Table 5.
Predictive values of SUVmax (A) and MTV (B) groups in the prediction of CR before dCRT, by ROC analysis
| Groups | AUC | Se (%) | Sp (%) | 95% CI
|
P-value | |
|---|---|---|---|---|---|---|
| Lower | Upper | |||||
|
A
| ||||||
| G1 | 0.558 | 1.00 | 18.2 | 0.371 | 0.746 | 0.559 |
| G2 | 0.562 | 0.731 | 0.4 | 0.359 | 0.764 | 0.572 |
| G3 | 0.703 | 88.2 | 42.1 | 0.532 | 0.875 | 0.038 |
| G4 | 0.857 | 58.3 | 91.3 | 0.730 | 0.984 | 0.001 |
|
| ||||||
|
B
| ||||||
| G1 | 0.589 | 0.765 | 0.5 | 0.389 | 0.778 | 0.400 |
| G2 | 0.436 | ND | ND | 0.242 | 0.631 | 0.516 |
| G3 | 0.711 | 68.4 | 68.7 | 0.539 | 0.882 | 0.034 |
| G4 | 0.824 | 100.0 | 56.0 | 0.691 | 0.957 | 0.002 |
Abbreviations: SUVmax, maximum standardized uptake value; MTV, metabolic tumor volume; CR, complete response; dCRT, definitive chemoradiotherapy; ROC, receiver-operating characteristic; AUC, area under the ROC curve; Se, sensitivity; Sp, specificity; G, group; ND, no difference.