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. 2016 Jun 27;11(6):e0155898. doi: 10.1371/journal.pone.0155898

Table 4. Performance of ultrasonography in each Bethesda category.

Bethesda category Sensitivity (%) Specificity (%) PPV (%) NPV (%) Accuracy (%)
Category I 88.9 92.9 57.1 98.8 92.5
Category II 62.5 96.5 31.3 99.0 95.6
Category III 66.7 73.3 60 78.6 70.8
Category IV 50 97.0 50 97.0 94.3
Category V 95 - 100 0 95.0
Category VI 92.4 - 100 0 92.4