Comparison of Methods 2–4 Against Cases for Which MPA < 7.4 GBq by Conventional Method 1
| Statistical measure | Blood only, method 2 | Camera only, method 3 | 48-h camera only, method 4 |
| κ | 0.86 (very good agreement) | 0.70* (good agreement) | 0.43* (moderate agreement) |
| McNemar Δ | 0.0%, P = 0.62 | 5.6%, P = 0.29 | 14.1%, *P = 0.02 |
| Sensitivity | 90% | 70% | 40%* |
| Specificity | 96% | 96% | 96% |
| Accuracy | 94% | 89% | 80%* |
| Positive predictive value | 90% | 88% | 80% |
| Negative predictive value | 96% | 89% | 80%* |
↵* P < 0.05 vs. method 2.