Kraakman, Rianne, et al. “The Feasibility of Using Consumer-Level Activity Trackers in Population Monitoring of Physical Activity: Comparing Representativeness and Measurement Quality With Self-Report and a Professional Research-Grade Accelerometer”. Survey Research Methods, vol. 17, no. 4, Dec. 2023, pp. 429-45, doi:10.18148/srm/2023.v17i4.7919.