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Defining Key Performance Indicators for the California COVID-19 Exposure Notification System (CA Notify)
Eliah Aronoff-Spencer1,2,3, Camille Nebeker3,4, Alexander T Wenzel5
1Division of Infectious Diseases and Global Public Health, School of Medicine, University of California San Diego, La Jolla, CA, USA.
Public Health Reports (Washington, D.C. : 1974)
|October 31, 2022
Summary
California
Area of Science:
- Public Health
- Epidemiology
- Digital Health Interventions
Background:
- COVID-19 pandemic necessitated rapid scaling of public health tools.
- Traditional contact tracing faced challenges with efficiency and reach.
- Exposure notification (EN) systems offered a supplementary digital approach.
Purpose of the Study:
- To propose a key performance indicator (KPI) framework for evaluating statewide exposure notification systems.
- To discuss lessons learned from implementing California's CA Notify system.
- To assess the performance of the CA Notify exposure notification system.
Main Methods:
- Defined six key performance indicators: adoption, retention, code sharing, contact identification, behavior change, and impact.
- Analyzed data from the CA Notify system (December 10, 2020, to July 1, 2021).
- Utilized the Google Apple Exposure Notification framework.
Main Results:
- CA Notify achieved nearly 11 million smartphone activations.
- 27% of users with positive COVID-19 tests shared their unique codes.
- Identified at least 122,970 potential contacts through the system.
Conclusions:
- Smartphone-based exposure notification systems are valuable additions to public health interventions.
- Refining methods for system performance measurement is crucial.
- Maintaining user trust and privacy is paramount for digital public health tools.
Keywords:
COVID-19contact tracingdigital exposure notificationdigital technologyinternet-based interventionuniversal designMore Related Videos
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