Fig. 3.

Receiver operating characteristic curve of models in three scenarios: smartwatch accelerometer data, smartphone accelerometer data, and fusion of both. In order to give every patient an equal weight during the evaluation phase, the area under the curve (AUC) scores were weighted accordingly, giving every patient an inverse weight with respect to the frequency in the population. “Frequency in the population” refers to the number of assessments a specific patient performed divided by the entire collection of assessments from all patients. CV, coefficient of variation.