CHAN03
Main technical-validation text calls coefficients 0.9642/0.9911/0.9721 IC Cs; Supplement Table 2 labels those same values Pearson correlation coefficients. Supplement visually prints trunk RMSE 0.8069° andbias 0.9014°. For the same error distribution RMSE cannot be below absolute mean bias; aggregation/definition details or errors require clarification. Do not label true corrected values.
This is a source-level discrepancy, unresolved method or evidence concern. It is not permission to substitute an inferred corrected value or use a threshold clinically.
Report locations: P0204
Sit to stand assessment and prognosis in knee osteoarthritis · KOA sit to stand evidence boundaries