Statistical machine learning of sleep and physical activity phenotypes from sensor data in 96,220 UK Biobank participants.

Abstract excerpt

Current public health guidelines on physical activity and sleep duration are limited by a reliance on subjective self-reported evidence. Using data from simple wrist-worn activity monitors, we developed a tailored machine learning model, using balanced random forests with Hidden Markov Models, to reliably detect a number of activity modes. We show that physical activity and sleep behaviours can be classified with...

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