Table 2 The performance of three models in training and test cohorts
| Â | AUC (95%CI) | SEN (%) | SPE (%) | ACC (%) | PPV (%) | NPV (%) |
|---|---|---|---|---|---|---|
Training cohort | ||||||
 PET model | 0.829 (0.794–0.866) | 81.65 | 71.17 | 77.00 | 78.01 | 75.60 |
 CT model | 0.827 (0.791–0.865) | 58.56 | 94.24 | 78.40 | 74.01 | 89.04 |
 Combined model | 0.870 (0.840–0.902) | 79.86 | 80.18 | 80.00 | 83.46 | 76.07 |
Test cohort 1 | ||||||
 PET model | 0.799 (0.732–0.868) | 84.76 | 69.01 | 78.41 | 80.18 | 75.38 |
 CT model | 0.833 (0.772–0.893) | 87.62 | 67.60 | 79.55 | 78.69 | 80.00 |
 Combined model | 0.859 (0.800–0.918) | 89.52 | 73.24 | 82.95 | 83.19 | 82.54 |
Test cohort 2 | ||||||
 PET model | 0.854 (0.791–0.917) | 90.20 | 70.59 | 82.35 | 82.14 | 82.76 |
 CT model | 0.829 (0.763–0.895) | 83.33 | 72.06 | 78.82 | 81.73 | 74.24 |
 Combined model | 0.880 (0.826–0.934) | 86.27 | 79.41 | 83.53 | 86.27 | 79.41 |