Performance of Various ΔSUVmax Cut-Offs in Predicting Non-pCR in EC-D and SIM Groups
| EC-D | SIM | |||||||||||||
| Cutoff | R | NR | Acc | Se | Sp | PPV | NPV | R | NR | Acc | Se | Sp | PPV | NPV |
| −75 | 13 | 87 | 74 | 89 | 20 | 80 | 33 | 29 | 71 | 75 | 90 | 54 | 72 | 81 |
| −70 | 17 | 83 | 70 | 83 | 20 | 79 | 25 | 47 | 53 | 82 | 81 | 83 | 86 | 77 |
| −65 | 17 | 83 | 70 | 83 | 20 | 79 | 25 | 58 | 42 | 78 | 68 | 92 | 91 | 69 |
| −60 | 30 | 70 | 74 | 78 | 60 | 88 | 43 | 62 | 38 | 78 | 65 | 96 | 95 | 68 |
| −55 | 35 | 65 | 78 | 78 | 80 | 93 | 50 | 64 | 36 | 76 | 61 | 96 | 95 | 66 |
| −50 | 39 | 61 | 83 | 78 | 100 | 100 | 56 | 69 | 31 | 71 | 52 | 96 | 94 | 61 |
| −45 | 44 | 57 | 78 | 72 | 100 | 100 | 50 | 76 | 24 | 67 | 42 | 100 | 100 | 57 |
| −40 | 48 | 52 | 74 | 67 | 100 | 100 | 46 | 82 | 18 | 62 | 32 | 100 | 100 | 53 |
R = metabolic responders (percentage of patients with ΔSUVmax ≥ cutoff); NR = metabolic nonresponders; Acc = accuracy; Se = sensitivity; Sp = specificity; PPV = positive predictive value; NPV = negative predictive value.
Data are percentages (n = 23 for EC-D group and 55 for SIM group).