Dao, Hang VietDao, Quan VietLam, Hoa NgocHoang, Long BaoNguyen, Van ThiNguyen, Thuy ThiVu, Dat QuocPokorny, Christopher SNguyen, Hoa LAllison, Jeroan J.Goldberg, Robert J.Dao, An Thi MinhDo, Toan Thanh ThiDao, Long Van2023-07-202023-07-202023-06-05Dao HV, Dao QV, Lam HN, Hoang LB, Nguyen VT, Nguyen TT, Vu DQ, Pokorny CS, Nguyen HL, Allison J, Goldberg RJ, Dao ATM, Do TTT, Dao LV. Effectiveness of using a patient education mobile application to improve the quality of bowel preparation: a randomised controlled trial. BMJ Open Gastroenterol. 2023 Jun;10(1):e001107. doi: 10.1136/bmjgast-2023-001107. PMID: 37277203; PMCID: PMC10255132.2054-477410.1136/bmjgast-2023-00110737277203https://hdl.handle.net/20.500.14038/52331Aims: To determine the effectiveness of a mobile application (app) in improving the quality of bowel preparation for colonoscopy. Method: An endoscopist-blinded randomised controlled trial enrolled patients who were undergoing a colonoscopy on the same day of bowel preparation. The intervention used a Vietnamese mobile app that provides instructions on bowel preparation while patients in the comparison group received conventional instructions. Outcomes included the Boston Bowel Preparation Scale (BBPS) to assess the quality of bowel preparation and the polyp detection rate (PDR) and adenoma detection rate (ADR). Results: The study recruited 515 patients (256 in the intervention group). The median age was 42 years, 50.9% were females, 69.1% high school graduates and higher, and 45.2% from urban area. Patients in the intervention group had higher adherence to instructions (60.9% vs 52.4%, p=0.05) and longer length of taking laxatives (mean difference 0.17 hours, 95% CI 0.06 to 0.27). The intervention did not reduce the risk of poor bowel cleansing (total BBPS<6) in both overall (7.4% vs 7.7%; risk ratio 0.96, 95% CI 0.53 to 1.76) and subgroup analysis. PDR and ADR were similar between the two groups. Conclusions: The mobile app providing instructions on proper bowel preparation improved the practice during bowel preparation but did not improve the quality of bowel cleansing or PDR.enCopyright © Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.http://creativecommons.org/licenses/by-nc/4.0/clinical trialscolonoscopymobile applicationsJournal ArticleBMJ open gastroenterology