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. Author manuscript; available in PMC: 2015 May 21.
Published in final edited form as: Biol Psychiatry. 2005 Jul 14;58(6):488–494. doi: 10.1016/j.biopsych.2005.04.028

Table 1.

Corrected Mixed Effects Cluster Analysis in Smokers

Cluster COG x (mm) COG y (mm) COG z (mm) Max Z-statistic Mean COPE p
Anterior Cingulate Cortex/Orbitofrontal Cortex     1   44   −5 3.74 44.3 <.001
Superior Frontal Gyrus −14   56   28 3.28 45.8   .008
Occipital Cortex   14 −78 −17 3.23 42.9 <.001

Group mixed-effects analysis of smoking–neutral contrast demonstrated significant activation in three main clusters consisting of multiple local maxima. COGx, y, z, are the coordinates of the centers of gravity (COG) for each cluster. P represents the P value corresponding to the maximum Z-statistic within each cluster. COPE, contrast of the parameter estimates.

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