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(A) Standing radiographs. Differences in joint space width (JSW) (in mm) for standing radiographs between two reading sessions against the mean for all hips. Limits of agreement correspond to mean ±2SD. (B) Supine radiographs. Differences in joint space width (JSW) (in mm) for supine radiographs between two reading sessions against the mean for all hips. Limits of agreement correspond to mean ±2SD.
