Table 5.

Ever WS exposure on lung cancer incidence and call-cause and disease-specific mortality

Endpoint	WS exposure	N	Event	Person-yeara	HR (95%CIb	P
LC incidence	Yes	684	22	41,134	1.53 (0.92–2.55)	0.10
	No	1688	50	105,020
All cause mortality	Yes	683	108	41,358	1.53 (1.21–1.92)	0.0003
	No	1688	272	105,980
CPD mortalityc	Yes	683	41	41,358	1.49 (1.03–2.15)	0.033
	No	1688	114	105,980
Cancer mortalityd	Yes	683	35	41,358	1.52 (1.02–2.28)	0.041
	No	1688	84	105,980

CPD cardiopulmonary disease, HR hazard ratio, LC lung cancer, WS woodsmoke

^aPerson-year was calculated as age at last alive LC-free contact or age at LC diagnosis for lung cancer incidence analyses or age at last alive contact or age at death for mortality analyses. Age at death was missing for one subject with ever WS exposure

^bBaseline values of age, smoking status, and packyears, sex, and ethnicity were included in Cox proportional hazards model for covariate adjustment for LC incidence. Education and income were included for additional covariate adjustment for mortality

^cDeaths due to non-CPD causes were censored at the date of death

^dDeaths due to non-cancer causes were censored at the date of death