Table 2.

Characteristics of Patients With Breast Cancer in the Independent Sample From the Target Population^* From an Integrated Health Care System Who Received Chemotherapy in 2006-2009

Characteristic	Overall		Age at Diagnosis (years)
			< 65		≥ 65
	No.	%	No.	%	No.	%
Total	1,575	100	1,277	100	298	100
Age, years
< 54	779	49	779	61	N/A	N/A
55-64	498	32	498	39	N/A	N/A
65-74	250	16	N/A	N/A	250	84
≥ 75	48	3	N/A	N/A	48	16
Race
Asian	218	14	204	16	14	5
Black	137	9	118	9	19	6
White	1,075	68	826	65	249	84
Other	145	9	129	10	16	5
Hispanic†
No	1,369	87	1097	86	272	91
Yes	204	13	178	14	26	9
AJCC6 stage‡
1	470	30	392	31	78	26
2a/2b	771	49	620	49	151	51
3a/3b/3c/	319	20	252	20	67	22
Anthracyclines
No	476	30	340	27	136	46
Yes	1,099	70	937	73	162	54
Taxanes
No	530	34	404	32	126	42
Yes	1,045	66	873	68	172	58
Trastuzumab
No	1,251	79	1,010	79	241	81
Yes	324	21	267	21	57	19

Abbreviations: AJCC, American Joint Committee on Cancer; N/A, not applicable.

^*Study population from Kwan et al.²⁴

^†Two patients with unknown ethnicity.

^‡Fifteen patients with unknown stage.