| Analysis of RFCSA | n | Bias (SD (%) | 95% limits of agreement (%) |
| Visit: 1st vs 2nd (L and R legs) | 16 | 1.5 (19.2) | −16.7 to 19.5 |
| Operator: A vs B (same visit) | 20 | 0.5 (5.9) | −11.1 to 12.0 |
Operator A = Clinician, B = Radiologist; visits 1 and 2 separated by >2 weeks.