LAUSR

Introduction Patient Decision Aid (PDA) is a tool to prompt shared decision-making. The aim of this study was to evaluate the impact of a PDA on Chinese primary open angle glaucoma (POAG) patients. Methods All subjects were randomized into control and PDA group. The questionnaires, including 1) Glaucoma knowledge; 2) 8-item Morisky medication adherence scale (MMAS-8); 3) 10-item glaucoma medication adherence self-efficacy scale (GMASES-10); and 4) 16-item decision conflict scale (DCS), were evaluated at baseline, 3 and 6 months follow up. Results Totally, 156 subjects participated in this study, including 77 in the control group and 79 in the PDA group. Compared to the control group, PDA group showed around 1 point more improvement in disease knowledge at both 3 and 6 months (both p < 0.05), 2.5[95%CI(1.0, 4.1)] and 1.9[95%CI(0.2, 3.7)] points more improvement in GMASES-10 at 3 and 6 months respectively, and reduction in DCS by 8.8 [95%CI (4.6, 12.9)] points more at 3 months and 13.5 [95%CI (8.9, 18.0)] points more at 6 months. No difference was detected in MMAS-8. Conclusion PDA led to improvement in disease knowledge and self-confidence in medication adherence, and reduced decision conflict compared to control group for at least 6 months.