The activPAL Technologies’ CREA algorithm can be used to track bedtime, wake time, and sleep time, but there are marked differences between the measured sleep and wake times using the activPAL and ActiGraph devices. The activPAL algorithm appeared to overestimated...
Smartphones can be extremely useful in collecting data about daily activities (sleep, physical activity, etc.), as they are typically in close proximity to their users. The feasibility of using smartphones to collect this sort of information depends largely on the...
This paper examined data donation from smartphone apps as a way to collect passive data. The focus of this presentation was the willingness to donate data, the drivers behind data donation and the biases in the donated data.
Smartphones make it possible to collect both self-reported data as well as passively measured behavior data simultaneously. Utilizing these data sources in conjunction with one another can be especially useful in measuring and contextualizing data, but can be...
Utilizing smartphone applications can be an extremely useful tool for administering surveys and collecting behavioral data. The likelihood of using a smartphone application was found to be lower for women and older adults, as well as for those with higher levels of...
