The Study on the Agreement between Automatic Tongue Diagnosis System and Traditional Chinese Medicine Practitioners

Table 2

A comparison of intraobserver agreements (kappa values) of the ATDS and TCM doctors.

Features	ATDS	TCM doctors (𝑁=12)
Tongue color^***	1.00	0.39±0.18
Fur color^**	0.88	0.83±0.04
Fur thickness^**	1.00	0.68±0.27
Tongue fissure^**	0.90	0.72±0.18
Red dot^***	0.96	0.50±0.15
Ecchymosis^***	1.00	0.71±0.57
Tooth mark^***	0.94	0.59±0.24
Saliva^*	0.86	0.58±0.34
Tongue shape	0.84	0.81±0.09
Mean^†	0.93±0.06	0.64±0.13

Note: one-sample t-test with significance of ^*𝑃<0.05, ^**𝑃<0.01, and ^***𝑃<0.001; two-sample t-test with significance of ^†𝑃<0.001.