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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2020 Feb 26;29(3):643–649. doi: 10.1158/1055-9965.EPI-19-0905

Figure 2. Compensation Index (A) and Change in Smoking Intensity (B) for each reduced nicotine content cigarette.

Figure 2.

A) The proportion of nicotine that is recovered by changes in smoking intensity when smokers switch to reduced nicotine content cigarettes. Compensation Index was calculated using the expected reduction in nicotine estimated using ISO methodology. Error bars show 95% confidence intervals, and a confidence interval that does not include zero is indicated by *. B) The percentage change in smoking intensity that would be required to obtain the compensation index is shown in Figure 2B. HT=high tar