Table 1.

Baseline characteristics of 12,269 women with breast cancer by hormone therapy (HT) use.

	HT never users				HT ever users
Characteristics	Never (N=8071)		E-only (N=2258)		E+P (N=1340)		Other/Unknown (N=600)
Age at Diagnosis
50-54	1342	16.63%	335	14.84%	379	28.28%	107	17.83%
55-59	1116	13.83%	445	19.71%	479	35.75%	152	25.33%
60-64	1586	19.65%	497	22.01%	324	24.18%	154	25.67%
65-69	2079	25.76%	517	22.90%	132	9.85%	112	18.67%
70-74	1332	16.50%	344	15.23%	22	1.64%	67	11.17%
75-79	616	7.63%	120	5.31%	4	0.30%	8	1.33%
Menopausal Status
Postmenopausal	7109	88.08%	2094	92.74%	1154	86.12%	550	91.67%
Premenopausal	807	10.00%	35	1.55%	115	8.58%	28	4.67%
Unknown	155	1.92%	129	5.71%	71	5.30%	22	3.67%
Body Mass Index
Less than 22.8	1724	21.36%	577	25.55%	409	30.52%	192	32.00%
22.8-25.5	1878	23.27%	565	25.02%	348	25.97%	152	25.33%
25.6-29.1	2014	24.95%	574	25.42%	314	23.43%	140	23.33%
29.2+	2164	26.81%	493	21.83%	245	18.28%	108	18.00%
Unknown	291	3.61%	49	2.17%	24	1.79%	8	1.33%
Smoking History
Never	3971	49.20%	1114	49.34%	572	42.69%	262	43.67%
Former	2509	31.09%	752	33.30%	524	39.10%	222	37.00%
Current	1575	19.51%	389	17.23%	242	18.06%	115	19.17%
Missing	16	0.20%	3	0.13%	2	0.15%	1	0.17%
History of Mammography Screening
Never	2293	28.41%	249	11.03%	40	2.99%	73	12.17%
Ever	5064	62.74%	1842	81.58%	1263	94.25%	487	81.17%
Unknown	714	8.85%	167	7.40%	37	2.76%	40	6.67%
Extent of Disease/Stage
Local	4836	59.92%	1470	65.10%	914	68.21%	381	63.50%
Regional	2191	27.15%	539	23.87%	322	24.03%	159	26.50%
Distant	249	3.09%	36	1.59%	13	0.97%	10	1.67%
Unknown	795	9.85%	213	9.43%	91	6.79%	50	8.33%
Histologic Type
Lobular	729	9.03%	219	9.70%	155	11.57%	56	9.33%
Non-lobular	7342	90.97%	2039	90.30%	1185	88.43%	544	90.67%