Patient Characteristics
| Characteristic | Bone-positive group | Bone-negative group | P |
| Number of scans | 20 | 18 | |
| Mean age (y) | 73.4 (6.7) | 67.2 (8.2) | 0.05 |
| Mean Gleason score | 8.1 (0.9) | 7.2 (0.9) | 0.06 |
| Disease duration before scan (y) | 7.0 (3.7) | 5.8 (4.8) | 0.51 |
| Mean number of bone lesions (determined visually) | 42.6 (30.2) | 0 | <0.001 |
Data in parentheses are SDs.