%0 Journal Article %@ 2369-2960 %I JMIR Publications %V 7 %N 1 %P e25701 %T Drivers of Acceptance of COVID-19 Proximity Tracing Apps in Switzerland: Panel Survey Analysis %A von Wyl,Viktor %A Höglinger,Marc %A Sieber,Chloé %A Kaufmann,Marco %A Moser,André %A Serra-Burriel,Miquel %A Ballouz,Tala %A Menges,Dominik %A Frei,Anja %A Puhan,Milo Alan %+ Epdemiology, Biostatistics & Prevention Institute, University of Zurich, Hirschengraben 84, Zürich, 8001, Switzerland, 41 446346380, viktor.vonwyl@uzh.ch %K COVID-19 %K SARS-CoV-2 %K digital proximity tracing %K digital contact tracing %K mHealth %K tracing %K compliance %K acceptance %K uptake %K usability %K communication %D 2021 %7 6.1.2021 %9 Original Paper %J JMIR Public Health Surveill %G English %X Background: Digital proximity tracing apps have been released to mitigate the transmission of SARS-CoV-2, the virus known to cause COVID-19. However, it remains unclear how the acceptance and uptake of these apps can be improved. Objective: This study aimed to investigate the coverage of the SwissCovid app and the reasons for its nonuse in Switzerland during a period of increasing incidence of COVID-19 cases. Methods: We collected data between September 28 and October 8, 2020, via a nationwide online panel survey (COVID-19 Social Monitor, N=1511). We examined sociodemographic and behavioral factors associated with app use by using multivariable logistic regression, whereas reasons for app nonuse were analyzed descriptively. Results: Overall, 46.5% (703/1511) of the survey participants reported they used the SwissCovid app, which was an increase from 43.9% (662/1508) reported in the previous study wave conducted in July 2020. A higher monthly household income (ie, income >CHF 10,000 or >US $11,000 vs income ≤CHF 6000 or