Conclusions
Stefan Kodzhabashev
SECONDARY
This study described the optimization phase of Soapp, a smartphone app for promoting hand hygiene in the context of the COVID-19 pandemic. By leveraging digital technologies and MOST, we addressed the call raised by public health experts for developing evidence-based behavior change interventions that are designed and optimized to be effective in a pandemic context [The authors thank Melanie Bamert, Dominik Zeilstra, Lisa Maria Summermatter, and gfs.bern for study support and their help with app development. Moreover, they thank the Technology Platform of the Faculty of Human Sciences at the University of Bern, especially Stefan Kodzhabashev, for facilitating app development. This study was funded by Ursula-Wirz Stiftung.Authors' Contributions: DB was involved in formal analysis and the writing of the original draft. MAA contributed to conceptualization and methodology. MDRC and CF contributed to qualitative methodology. GGR contributed to resource accumulation and data curation. CB contributed to resource accumulation, data curation, and qualitative methodology. CR was involved in formal qualitative analysis and the writing of the qualitative report. JI contributed to funding acquisition, conceptualization, methodology, formal qualitative analysis, and supervision. All the authors were involved in discussion and in writing, reviewing, and editing the manuscript.Conflicts of Interest: None declared.Hand hygiene items and secondary hypothesis testing.CONSORT (Consolidated Standards of Reporting Trials) checklist.Qualitative interview guide.Supplement to quantitative results.Summary and quotes from the thematic analysis.