Table 1 Patient and tumor characteristics and association with HT_ever, showing mean and standard deviation (SD) for age at diagnosis and frequency and percentage for all other data.

Characteristic	Value	HT nomean or n	HT noSD or %	HT yesmean or n	HT yesSD or %
Age at diagnosis (year)		63.8	10.2	60.6	7.7
pT	pT0/Tis	21	0.7	5	0.4
	pT1	1 703	54.7	889	64.4
	pT2	1 145	36.8	410	29.7
	pT3	102	3.3	37	2.7
	pT4	141	4.5	39	2.8
Nodal status	pN0	1 953	62.8	931	67.5
	pN+	1 159	37.2	449	32.5
Grading	G1	368	11.8	191	13.8
	G2	2 020	64.9	929	67.3
	G3	724	23.3	260	18.8
ER	ER−	703	22.6	324	23.5
	ER+	2 409	77.4	1 056	76.5
PR	PR−	1 103	35.4	462	33.5
	PR+	2 009	64.6	918	66.5
Chemotherapy	no	2 070	66.5	986	71.4
	yes	1 042	33.5	394	28.6
Antihormonal therapy	no	1 157	37.2	566	41.0
	yes	1 955	62.8	814	59.0