Metabolomic Markers in Tongue-Coating Samples from Damp Phlegm Pattern Patients of Coronary Heart Disease and Chronic Renal Failure

Table 1

Summary of demographics and clinic characteristics of CHD patients, CRF patients, and healthy subjects.

Group	Cases	Ratio of male to female	Average age	Average course of disease (year)
Healthy subjects	25	1 :  0.79		N/A
CHD showing the damp phlegm pattern	29	1 :  0.81
CHD showing the nondamp phlegm pattern	29	1 :  0.61
CRF showing the damp phlegm pattern	32	1 :  0.60
CRF showing the nondamp phlegm pattern	30	1 : 1.14