Fig. 3From: Detection of volatile sulfur compounds (VSCs) in exhaled breath as a potential diagnostic method for oral squamous cell carcinomaROC curves for the diagnosis of oral cancer using volatile sulfur compounds: A hydrogen sulfide, B methyl mercaptan, C total sulfur, and D the ratio of CH3SH to H2S. E A new variable calculated from logistic regression was utilized, and the ROC curve was drawnBack to article page