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Table 1 Improved Mankin scoring system of cartilage in the OA and control groups (mean ± SD)

From: The expression of SIRT1 in articular cartilage of patients with knee osteoarthritis and its correlation with disease severity

Group Sample (n) Mankin score
Normal 9 0.44 ± 0.53
Mild OA 10 3.70 ± 1.06
Moderate OA 13 7.54 ± 1.05
Severe OA 15 12.20 ± 1.37