Figure 2From: Determining utility values in patients with anterior cruciate ligament tears using clinical scoring systems The correlation of ACL scores to the utility values. All scores correlated significantly with the utility values (p < 0.05), however, the correlation was strongest for the IKDC subjective knee score (r = 0.86, 95% CI: 0.81, 0.90). Either linear regression (A and B) or third order polynomial non-linear regression (C) was used to find a curve representing most reasonably the trend of the correlations.Back to article page