Fig. 3From: The use of exhaled air analysis in discriminating interstitial lung diseases: a pilot studyVOC profiling for IPF versus controls. A ROC curve of the 34-VOC IPF versus controls profile. The AUC is 91.2%. B 3D PCA plot of Random Forests proximities comparing IPF and controls. The distance between individual points expresses their similarity, i.e. short distance indicates s highly similar VOC profile and vice versaBack to article page