Table 4 Incentives structure: Points.

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

Kind

Action

Points

Enrollment

Download and install the TILES app

50

Authorize Fitbit access

50

Weekly Base

Open the TILES app

5

Complete end of day/week survey

8

Complete midday survey

2

Wear and sync Fitbit

10

Weekly Bonuses

Multiplier for 3 + consecutive days of Fitbit data

 × 2

Reach at least 205 weekly points

20

Earn more points than the previous week

20

Wear and sync Atom phone for at least 2 days

20

  1. Participants received weekly points by wearing sensors and answering surveys. These were converted to weekly monetary rewards and end-of-study bonuses  (see Table 5 for the prizes).
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