Proposed cut off points for radiological progression according to the radiographic procedure and to the risk chosen (see results section for details). For example, in a study performed using guidelines without fluoroscopy, a change over 0.73 (at the 5% risk level) will define structural progression of the disease
| Cut off points for radiological progression (mm) | |||
|---|---|---|---|
| risk 5% | risk 10% | risk 20% | |
| Healthy volunteers | |||
| No guidelines | 1.29 | 1.08 | 0.85 |
| Guidelines without fluoroscopy | 0.73 | 0.61 | 0.47 |
| Guidelines with fluoroscopy | 0.59 | 0.49 | 0.38 |
| Knee OA patients | |||
| Guidelines without fluoroscopy | 0.62 | 0.52 | 0.41 |