Table 2.

Comparison between latent variables and existing CM syndromes

Latent variablesa			CM syndromes
			1	2	3	4	5	6	7	8	9	10
Y18	Y18 = s0	Y18 = s1
	0.43	0.57
Thirst	0.07	1	●
Favour of drinking	0.18	0.78	●
Y17	Y17 = s0	Y17 = s1
	0.34	0.66
Dry mouth	0.39	1			●	●			●		●
Dry throat	0.01	0.53			●	●			●		●
Bitter taste	0.19	0.64	●	●	●				●
Agitation	0.33	0.66				●
Y16	Y16 = s0	Y16 = s1
	0.62	0.38
Weary limbs	0.31	1						●
Sore knees	0.21	0.83				●			●		●
Hypochondriac pain	0.01	0.29	●		●
Backache	0.51	0.88			●	●			●		●
Pain in the chest and hypochondrium	0	0.15	●
Aphthous stomatitis	0.2	0.53			●						●
Y15	Y15 = s0	Y15 = s1
	0.81	0.19
Heavy headedness	0.18	0.88		●
Head distension	0.25	0.91	●
Difficulty falling asleep alone	0.02	0.25								●
Y14	Y14 = s0	Y14 = s1
	0.69	0.31
Insomnia with vexation	0.05	0.64				●			●		●
Restless sleep	0.48	0.93		●		●					●
Vexation in sitting and lying down	0	0.21								●
Difficulty staying asleep	0.79	1				●			●	●	●
Y13	Y13 = s0	Y13 = s1
	0.82	0.18
Sleeping late at night	0.29	1			●	●					●
Frequent awakening with a start	0.14	0.75								●		●
Half asleep	0.35	0.94						●
Poor memory	0.93	0.66			●			●	●		●
Y12	Y12 = s0	Y12 = s1
	0.48	0.52
Headache	0.25	0.82	●	●	●
Excessive dreaming	0.38	0.91	●		●			●	●	●	●	●
Night sweating	0.06	0.55			●	●					●
Feverish sensations in the palms soles and chest	0.02	0.43			●	●			●		●
Tinnitus	0.18	0.54	●		●	●			●		●
Y11	Y11 = s0	Y11 = s1
	0.88	0.12
Nausea	0.01	1		●
Poor appetite	0.16	0.82	●	●		●		●	●
Y10	Y10 = s0	Y10 = s1
	0.61	0.39
Fright palpitation	0.03	0.41									●
Dyspnea	0.15	0.58								●		●
Tasteless	0.01	0.27						●
Lassitude	0.78	1					●
Oppression in the chest	0.18	0.53	●	●		●						●
Cold extremities	0.23	0.59									●
Y09	Y09 = s0	Y09 = s1
	0.46	0.54
Frequent sighing	0.09	0.73	●
Fatigue	0.27	0.81	●		●
Vexation	0.14	0.64	●	●	●	●			●	●	●
Unrefreshing sleep	0.72	0.99				●
Dizziness	0.09	0.46	●	●	●	●		●	●		●
Difficulty falling asleep with vexation	0.23	0.63				●					●
Palpitation	0.06	0.34			●			●	●	●	●	●
Y08	Y08 = s0	Y08 = s1
	0.39	0.61
Thoughtful	0.34	1								●
Y07	Y07 = s0	Y07 = s1
	0.39	0.61
Impatience	0.09	0.92	●		●						●
Irritability	0	0.71	●		●						●
Y05	Y05 = s0	Y05 = s1
	0.55	0.45
Belching	0.25	0.96		●		●	●
Gastric stuffiness	0.03	0.42		●		●						●
Stuffiness and pain in stomach and abdomen	0.06	0.38				●
Stuffiness in stomach and abdomen	0.13	0.48				●
Profuse sputum	0.12	0.43		●
Difficulty falling asleep	0.68	0.93	●		●	●		●	●	●	●
Hypochondriac distension	0.02	0.17	●
Y04	Y04 = s0	Y04 = s1
	0.76	0.24
Acid regurgitation	0.15	1		●					●
Insomnia	0.56	1		●					●

CM syndrome 1–10 refers to Liver-qi stagnation transforming into fire, Internal disturbance of phlegm-heat, Liver fire flaming upward, Stomach disharmony, Stomach qi disharmony, Deficiency of both the heart and spleen, Hyperactivity of fire due to yin deficiency, Qi deficiency of the heart and gallbladder, Heart-kidney noninteraction, and Heart deficiency with timidity, respectively. The dots represent that the clinical features are often present in the CM syndromes

^aThe latent variables are presented starting from the bottom of the latent tree model