Figure 3.

Density map of deep neural network predictions in three sets. The training set (A) was used to tune the neural network in a cross-validated manner, healthy samples from the test set (B) were used for verification, and the discovery set (C) contains only people with health conditions to explore cases of accelerated aging. The color bars mark continuous areas containing the same number of people. MAE stands for mean absolute error, R² stands for coefficient of determination.