Fig. 6. Stacked Histogram of distribution of responses by obesity syndrome differentiation. X-axis was arranged in question cluster order and red vertical lines represent the cluster divider. Y-axis indicates frequency of responses according to the score and each score is marked with different colors. FR: food retention, LS: liver qi stagnation, YD: yang deficiency, PH: phlegm, SD: spleen deficiency, BS: blood stasis.