Fig. 4: Prediction and ranking results of the ITA models on the test set of the FHF cohort using RHR digital biomarkers.

a ROC and b PRC for the discrimination between COVID-19-positive participants (n = 7) and -negative participants (n = 56). The red dashed line shows the results based on an RTA model. c Positivity rate of the diagnostic testing subpopulation as determined by ITA given a specific number of available diagnostic tests. The red dashed line shows the positivity rate of an RTA (null) model.