Logistic regression analysis with cancer/benignity as outcome
| OR | p Value | |
| VDT group 1 | 1 | – |
| VDT group 2 | −0.4 | 0.765 |
| VDT group 3 | 3.3 | 0.006 |
| PET group I | 1 | – |
| PET group II | −0.8 | 0.613 |
| PET group III | 1.4 | 0.443 |
| PET group IV | 3.7 | 0.003 |
PET, positron emission tomography; VDT, volume doubling time.