Table 6. Cronbach’s alpha coefficients for nine sub-scales

Sub-scales	Number of Question	Cronbach’s alpha
Neutral	1,2,7,8,22,23,53,54	0.73
Qi-deficiency	2,3,4,5,6,7,27	0.70
Yang-deficiency	18,19,20,22,23,52, 55,58	0.76
Yin-deficiency	18,19,20,22, 23, 52,55,58,38,44,46	0.76
Phlegm-dampness	14,16,28,42,47,49,50,51	0.78
Dampness-heat	39,41,46,48,49,56,57,59,60	0.78
Blood-stasis	33,35,36,37,40,43,44,45	0.71
Qi-depression	9,10,11,12,13,15,47	0.83
Inherited-special	24,25,26,30,31,32,34	0.77