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Fig. 2 | Environmental Health and Preventive Medicine

Fig. 2

From: Smoking topography and biomarkers of exposure among Japanese smokers: associations with cigarette emissions obtained using machine smoking protocols

Fig. 2

a Salivary cotinine concentrations, b puff volume/day, c CO concentrations in expiratory breath by cigarette nicotine yield categorization. The number of participants was 94 for the saliva samples, 100 for the puff volume/day measurements, and 101 for the CO in expiratory breath samples. The correlation between puff volume/day and nominal nicotine yield was r = −0.295, p = 0.003 (n = 100). p values in the figures are results of multiple comparison applying the Bonferroni method. Horizontal lines Median salivary cotinine concentrations, puff volume/day, and CO concentrations. Open symbol Outliers

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Environmental Health and Preventive Medicine

ISSN: 1347-4715

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