*3.2. Data Set*

The anonymized data used in the present study was collected from participants during their participation in the HNGW health promotion program. All participants provided informed consent for participation in the HNGW study and for the use of their anonymized data for research purposes.

We used the steps per minute of each participant, resulting in a total of 349,920 measurements across all participants. We only considered the step data collected during the intervention period. That is, for both the intervention and the control group, we used the last twelve weeks of available step data. By focusing on the intervention period, we have a more homogeneous sample than we would have when including both the intervention and control data.

While the Fitbit platform provides us with several minutely measures (e.g., steps, metabolic equivalent of tasks [METs], calories, and distance), in our analysis we only included the steps variable. We used the steps variable as we expect it to be the most accurate and relevant, as all other variables are by-products derived using approximation algorithms.
