ALiR’s documentation and datafiles are currently available for research use by inquiry. Please contact ALiR study director, Dr. Ritika Chaturvedi @ ritikac@usc.edu.
Data will be available for download through the data pages in Spring of 2025. Data elements include (Table 1):
- Baseline surveys.
- Monthly repeated surveys.
- Fitbit’s provided daily data summaries (general Use Tier): activity, steps, sleep, heart rate (HR), heart rate variability (HRV), SpO2, temperature, basal metabolic rate (BMR).
- Derived data summaries by UAS’s inhouse analytics team (general use tier): walking speed, gait, circadian rhythm, device wear patterns.
- Fitbit’s raw intraday (minute level) data (restricted tier): activity, steps, sleep, HR, HRV, SpO2, temperature, BMR.