Figure 2.
Scree plot of characteristic root value of common factors. (a) Scree plot of characteristic root value of common factors for entire dataset; (b) Scree plot of characteristic root value of common factors for Shi TCM syndrome group; (c) Scree plot of characteristic root value of common factors for Xu TCM syndrome group; (d) Scree plot of characteristic root value of common factors for Mix TCM syndrome group.