The Impact of a Theory-Based mHealth Intervention on Disease Knowledge, Self-efficacy, and Exercise Adherence Among Ankylosing Spondylitis Patients: Randomized Controlled Trial

Abstract

Background Patient education is recommended as an integral part of disease management in ankylosing spondylitis (AS), a chronic rheumatic disease that predominantly affects young males and requires long-term disease management. Convenient and cost-effective approaches to deliver patient education are required to these patients. Objective This study aimed to examine the effects of a theory-based educational intervention delivered through a social networking app, WeChat, on disease knowledge, self-efficacy, exercise adherence, and health outcomes in Chinese AS patients. Methods This study was a single-blind randomized controlled trial conducted in a tertiary hospital in Chengdu, China. Eligible participants were randomly allocated to the intervention or control group. Participants in the control group received standard care. The intervention group received the health belief model (HBM)-based educational intervention, consisting of 4 individual educational sessions and educational information sharing through WeChat, the predominant social networking app in China. The primary outcomes were disease knowledge, self-efficacy, and exercise adherence. The secondary outcomes were disease activity and physical function. Data were collected at baseline and at the end of the intervention (12th week). Chi-square test, t test, Mann-Whitney U tests were used to examine the effects of educational intervention. Results This study included 118 patients with AS. The majority of participants were male (93/118, 78.8%). Around half of them were married (56/118, 47.5%), never smoked (70/118, 59.3%), and had college educational level or above (62/118, 52.5%). At posttest, participants in the intervention group had higher disease knowledge (all P<.001) and self-efficacy (P<.001), and a larger proportion of participants in the intervention group adhered to regular exercise routines than those in the control group (P=.003). The within-group analyses for the intervention group showed increases in all scores of disease knowledge (all P<.001) and self-efficacy score (P<.001), but only correct answer score (P=.04) and general knowledge score (P=.002) of disease knowledge in the control group improved. The within-group analysis for the control group found a decline of physical function (P=.002) but no significant change in disease activity (P>.05). The within-group analysis for the intervention group showed no significant change in disease activity or physical function (P>.05). At posttest, no statistically significant difference was found on disease activity or physical function between the intervention and control groups (P>.05). Conclusions The HBM-based educational intervention through WeChat can effectively improve patient disease knowledge, self-efficacy, and exercise adherence. WeChat is feasible and effective to deliver patient education for patients with chronic diseases such as AS. This mHealth intervention can be integrated into routine rheumatology care. Trial Registration Chinese Clinical Trial Registry ChiCTR-IPR-16009293; https://tinyurl.com/swxt8xk7

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