Table 2.

Demographic and Tumor Characteristics by Use of Breast-conserving Surgery

		AAPI
	White Americans % BCS	U.S.-born % BCS	Foreign-born % BCS	Unknown % BCS
Overall	59	56	43	45
Demographic characteristics
Age at diagnosis, y
<40	55	54	44	46
40–49	60	57	44	48
50–59	63	56	43	47
60–69	60	55	43	42
≥70	57	55	39	40
Marital status (P=.99)
Married	60	56	43	45
Not married	59	56	43	45
Tumor registry*
Hawaii	60	56	46	48
Los Angeles	61	53	39	38
SF/Oakland	61	57	51	49
San Jose/Monterey	52	38	35	34
Seattle/Puget Sound	60	60	52	53
Tumor characteristics
Stage*
I	69	63	54	53
II	46	43	32	34
Lymph nodes*
Negative	64	59	47	46
Positive	50	45	34	42
Tumor size,* cm
1 or less	70	65	52	54
1–2	64	58	51	49
2–3	49	49	36	35
3–4	33	26	21	25
4–5	22	21	11	16
Grade*
Well-differentiated	71	67	56	57
Moderately differentiated	61	58	47	46
Poor/undifferentiated	54	48	37	40
Histology (P=.72)
Ductal	61	56	43	45
Lobular	49	47	38	40
Mixed duct/lob	52	51	39	43
Estrogen receptor status*
Positive	61	57	46	48
Negative	56	50	40	37
Progesterone receptor status*
Positive	62	57	46	49
Negative	57	53	41	38

^*Pvalue<.0001 by Cochran-Mantel-Haenszel test for homogeneity across strata.

AAPI, Asian American/Pacific Islander; BCS, breast-conserving surgery.