Figure 5: Self-reported, Estimated Under-reported and Estimated Total Cigarettes per Day (CPD).
Self-reported, estimated under-reported and estimated total CPD based on nicotine exposure using participants’ UB cigarettes as reference. A: average estimates based on the nicotine content in filler and FTC smoke nicotine yield compared to plasma cotinine from Benowitz et al. [22] ; B: estimates based on FTC nicotine yield compared to urinary cotinine from Hammond and O'Connor [9] ; C: average estimates based on FTC nicotine yield compared to urinary cotinine and urinary nicotine from Mercincavage et al. [10] , all with UB cigarettes as the reference. The numbers in the parentheses next to the product name at the bottom indicate the nicotine content per gram of tobacco filler of the cigarettes used in the studies.
Self-reported, estimated under-reported and estimated total CPD based on nicotine exposure using participants’ UB cigarettes as reference. A: average estimates based on the nicotine content in filler and FTC smoke nicotine yield compared to plasma cotinine from Benowitz et al. [22] ; B: estimates based on FTC nicotine yield compared to urinary cotinine from Hammond and O'Connor [9] ; C: average estimates based on FTC nicotine yield compared to urinary cotinine and urinary nicotine from Mercincavage et al. [10] , all with UB cigarettes as the reference. The numbers in the parentheses next to the product name at the bottom indicate the nicotine content per gram of tobacco filler of the cigarettes used in the studies.
