Fig. 2

The differences and residuals between the actual and predicted ICARS scores. A Displayed the differences between the predicted and actual ICARS scores for all subjects. Different colored dots were used for predicted ICARS scores (y-axis) vs true ICARS scores (x-axis), with a red regression line of optimal fitting of points, and a shadow representing 95% confidence interval of this line. The dotted black line was the ideal line, where true equaled predicted ICARS scores. B in this figure showed the residual of ICARS (predicted minus actual values) versus disease duration. The dotted black line was the center line of zero. Different colored dots illustrated the residual (y-axis) versus disease duration (x-axis) for different subjects