Table 2.

Associations of gaseous and particulate matter air pollutants and risk of death following breast cancer diagnosis, CA MEC breast cancer cases, 1993–2013^a.

		All-cause mortality				Breast cancer mortality				CVD mortality				Non-breast cancer and non-CVD mortality^c
		Deaths	HR	95% CI	p-value	Deaths	HR	95% CI	p-value	Deaths	HR	95% CI	p-value	Deaths	HR	95% CI	p-value
LUR	NO_x^b	981	1.16	(0.96–1.40)	0.12	418	1.25	(0.93–1.66)	0.13	240	1.60	(1.08–2.37)	0.02	323	0.91	(0.64–1.30)	0.61
	NO₂^b	1005	1.14	(0.91–1.43)	0.25	428	1.34	(0.95–1.90)	0.09	245	1.49	(0.92–2.40)	0.11	332	0.81	(0.53–1.22)	0.31
Kriging	NO_x^b	1095	1.16	(0.96–1.39)	0.13	461	1.27	(0.96–1.68)	0.09	269	1.37	(0.93–2.02)	0.12	365	0.93	(0.67–1.29)	0.65
	NO₂^b	1111	1.25	(1.00–1.57)	0.05	468	1.45	(1.02–2.07)	0.04	269	1.58	(0.99–2.51)	0.06	374	0.94	(0.64–1.38)	0.75
	PM_2.5^b	1109	1.17	(0.95–1.44)	0.13	465	1.19	(0.86–1.64)	0.29	269	1.44	(0.95–2.17)	0.08	375	0.94	(0.66–1.34)	0.72
	PM₁₀^b	1112	1.13	(1.00–1.29)	0.06	468	1.20	(0.98–1.48)	0.09	269	1.25	(0.97–1.62)	0.09	375	0.96	(0.77–1.21)	0.75

Adjusted for race/ethnicity, marital status, ERPR status, stage, grade, histology, tumor size, chemotherapy, hormone treatment, radiation, surgery, nSES at diagnosis and current nSES, BMI, smoking, alcohol, diabetes, CVD risk, and age at first live birth; and stratified by age at diagnosis

LUR and kriging per 50 ppb NO_X; 20 ppb Kriging and LUR NO₂; Kriging per 10ug/m³ PM₁₀ and PM_2.5

Distribution of cause of deaths: other cancer site than breast cancer (42%), diabetes (9%), chronic lower respiratory disease (9%), Alzheimer’s disease (8%), mental/behavioral disease (5%), pneumonia (5%), kidney disease (3%), liver disease (3%), infectious/parasitic disease (3%), other causes of deaths (5%), unknown cause (8%)