Comparison Between Parameter-Identification and Parameter-Validation Groups, with Statistical Significance of Group Difference
| Parameter | Identification | Validation | P |
|---|---|---|---|
| PET scans (individual patients) | 80 (49) | 40 (20) | 0.327* |
| Male sex (% of scans) | 60 | 70 | 0.320* |
| Age (y) | 0.225† | ||
| Median | 60.7 | 60.1 | |
| Range | 44.8–78.9 | 44.7–71.9 | |
| Mean administered activity ± SD (MBq) | 207 ± 40.1 | 200 ± 35.8 | 0.314‡ |
| Plasma glucose concentration (mmol·L−1) | 0.125† | ||
| Median | 5.3 | 5.3 | |
| Range | 4.2–10.0 | 4.2–8.3 | |
| BMI (kg·m−2) | 0.508† | ||
| Median | 25.8 | 25.9 | |
| Range | 22.7–27.4 | 19.8–33.7 | |
| Cancer localization (% of scans) | 0.618* | ||
| Lung (non–small cell) | 50 | 50 | |
| Colorectal | 45 | 40 | |
| Breast | 5 | 10 |