Table 1.

Clinical and pathological data

Parameter number	Category	n
Node status	Positive	54
	Negative	73
Tumour grade	1	24
	2	43
	3	58
Tumour type	Ductal	98
	Lobular	14
	Medullary	2
	Tubular	2
	Mucinous	4
	Other	7
TNM staging	1	70
	2	40
	3	7
	4	4
NPI	1	68
	2	38
	3	16
Clinical outcome	Disease-free	90
	With local recurrence	5
	Alive with metastasis	7
	Died of breast cancer	16

Missing values reflect discarded/un-interpretable values. NPI: Nottingham Prognostic Index.