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. 2010 Oct 26;12(12):1203–1210. doi: 10.1093/ntr/ntq169

Table 1.

Means and Standard Deviations of the Full Sample Variables Over Time

Baseline
6 Month
Variables N M SD N M SD
Nicotine dependence 232 1.74 0.82 209 1.75 0.86
Number of biological parent ever-smokers 225 1.12 0.74 202 1.08 0.77
Number of days smoked in last month 233 10.31 10.84 209 10.98 11.85
Number of cigarettes/day in the last month 234 2.15 2.52 212 2.92 4.00
Negative affect expectancies 232 2.49 0.96 209 2.44 1.01
Boredom relief expectancies 232 2.09 0.97 209 2.14 1.07
Number of EMA event-recorded smoking 234 4.88 5.94 128 5.60 6.64
Negative mood before smoking 234 3.98 2.10 128 3.77 2.16
Negative mood now 234 3.34 1.84 128 3.26 1.84
Change in negative mood 234 −0.64 1.53 128 −0.52 1.21
Positive mood before smoking 234 6.38 1.78 128 6.45 1.75
Positive mood now 234 7.06 1.63 128 6.95 1.64
Change in positive mood 234 0.68 1.51 128 0.50 1.16
Tired/bored mood before smoking 234 4.56 1.89 128 4.57 2.11
Tired/bored mood now 234 4.42 1.79 128 4.48 1.86
Change in tired/bored mood 234 −0.14 1.55 128 −0.09 1.43