Figure 3.

Observed vs. predicted average total MADRS score using different digital technology features. The green diagonal line represents a perfect match between observed and predicted MADRS total scores. In case of a strong linear relationship between MADRS total score and selected features, the observations are expected to fall along the green diagonal line. The gray dashed horizontal line at 10.5 represents a classification threshold: when predicted MADRS total scores for healthy subjects are above 10.5 or similar values for depressed subjects are below 10.5, these observations would be misclassified based on the linear model classifier. PHQ2 is a self-reported score of mood assessment. SMI is a subjective memory impairment score.