• Young Ern Saw, Edina Yi-Qin Tan, Jessica Shijia Liu, and Jean Cj Liu.
• Division of Social Sciences, Yale-NUS College, Singapore, Singapore.
• J. Med. Internet Res. 2021 Feb 3; 23 (2): e24730.

BackgroundDuring the COVID-19 pandemic, new digital solutions have been developed for infection control. In particular, contact tracing mobile apps provide a means for governments to manage both health and economic concerns. However, public reception of these apps is paramount to their success, and global uptake rates have been low.ObjectiveIn this study, we sought to identify the characteristics of individuals or factors potentially associated with voluntary downloads of a contact tracing mobile app in Singapore.MethodsA cohort of 505 adults from the general community completed an online survey. As the primary outcome measure, participants were asked to indicate whether they had downloaded the contact tracing app TraceTogether introduced at the national level. The following were assessed as predictor variables: (1) participant demographics, (2) behavioral modifications on account of the pandemic, and (3) pandemic severity (the number of cases and lockdown status).ResultsWithin our data set, the strongest predictor of the uptake of TraceTogether was the extent to which individuals had already adjusted their lifestyles because of the pandemic (z=13.56; P<.001). Network analyses revealed that uptake was most related to the following: using hand sanitizers, avoiding public transport, and preferring outdoor over indoor venues during the pandemic. However, demographic and situational characteristics were not significantly associated with app downloads.ConclusionsEfforts to introduce contact tracing apps could capitalize on pandemic-related behavioral adjustments among individuals. Given that a large number of individuals is required to download contact tracing apps for contact tracing to be effective, further studies are required to understand how citizens respond to contact tracing apps.Trial RegistrationClinicalTrials.gov NCT04468581, https://clinicaltrials.gov/ct2/show/NCT04468581.©Young Ern Saw, Edina Yi-Qin Tan, Jessica Shijia Liu, Jean CJ Liu. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 03.02.2021.

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