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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2016 Jan 25;25(4):624–633. doi: 10.1158/1055-9965.EPI-15-0760

Figure 1.

Figure 1

Charts depicting the joint effects of raw garlic consumption and selected risk factors in association with lung cancer. G+: any raw garlic intake; G-: no raw garlic intake; A+: age ≥55 years; A-: age <55 years; S+: ever smokers; S-: never smokers; IP+: high indoor air pollution; IP-: low/no indoor air pollution; Al+: alcohol ever drinkers; Al-: alcohol never drinkers; T+: Tea ever drinkers; T-: Tea never drinkers; Sp+: supplement users; Sp-: Supplement non-users. a adjusted for age (in years, except for interaction with age), sex, average household income 10 years ago (<1000 = 1, 1000-2499 = 2, 2500-4999 = 3, ≥5000 = 4), pack years of smoking (continuous, except for interaction with smoking), and indoor air pollution (an index of 0 = none, 1-2 = low and 3-5 = high indoor air pollution, except for interaction with indoor air pollution); b supplemental use includes intake of one or more of the following: vitamin A, beta-carotene, vitamin C, vitamin E, calcium, selenium, zinc or multivitamins. ✩ additive interaction between indoor air pollution and raw garlic consumption (RERI = 0.37, 95% CI: 0.05–0.68) as well as supplement use and raw garlic consumption (RERI = 0.41, 95% CI: 0.08–0.74)