Table 4.

Risk of Breast Cancer-specific Mortality among Current Smokers Stratified by Socio-demographic and Prognostic Factors, the Breast Cancer Health Disparities Study.

	Never Smokers		Current vs. Never Smokers

	Events	Total	Events	Total	HR	95% CI^a	p-value^b
Self-reported ethnicity
NHW	70	651	29	175	1.51	0.96, 2.38	0.98
Hispanic/NA	76	674	20	123	1.58	0.94, 2.64
Native American ancestry
Low	57	593	21	143	1.49	0.88, 2.52	0.92
Moderate/High	47	464	13	74	1.69	0.87, 3.27
Menopausal status
Premenopausal	67	501	20	114	1.41	0.82, 2.42	0.89
Postmenopausal	76	803	26	178	1.65	1.02, 2.64
Body mass index, kg/m²
<25	48	447	21	135	1.33	0.77, 2.29	0.44
≥25	98	878	28	163	1.74	1.13, 2.69
Alcohol consumption
None/Low	134	1155	31	194	1.36	0.91, 2.02	0.15
Moderate/High	12	170	18	104	2.91	1.37, 6.18
Time since diagnosis
≤5 years	69	155	19	42	1.40	0.79, 2.48	0.68
>5 years	77	1170	30	256	1.75	1.12, 2.72
SEER Summary Stage
Local	47	821	17	185	1.66	0.94, 2.94	0.85
Regional/Distant	99	504	32	113	1.53	1.00, 2.34
ER status
Negative	34	246	10	49	1.58	0.75, 3.30	0.86
Positive	85	826	29	190	1.55	1.00, 2.42
PR status
Negative	43	346	16	77	1.72	0.94, 3.15	0.31
Positive	76	726	23	162	1.38	0.85, 2.26

Abbreviations: SEER-Surveillance Epidemiology & End Results; ER-Estrogen receptor; PR-Progesterone receptor

Adjusted for age, study, ethnicity, stage, body mass index, alcohol consumption, and education. When modification by a specific factor was evaluated, that factor was not included as a covariate in the multivariable model;

p -value for interaction term. P-values for likelihood ratio tests (difference in Chi-square test statistics for the models) were not significant.