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. 2015 Oct 24;18(5):531–537. doi: 10.1093/ntr/ntv233

Table 2.

Baseline Correlations of Cigarette Purchase Task Demand Indices and Related Variables

Breakpoint O max Elasticity FTND Cigs/d
Intensity 0.14* 0.40** −0.34** 0.44** 0.54**
Breakpoint 0.75** −0.91** 0.07 0.02
O max −0.88** 0.27** 0.23**
Elasticity −0.23* −0.17*
FTND 0.45**

FTND = Fagerström Test of Nicotine Dependence 17 total score.

* P < .01; ** P < .001.