Abstract
Background and objectivesRheumatoid arthritis (RA) is an autoimmune inflammatory condition that causing disability and affection of patient’s quality of life (QoL). Self-efficacy investigation helps us to detect the requirements of chronically affected patients and evaluation of self-care management programs. The aim of our study was to test validity and reliability of Self-Efficacy for Managing Chronic Disease (SEMCD-Arabic) in RA patients.MethodThis study included 248 RA patients, carried out at Rheumatology and Rehabilitation Department. The SEMCD-Arabic Validity was assessed by correlating the SEMCD-Arabic scale with the validated Arabic version of the modified Health Assessment Questionnaire HAQ (MHAQ), the Arabic version of the Multidimensional Assessment of Fatigue (MAF) scale, and the Arabic version of Short Form 36 version 2 for quality of life (SF QoL). Internal consistency, test–retest reliability was assessed.ResultsConvergent validity was confirmed by a positive correlation between (physical, mental) component of SF QoL and SEMCD-Arabic (r = 0.918, r = 0.925) respectively, and negative correlation between MAF and SEMCD-Arabic (r = − 0.657) and MHAQ with SEMCD-Arabic (r = − 0.595). Discriminant validity confirmed by a significant negative correlation between visual analogue scale (VAS) for pain, disease activity scale (DAS28), Morning stiffness, patient health, physician health, age, duration, and SEMCD-Arabic (r = − 0.1–0.7) (P < 0.001). Test–retest reliability was estimated which revealed a high interclass correlation coefficient (ICC = 0.87–0.997) indicating excellent agreement and internal consistency is acceptable as the Cronbach’s alpha value (0.660 to 0.78).ConclusionThe SEMCD-Arabic questionnaire can be used as a valid and reliable measure for assessment of patient’s self-efficacy in RA.Key Points• The SEMCD-Arabic questionnaire has a statistically significant validity in correlation with different clinical manifestations MHAQ, SF QoL, and MAF.• The Arabic SEMCD is highly reliable with a Cronbach’s alpha of 0.660 to 0.78.
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