Developing and Evaluating a Mobile Foot Care Application for Persons With Diabetes Mellitus: A Randomized Pilot Study

Ulceration of the foot is a major complication of diabetes mellitus, and optimal self-care may help prevent its development. Research suggests that mobile applications (apps) may affect behavioral change. OBJECTIVE: The purpose of this study was to develop the Mobile Diabetic Foot Personal Care System (m-DAKBAS) and evaluate its effectiveness for patients with diabetes. METHOD: During Phase 1, a mobile app that included communication features, remote patient monitoring, and information was developed and pilot-tested among 10 patients. The Phase 2 study, conducted from June 2017 to April 2018, used a 2-group, pre-test/post-test design to evaluate the effect of the app on patients' knowledge, behavior, and self-efficacy scores when used for 6 months. Both the experimental (app) and control groups participated in 1 education session at the start of the study. RESULTS: Of 106 patients who enrolled, 88 completed the study (44 in the experimental group and 44 in the control group). Only 6 patients had received education about foot care previously. The average age of all participants was 51.63 years (SD = 8.08). There were significantly more women in the experimental group than in the control group (65% vs. 45.5%; P = 0.5). Each participant used the app for 24 weeks, and the data entry rate was 72.9%. Throughout the study, participants had 1977 data entries (blood glucose and foot observation) in total. Differences between pre- and post-intervention test scores were significantly higher for knowledge, behavior, and self-efficacy in both groups, but the difference was greater in the experimental group (P < .05). Only post-test knowledge scores were significantly higher in the experimental compared with the control group (P < .05). Compared to the start of the study, the proportion of participants with cracked/dry skin and inappropriate footwear was significantly lower in the experimental group but not in the control group. CONCLUSION: In this study, education and follow-up via the mobile app and verbal-only instruction increased the knowledge, behavior, and self-efficacy scores of patients in both groups. Post-study knowledge scores were significantly higher in the experimental group than in the control group. Patient education remains a crucial component of optimal care, and further development, refinement, and testing of mobile applications to improve self-efficacy and reduce the risk of diabetic foot are warranted.