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. 2018 Jul 12;11(3):348–357. doi: 10.1177/1947603518786543

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Figure 5. — Bivariate linear correlations assessed using Pearson’s correlation coefficient. (A) Inverse correlation between quantitative parameter (QP) and O’Driscoll histological grading score. Correlation coefficient (r = −0.545), corresponding P value (P < 0.001). (B) Inverse correlation between QP and Oswestry arthroscopy score (OAS). Correlation coefficient (r = −0.655), corresponding P value (P < 0.001). (C) Inverse correlation between quantitative QP and red color intensity (%) (glycosaminoglycan distribution). Correlation coefficient (r = −0.506), corresponding P value (P = 0.001) (For interpretation of the references to colours in this figure legend, refer to the online version of this article).