Table 3 Table demonstrating diagnostic performance of FDG PET/CT scan compared to a reference standard obtained from follow-up imaging and final clinical diagnosis
Disease extension | TP | FN | TN | FP | Sensitivity (conf int) | Specificity (conf int) | PPV (conf int) | NPV (conf int) | Accuracy (conf int) |
|---|---|---|---|---|---|---|---|---|---|
Confined locally | 15 | 14 | 100 | 4 | 51.7% (32–70%) | 96.2% (90–99%) | 79.1% (58–91%) | 87.6% (83–91%) | 86.4% (79–92%) |
Pelvic lymph node involvement | 19 | 16 | 97 | 1 | 54.3% (36–71%) | 98.9% (94–99%) | 96.2% (77–99%) | 82.2% (76–87%) | 84.7% (77–90%) |
Metastatic disease | 53 | 16 | 62 | 2 | 76.8% (65–86%) | 96.9 (89–99%) | 96.4% (87–99%) | 79.4% (71–86%) | 86.4% (79–92%) |