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. Author manuscript; available in PMC: 2008 Sep 2.
Published in final edited form as: Psychol Addict Behav. 2007 Jun;21(2):216–225. doi: 10.1037/0893-164X.21.2.216

Table 5.

Minnesota Nicotine Withdrawal Scale Scores and t Values for Factor Scores for Each Clinical Trial

Smoking
Abstinent
Study, model, and factor t df n M SD n M SD p
Abstinence study
 Model 1
  Factor 1 −1.73 83 54 2.56 3.33 31 1.32 2.84 .087
  Factor 2 −0.56 83 54 1.26 1.49 31 1.06 1.63 .578
  Factor 3 −1.06 83 54 1.20 1.19 31 0.94 1.00 .292
 Model 2
  Factor 1 −1.73 83 54 2.56 3.33 31 1.32 2.84 .087
  Factor 2 −0.83 83 54 0.80 1.07 31 0.61 0.80 .410
  Factor 3 −0.05 83 54 0.45 1.06 31 0.46 1.00 .961
 Model 3 −1.69 83 54 5.37 4.80 31 3.52 5.00 .095
Message framing study
 Model 1
  Factor 1 0.24 202 101 4.32 4.23 103 4.46 4.10 .811
  Factor 2 0.68 200 100 2.29 2.04 102 2.49 2.14 .497
  Factor 3 −1.33 202 102 2.15 1.21 102 1.92 1.22 .185
 Model 2
  Factor 1 0.24 202 101 4.32 4.23 103 4.46 4.10 .811
  Factor 2 0.04 202 101 1.12 1.18 103 1.13 1.23 .965
  Factor 3 0.96 201 101 1.18 1.42 102 1.37 1.45 .336
 Model 3 0.36 197 98 9.24 6.86 101 9.58 6.40 .719
Naltrexone + patch study
 Model 1
  Factor 1 −1.90 349 149 4.61 3.57 202 3.89 3.45 .058
  Factor 2 −1.27 353 153 2.36 1.90 202 2.11 1.73 .204
  Factor 3 −3.94 353 151 2.46 0.97 204 2.03 1.04 .000
 Model 2
  Factor 1 −1.90 349 149 4.61 3.57 202 3.89 3.45 .058
  Factor 2 −1.23 354 153 1.07 1.20 203 0.92 1.02 .220
  Factor 3 −0.62 355 153 1.29 1.36 204 1.21 1.30 .535
 Model 3 −2.44 343 146 9.99 5.81 199 8.48 5.59 .015

Note. Model 1: Factor 1 = irritability, anxiety, difficulty concentrating, and restlessness; Factor 2 = appetite and insomnia; Factor 3 = craving. Model 2: Factor 1 = irritability, anxiety, difficulty concentrating, and restlessness; Factor 2 = appetite; Factor 3 = insomnia. Model 3: Unitary Factor = craving, irritability, anxiety, difficulty concentrating, restlessness, increased appetite/weight gain, depression, and insomnia.