Title: Validation of the Chinese version of Joint Protection Self-Efficacy Scale in patients with rheumatoid arthritis

Biography:

Abstract

Objective: To develop and validate the Chinese version of the Joint Protection Self-Efficacy Scale (CJP-SES) in patients with rheumatoid arthritis (RA) in China.

Method:(1) Translation of the original German/English version JP-SES and cultural adaptation into the Chinese language; (2)Validation of the CJP-SES with the Chinese versions of the Arthritis Self-Efficacy Scale-8 (ASES-8), the Laffrey Health Conception Scale (LHCS), 10-item Perceived Efficacy in Patient-Physician Interactions Scale (PEPPI-10), Disease Activity Score-28 (DAS-28) and Health Assessment Questionnaire (HAQ). Instrument measurement included reliability testing, item generation, construct validity, test-retest reliability and correlation with other measurements. Confirmatory factor analysis was applied to determine construct validity and internal consistency. 115 patients with RA were investigated.

Result: Finally 105 RA patients were included in the analysis. Confirmatory factor analysis demonstrated fit for a unidimensional model of the JP-SES. Additionally, the scale showed internal consistency (Cronbach’s α coefficient,0.922), Kappa coefficient (0.653) and test–retest reliability (ICC=0.94). Weak correlations with other scores for the other instruments, such as the Chinese version of ASES-8 (0.263) and PEPPI-10 (0.326).

Correlation with duration (0.274), moderate correlation with BMI (-0.438) and DAS-28 (-0.493), strong correlation with HAQ (-0.644) were found in this research.

Conclusion: This is the first study to adapt and validate the JP-SES into Chinese for use in patients with RA. Our research showing that the CJP-SES has a good construct validity, internal consistency, and test-retest reliability. This scale can help doctors and nurses to assess the self-efficacy of patients with RA.