Figure 6From: A methodology to ensure and improve accuracy of Ki67 labelling index estimation by automated digital image analysis in breast cancer tissueOrthogonal linear regression analysis. Reference values as explanatory variable and the DIA-2 as dependent variable (yellow) taking into account an ellipse of 95% confidence interval (orange) defined the sampling theory (n = 164 n = 164, P <0.0001, equation of the line: y = 0.877x + 0.012). DIA, digital image analysis.Back to article page