Attributable fraction of tobacco smoking on cancer using population-based nationwide cancer incidence and mortality data in Korea

Table 2 Lung cancer cases and deaths among never-smokers attributable to passive smoking in Korea (2009)

	Gender	Prevalence^a(%) of passive smoking	RR^bfor lung cancer	PAF (%)	Lung cancer incidence cases/deaths among never-smokers	Passive smoking-related lung cancer cases/deaths	Sources of pooled RR
Incidence
Exposure to smoking at home	Men	14.8	1.00 (0.67-1.48)	-	1,109	0	[37, 52, 53]
	Women	60.1	1.32 (1.13-1.55)	16.3	4,809	783	[37–44, 46, 47, 49–51, 53, 55–58]
Exposure to smoking at workplace	Men	42.2^c	1.15 (0.74-1.77)	5.9	1,109	66	[52]
	Women	14.7^c	1.37 (1.18-1.60)	5.2	4,809	251	[42, 44, 51, 55–58]
Exposure to smoking at home or workplace	Men			5.9	1,109	66
	Women			20.7	4,809	994
% of all cancers	Men					0.1
	Women					1.1
Mortality
Exposure to smoking at home	Men	14.8	1.34 (0.82-2.17)	4.8	544	26	[48]
	Women	60.1	1.32 (0.95-1.83)	16.1	3,543	571	[45, 48]
Exposure to smoking at workplace^d	Men	42.2^c	1.15 (0.74-1.77)	5.9	544	32	[52]
	Women	14.7^c	1.37 (1.18-1.60)	5.2	3,543	185	[42, 44, 51, 55–58]
Exposure to smoking at home or workplace	Men			10.5	544	57
	Women			20.5	3,543	726
% of all cancers (aged 20+ years)	Men					0.1
	Women					2.8

^aPrevalence of passive smoking at home or workplace was estimated by extrapolating the data from the Korea National Health and Nutrition Examination Survey in 2007, 2008, 2009, 2010, 2011 and 2012. [17].
^bRRs obtained from a meta-analysis.
^cPrevalence for passive smoking at the workplace in the Korean population was calculated by exposure prevalence at the workplace ×% employed adults in Korea in 1989: 71.2% in men, 45.7% in women (Statistics Korea) [60].
^dRR for cancer incidence was used for cancer mortality.

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