Table 2.

Regression Parameters From the Hierarchical Linear Model Predicting Expected Smoking at Each Time Point

Region	Overall intercept	Slope of prior cravings	Moderation of craving slope by brain activation
Target regions
Right IFG	0.51 (5.35)	0.24 (0.20)	−0.29* (0.12)
Left IFG	0.51 (4.64)	0.18 (0.15)	−0.23** (0.05)
Right pre-SMA	0.50 (5.60)	0.19 (0.18)	−0.20* (0.09)
Left pre-SMA	0.50 (5.45)	0.26* (0.12)	−0.23* (0.11)
Right basal ganglia	0.54 (4.96)	0.31* (0.14)	−0.27* (0.12)
Left basal ganglia	0.52 (4.99)	0.25* (0.12)	−0.32** (0.12)
Control regions
Right amygdala	0.51 (5.22)	0.24* (0.11)	0.22* (0.09)
Left amygdala	0.50 (5.89)	0.16 (0.17)	0.03 (0.07)
Right precuneus	0.49 (5.82)	0.19 (0.20)	0.11 (0.08)
Left precuneus	0.50 (6.06)	0.19 (0.20)	0.11 (0.08)

Note: All parameters are reported in natural log units. Standard errors are given in parentheses. All models controlled for the linear decline in smoking across days, the negative quadratic pattern within days, and baseline nicotine dependence. IFG = inferior frontal gyrus; pre-SMA = pre-supplementary motor area.

^*p < .05.

^**p < .01.