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Table 2 Adequacy diagnostic measures

From: Is PET–CT an accurate method for the differential diagnosis between chondroma and chondrosarcoma?

  SUV ≥ 2.0
Estimate (IC 95 %)
SUV ≥ 2.2
Estimate (IC 95 %)
True positives 19 18
False positives 4 1
False negatives 0 1
True negatives 13 16
Prevalence by SUV 63.9 % (46.2–79.2 %) 52.8 % (35.5–69.6 %)
Real Prevalence 52.8 % (35.5–69.6 %) 52.8 % (35.5–69.6 %)
Sensitivity 100.0 % (75.1–100.0 %) 94.7 % (74.0–99.9 %)
Specificity 76.5 % (50.1–93.2 %) 94.1 % (71.3–99.9 %)
Positive predictive value 82.6 % (61.2–95.0 %) 94.7 % (74.0–99.9 %)
Negative predictive value 100.0 % (66.1–100.0 %) 94.1 % (71.3–99.9 %)
Accuracy 88.9 % (73.9–96.9 %) 94.4 % (81.3–99.3 %)