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. 2018 Jun 14;75(10):995–1002. doi: 10.1001/jamapsychiatry.2018.1831

Figure 3. Percentage of Days Smoked at Baseline vs End of Study.

Figure 3.

Data are mean percentages of days with any smoking during the baseline and weeks 9 to 10 by treatment group. Observed data are plotted (mean [SE]). Analysis indicated that, while controlling for baseline smoking day percentage, the very low-nicotine-content cigarettes (VLNCC) group (n = 91) reduced their days smoking percentage significantly more than the normal-nicotine-content cigarettes (NNCC) group (n = 99) over the 10-week postrandomization period (P < .001). Mean decrease among the VLNCC group was 17% (95% CI, 9%-25%) more than the NNCC group.