Figure 6.

Correlations of the histological scores from microscopic findings and the spectrocolorimetric indices. (a) The a* values are significantly correlated with the Mankin histological score (P = 0.004, r = -0.76). (b) The SRP₄₇₀ values are significantly correlated with the Mankin histological score (P = 0.01, r = 0.67). P < 0.05 by non-parametric Spearman's rank-order correlation.