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 %) |