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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Drug Alcohol Depend. 2014 Feb 15;138:67–74. doi: 10.1016/j.drugalcdep.2014.02.007

Table 4.

Regression Models of CO-confirmed 7-day Point-Prevalence Abstinence at 8 weeks.

Model 1: Substitute Reinforcers OR 95% CI p
  FTND .84 .75 – .95 .004
  Age of smoking initiation 1.06 1.02 – 1.10 .007
  Change in substitute reinforcers 1.57 1.23 – 2.01 < .001
  Change in depressive symptoms .83 .65 – 1.06 .13
  Nicotine patch adherence 1.06 1.03 – 1.09 < .001
  Change in substitute reinforcers × Change in depressive symptoms .90 .71 – 1.14 .38
Model 2: Complementary Reinforcers OR 95% CI p
  FTND .86 .77 – .97 .012
  Age of smoking initiation 1.06 1.02 – 1.10 .005
  Change in complementary reinforcers .80 .63 – 1.01 .059
  Change in depressive symptoms .77 .61 – .97 .028
  Nicotine patch adherence 1.06 1.03 – 1.09 < .001
  Change in complementary reinforcers × Change in depressive symptoms .99 .79 – 1.25 .94

Note. Smoking coded as reference group.