Using association rules mining to explore pattern of Chinese medicinal formulae (prescription) in treating and preventing breast cancer recurrence and metastasis

Table 7 The pairs of herbal functions being used among the formulae

Herb functions (LHS, X)	Number of formulae		Herb functions (RHS, Y)	Number of formulae	Support (X) (%)	Confidence (X => Y) (%)
Blood-tonifying	44	→	Qi-tonifying	41	42.71	93.18
Yin-tonifying	40	→	Qi-tonifying	37	38.54	92.50
Phlegm-resolving	37	→	Qi-tonifying	34	35.42	91.89
Spleen-fortifying and dampness-resolving	51	→	Qi-tonifying	46	47.92	90.20
Qi-regulating	29	→	Qi-tonifying	27	28.13	93.10
Yang-tonifying	36	→	Qi-tonifying	32	33.33	88.89
Heat-clearing and detoxicating	53	→	Qi-tonifying	46	47.92	86.79
Blood-activating and stasis-resolving	56	→	Qi-tonifying	47	48.96	83.93
Blood-activating and stasis-resolving	56	→	Heat-clearing and detoxicating	35	36.46	62.50
Heat-clearing and detoxicating	53	→	Spleen-fortifying and dampness-resolving	32	33.33	60.38
Blood-tonifying	44	→	Yin-tonifying	27	28.13	61.36

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