefs (r = 0.25-0.27), moderate for Fear of Poor Prognosis (r = 0.43-0.46), and negligible to weak for Active Behavioral Coping (r = 0.03-0.14). Internal consistency was modest for the total sample (Cronbach''s alpha = 0.60) and both subgroups (LBP: alpha = 0.61; healthy: alpha = 0.58), whereas McDonald''s Omega reached acceptable levels across groups (0.69, 0.70, and 0.70, respectively). Test-retest reliability was excellent for the total sample (ICC = 0.89) and both subgroups (LBP: ICC = 0.87; healthy: ICC = 0.91). MDC95% was 5.92 for the total scale. No floor or ceiling effects were observed. Conclusion: The BacKS-CN demonstrated acceptable cross-cultural adaptation, good test-retest reliability, and preliminary evidence supporting its validity in assessing knowledge and beliefs about LBP in Chinese adults.
[1]Beijing Sport Univ, Sch Sports Med & Rehabil, Beijing 100084, Peoples R China.
[2]Hong Kong Polytech Univ, Dept Rehabil Sci, Hong Kong, Peoples R China.
[3]Macquarie Univ, Dept Chiropract, Sydney, NSW, Australia.
[4]Macquarie Univ, Fac Med Hlth & Human Sci, Spinal Pain Res Ctr, Sydney, NSW, Australia.
[5]Hong Kong Polytech Univ, Res Inst Smart Ageing, Hong Kong, Peoples R China.
[6]China Japan Friendship Hosp, Dept Rehabil Med, Beijing, Peoples R China.
[7]Beijing Sport Univ, Sch Int Educ & Exchange, Beijing, Peoples R China.
[8]Univ Sydney, Fac Med & Hlth, Sydney Sch Publ Hlth, Sydney, Australia.
[9]Sydney Local Hlth Dist, Inst Musculoskeletal Hlth, Sydney, NSW 2050, Australia.
(8.0+极速模式)