. Author manuscript; available in PMC: 2014 Nov 1.

Published in final edited form as: Psychopharmacology (Berl). 2013 Jun 10;230(2):10.1007/s00213-013-3150-5. doi: 10.1007/s00213-013-3150-5

Table 3.

Logistic regression of abstinence on baseline nicotine concentration and difference after use of the cigarette filter (Model 1), adding cigarettes per day at baseline and change in cigarettes per day (Model 2), and adding demographic and smoking history variables (Model 3). (N=166)

	Model 1 (β, se)	Model 2 (β, se)	Model 3 (β, se)
Intercept	0.26 (0.48)	0.53 (0.63)	−5.30 (1.91)
Plasma nicotine – baseline	−0.10 (0.03)^*	−0.08 (0.04)^*	−0.10 (0.04)^*
Change in nicotine	−0.07 (0.03)^*	−0.06 (0.03)^*	−0.08 (0.03)^*
CPD – baseline	---	−0.03 (0.02)	---
Change in CPD	---	0.05 (0.03)	---
Female	---	---	0.17(.20)
Education (years)	---	---	0.15 (0.07)^*
Age (years)	---	---	0.09 (0.05)
Age of 1^st cigarette	---	---	−0.05 (0.05)
Years smoking	---	---	−0.07 (0.05)
Previous quit attempts	---	---	1.27 (0.12)
FTQ score	---	---	0.16 (0.81)
AIC	193.477	194.091	193.867
BIC	202.665	209.276	223.498

CPD = cigarettes per day

AIC = Akaike Information Criterion

BIC = Bayesian Information Criterion

p<.05