Systematic review of the epidemiological evidence comparing lung cancer risk in smokers of mentholated and unmentholated cigarettes

Table 19 Risk of lung cancer by long-term use of mentholated cigarettes^a (adjusted for age, gender, race, smoking habits and other variables^b)

		RR (CI)
Study	Exposure^c	Males	Females	White people	Black people	Total
American Health Foundation 1 [68]	15+ years use of M (in current smokers)	0.98 (0.70-1.38)	0.76 (0.53-1.16)			0.88 (0.68-1.14)
Kaiser Permanente [51]	20+ years use of M (in current smokers for 20+ years)	1.59 (0.96-2.63)	0.70 (0.40-1.23)			1.10 (0.76-1.60)
Los Angeles [69]	32+ pack-years M (in ever smokers)	1.48 (0.71-3.05)	0.41 (0.15-1.11)	1.06 (0.47-2.36)	0.90 (0.38-2.12)	0.95 (0.53-1.70)
Slone Epidemiology Center study [53]	15+ years of M (in ever smokers)	0.91 (0.57-1.46)	1.00 (0.63-1.60)	1.01 (0.68-1.51)	1.21 (0.64-2.26)	0.97 (0.70-1.34)

^a Mentholated cigarettes abbreviated to M in the table; reference group is those with no use of mentholated cigarettes.
^b Details of all adjustment variables are given in Table 14.

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