Table 4.
Characteristics of the OPLS-DA models.
| R2X (cum) | R2Y (cum) | Q2 (cum) | Sens (%) | Spec (%) | MCE (%) | |
|---|---|---|---|---|---|---|
| SUVmax high/low | 0.88 | 0.144 | 0.07 | 65 | 60 | 37 |
| MATVWTB high /low | 0.77 | 0.19 | 0.16 | 65 | 71 | 31 |
| TLGWTB high/low | 0.77 | 0.20 | 0.16 | 66 | 72 | 31 |
MATVWTB: metabolic active tumor volume; SUV: standardized uptake value; TLGWTB total lesion glycolysis; R2X: amount of variation within groups; R2Y: amount of variation between groups; Q2: predictive ability determined by internal cross-validation. Sens: sensitivity; Spec: specificity; MCE: misclassification error.