David Singleton

Interaction of walking activity and long-term air pollution on exacerbation rate in COPD

Background Regular walking activity can improve the prognosis in people with chronic obstructive pulmonary disease (COPD). However, its benefit may be reduced when living in highly polluted areas. Aim To assess the combined effects of walking activity and air pollution on the rat...

Aggregation framework for continuous digital health measures and application to walking activity data

Abstract No standardized procedures for aggregating continuous digital health measures exist. Using a modified Delphi approach, we developed a framework to standardize the selection of aggregations that provide clinically meaningful, stable values. This was applied to aggregate s...