Moderating role of self-efficacy on the associations of social support with depressive and anxiety symptoms in Chinese patients with rheumatoid arthritis

PURPOSE: Rheumatoid arthritis (RA) is significantly associated with depression and anxiety. Social support and self-efficacy are the coping resources of psychological distress. However, little research is available on the interaction of social support and self-efficacy in RA patients. This study aimed to identify the prevalence of depressive and anxiety symptoms and to examine whether or not self-efficacy moderates the associations of social support with depressive and anxiety symptoms in Chinese RA patients. METHODS: A multicenter, cross-sectional study was conducted in northeast of China from December 2014 to January 2016. A total of 297 RA patients completed the Center for Epidemiologic Studies Depression Scale, Zung Self-Rating Anxiety Scale, Multidimensional Scale of Perceived Social Support and General Self-Efficacy Scale. The associations of social support, self-efficacy and social support × self-efficacy interaction with depressive and anxiety symptoms were examined by hierarchical regression analysis. If the interaction was statistically significant, simple slope analysis was conducted. RESULTS: The prevalence of depressive symptoms was 58.2%, while 47.5% RA patients had anxiety symptoms. Social support and social support × self-efficacy interaction were significantly associated with depressive symptoms. Social support, self-efficacy and their interaction were significantly associated with anxiety symptoms. The association between social support and depressive symptoms was gradually reduced in the low (1 standard deviation [SD] below the mean, B=−0.614, β=−0.876, P<0.001), mean (B=−0.395, β=−0.563, P<0.001) and high (1 SD above the mean, B=−0.176, β=−0.251, P=0.002) groups of self-efficacy. For anxiety symptoms, the association was also gradually reduced in the low (B=−0.527, β=−0.774, P<0.001), mean (B=−0.288, β=−423, P<0.001) and high (B=−0.049, β=−0.071, P=0.447) groups of self-efficacy. CONCLUSION: There was a high prevalence of depressive and anxiety symptoms in Chinese RA patients. Self-efficacy could attenuate the associations of social support with depressive and anxiety symptoms. Adequate social support and self-efficacy intervention should be provided to alleviate psychological distress.