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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Addiction. 2016 Nov 28;112(2):349–359. doi: 10.1111/add.13636

Table 1.

Regression analyses for effects of nicotine content on estimated cigarette consumption at $4.00, $10.00, and $20.00/pack.

$4.00/pack $10.00/pack $20.00/pack
Group Estimated reduction from the 15.8 mg/g group (95% CI) p Estimated reduction from the 15.8 group (95% CI) p Estimated reduction from the 15.8 group (95% CI) p
5.2 2.61 (−0.06, 5.28) 0.06 2.05 (−0.06, 4.15) 0.06 0.88 (−0.62, 2.38) 0.25
2.4 6.16 (3.45, 8.86) <.01* 4.52 (2.39, 6.66) <.01* 1.53 (0.01, 3.05) 0.05
1.3 7.52 (4.85, 10.20) <.01* 5.02 (2.91, 7.14) <.01* 2.63 (1.12, 4.14) <0.01*
0.4 9.50 (6.81, 12.19) <.01* 5.55 (3.43, 7.67) <.01* 2.28 (0.77, 3.80) <0.01*
0.4 (HT) 8.26 (5.61, 10.91) <.01* 4.73 (2.64, 6.82) <.01* 2.37 (0.88, 3.86) <0.01*

An asterisk indicates p<0.0125 for the comparison with the 15.8 mg/g group.