Table 1.

Clinical and Demographic Predictors for Breast Cancer Survival, the Shanghai Breast Cancer Survival Study

Subject characteristic		N	5-year overall survival
			Deaths	Rate (%)	P
Age at diagnosis	<40	242	23	89.3
	40-49	2002	141	91.9
	50-59	1489	134	88.6
	>=60	1300	146	86.4	<0.01
Education	None	190	30	78.8
	Elementary	396	59	82.4
	Middle or high school	3642	313	90.0
	College and above	804	42	93.3	<0.01
Income*	<700	1403	165	87.0
	700-999	1484	148	88.0
	1000-1999	1541	105	91.8
	>=2000	602	26	93.4	<0.01
BMI	<25	3273	267	90.3
	25-29	1476	138	88.7
	>=30	280	37	83.9	0.01
Menopausal status	Pre	2461	186	91.3
	Post	2572	258	87.5	<0.01
Tamoxifen use	No	2408	250	87.5
	Yes	2622	193	91.1	<0.01
TNM	0-II	4318	280	91.9
	III-IV	492	147	65.6
	Unknown	223	17	92.1	<0.01
ER status	ER-	1772	224	85.2
	ER+	3181	202	92.0
	Missing	80	18	76.5	<0.01
PR status	PR-	2043	238	86.0
	PR+	2894	187	92.1
	Missing	96	19	79.4	<0.01
Chemotherapy	No	444	39	88.5
	Yes	4589	405	89.5	0.95
Radiotherapy	No	3418	227	91.5
	Yes	1615	207	84.9	<0.01
Radical mastectomy	No	373	29	90.6
	Yes	4660	415	89.3	0.77
HRT use**	No	2388	250	87.0
	Yes	175	8	94.6	0.01
Number of pregnancies	0	202	21	88.7
	1	987	91	89.1
	2	1669	120	91.7
	3	1168	101	89.3
	>3	1007	111	86.5	0.03
Family history of cancer***	No	4728	423	89.3
	Yes	305	21	91.1	0.29
Co-morbidity score	0	4031	341	90.1
	>=1	1002	103	86.7	0.06

^*Unit: (RMB/person/month), 1 USD=6.75RMB currently.

^**Among post-menopausal women

^***Family history of breast cancer or ovarian cancer