Smartphone-Based Geofencing to Ascertain
Hospitalizations
by Kaylin T. Nguyen, Jeffrey E. Olgin, Mark J. Pletcher, Madelena Ng, Leanne Kaye,
Sai Moturu, Rachel A. Gladstone, Chaitanya Malladi, Amy H. Fann, Carol Maguire,
Laura Bettencourt, Matthew A. Christensen, and Gregory M. Marcus
Circ Cardiovasc Qual Outcomes
Volume 10(3):e003326
March 21, 2017
Copyright © American Heart Association, Inc. All rights reserved.
Enrollment and study process.
Kaylin T. Nguyen et al. Circ Cardiovasc Qual Outcomes.
2017;10:e003326
Copyright © American Heart Association, Inc. All rights reserved.
Geographical distribution of participants (A) and hospitals (B).
Kaylin T. Nguyen et al. Circ Cardiovasc Qual Outcomes.
2017;10:e003326
Copyright © American Heart Association, Inc. All rights reserved.
Comparison between application-based and actual duration of hospital stay.
Kaylin T. Nguyen et al. Circ Cardiovasc Qual Outcomes.
2017;10:e003326
Copyright © American Heart Association, Inc. All rights reserved.
Accuracy of medical visits confirmed through the application in remote arm. *Three participants
were included in both groups (multiple visits detected with participants verifying via e-mail at
least one visit for medical care and denied at least one visit for medical care).
Kaylin T. Nguyen et al. Circ Cardiovasc Qual Outcomes.
2017;10:e003326
Copyright © American Heart Association, Inc. All rights reserved.