Positive and Negative Predictive Values and Proportion of High-Risk Patients Identified by Interim PET: Comparison of Methods and Thresholds
| Definition of high-risk patients | PPV | NPV | Proportion of high-risk patients |
|---|---|---|---|
| Visual Deauville score 4 or 5 | 38.4% | 75.4% | 39.4% |
| Visual Deauville score 5 | 50.9% | 73.0% | 12.7% |
| Quantitative Deauville score 4 or 5 | 38.4% | 76.1% | 42.3% |
| Quantitative Deauville score 5 | 49.3% | 73.7% | 16.3% |
| qPET ≥ 2.26 | 54.7% | 73.2% | 11.8% |
| ΔSUVmax, ≤66% SUVmax reduction | 56.6% | 73.5% | 11.8% |
PPV = positive predictive value; NPV = negative predictive value.