Table 2 Selected sensors with a summary of measures (output) and instructed use or sensing times.

From: TILES-2019: A longitudinal physiologic and behavioral data set of medical residents in an intensive care unit

Sensor

Measures

Instructed use/Sensing times

Fitbit Charge 3

PPG-based heart rate, step count, sleep

24 h/day

RescueTime

Cell phone usage

24 h/day

Unihertz Atom

Audio features, received signal strength of Bluetooth packets

At work

TILES app

Midday, end of day, end of week surveys

Upon request (push event)

Web browser

Baseline survey

At the beginning of the study

Owl-in-One

Received signal strength of Bluetooth packets

Installed at LAC + USC Hospital, 24 h/day

Eddystone Beacon

Eddystone Beacon

Installed at LAC + USC Hospital, 24 h/day

TIS Device

Interactions

At work

  1. The first two sensing streams were obtained directly from participants through wearable sensors while apps were installed on personal smartphones. All surveys were obtained by direct input of participants on their personal smartphones or a web browser. Owl-in-One and Eddystone beacons sensing streams were obtained by placing sensors in key locations of the ICU. The TIS device streams were obtained by placing a contact tracing sensor on the participants’ work badge. PPG: photoplethysmography.
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