Fig. 8From: Exosomal microRNAs are novel circulating biomarkers in cigarette, waterpipe smokers, E-cigarette users and dual smokersROC curve evaluation for the diagnostic utility. ROC curve showed that both the sensitivity and specificity of the miRNA hsa-let-7a-5p marker for distinguishing normal subjects from tobacco users are greater than 80% according to the optimal Youden Index point, which captures the performance of a dichotomous diagnostic test. TRP: true positive rate; FPR: false positive rateBack to article page