Skip to main content
. 2019 Feb 11;8(1):35–47. doi: 10.1556/2006.8.2019.03

Table 2.

Between- and within-group MANCOVA and post-hoc partial correlation results between IAs and HCs

Name of ROI Group main effect (ANCOVA)a Impulsivity main effect (ANCOVA)a Group by impulsivity interaction (ANCOVA)a
Sizeb Statistics Statistics Statistics
HCs IAs F p η2 F p η2 rb,c F p η2 r (HCs)b,d r (IAs)b,d
Left superior frontal cortex 2.799 ± 0.118 2.795 ± 0.092 F1, 52 = 0.023 n.s. 0.00 F1, 51 = 0.169 n.s. 0.00 F1, 50 = 0.270 n.s. 0.00
Left pars opercularis 2.648 ± 0.099 2.681 ± 0.116 F1, 52 = 0.708 n.s. 0.01 F1, 51 = 0.577 n.s. 0.01 F1, 50 = 0.047 n.s. 0.00
Left pars triangularis 2.524 ± 0.098 2.530 ± 0.117 F1, 52 = 0.663 n.s. 0.01 F1, 51 = 0.169 n.s. 0.01 F1, 50 = 0.163 n.s. 0.00
Left pars orbitalis 2.729 ± 0.144 2.749 ± 0.128 F1, 52 = 0.689 n.s. 0.01 F1, 51 = 8.429 .005* 0.14 −.29 F1, 50 = 0.253 n.s. 0.00
Left caudal middle frontal cortex 2.637 ± 0.125 2.642 ± 0.082 F1, 52 = 0.796 n.s. 0.01 F1, 51 = 0.273 n.s. 0.00 F1, 50 = 0.503 n.s. 0.01
Left rostal middle frontal cortex 2.446 ± 0.107 2.452 ± 0.080 F1, 52 = 0.036 n.s. 0.00 F1, 51 = 0.333 n.s. 0.01 F1, 50 = 0.003 n.s. 0.00
Left lateral orbitofrontal cortex 2.709 ± 0.093 2.713 ± 0.091 F1, 52 = 0.110 n.s. 0.00 F1, 51 = 0.081 n.s. 0.00 F1, 50 = 0.659 n.s. 0.01
Left medial orbitofrontal cortex 2.454 ± 0.092 2.467 ± 0.105 F1, 52 = 0.928 n.s. 0.02 F1, 51 = 0.001 n.s. 0.00 F1, 50 = 0.024 n.s. 0.00
Left caudal anterior cingulate cortex 2.717 ± 0.206 2.656 ± 0.215 F1, 52 = 0.217 n.s. 0.00 F1, 51 = 2.156 n.s. 0.04 F1, 50 = 2.650 n.s. 0.05
Left rostal anterior cingulat e cortex 2.911 ± 0.156 2.861 ± 0.125 F1, 52 = 2.045 n.s. 0.04 F1, 51 = 1.093 n.s. 0.02 F1, 50 = 1.071 n.s. 0.02
Left superior temporal cortex 2.884 ± 0.117 2.825 ± 0.108 F1, 52 = 6.578 .013* 0.11 F1, 51 = 0.063 n.s. 0.00 F1, 50 = 3.236 n.s. 0.06
Left middle temporal cortex 2.840 ± 0.105 2.842 ± 0.123 F1, 52 = 0.001 n.s. 0.00 F1, 51 = 0.053 n.s. 0.00 F1, 50 = 6.553 .014* 0.12 .35 −.35
Left inferior temporal cortex 2.752 ± 0.143 2.736 ± 0.154 F1, 52 = 0.012 n.s. 0.00 F1, 51 = 0.178 n.s. 0.00 F1, 50 = 4.126 .048** 0.08 .29 −.26
Left transverse temporal gyrus 2.605 ± 0.039 2.502 ± 0.040 F1, 52 = 1.900 n.s. 0.03 F1, 51 = 0.059 n.s. 0.00 F1, 50 = 6.738 .012* 0.12 .32 −.34
Left insula 3.062 ± 0.076 3.077 ± 0.109 F1 ,52 = 0.228 n.s. 0.00 F1, 51 = 5.435 .024* 0.09 .32 F1, 50 = 3.129 n.s. 0.06
Right superior frontal cortex 2.748 ± 0.109 2.733 ± 0.098 F1, 52 = 0.006 n.s. 0.00 F1, 51 = 0.022 n.s. 0.00 F1, 50 = 0.614 n.s. 0.01
Right pars opercularis 2.626 ± 0.080 2.658 ± 0.127 F1, 52 = 2.448 n.s. 0.04 F1, 51 = 0.438 n.s. 0.01 F1, 50 = 0.159 n.s. 0.00
Right pars triangularis 2.500 ± 0.094 2.525 ± 0.100 F1, 52 = 0.712 n.s. 0.01 F1, 51 = 1.676 n.s. 0.03 F1, 50 = 1.503 n.s. 0.03
Right pars orbitalis 2.643 ± 0.138 2.708 ± 0.154 F1, 52 = 2.002 n.s. 0.04 F1, 51 = 0.270 n.s. 0.00 F1, 50 = 0.037 n.s. 0.00
Right caudal middle frontal cortex 2.605 ± 0.112 2.630 ± 0.072 F1, 52 = 1.971 n.s. 0.04 F1, 51 = 0.000 n.s. 0.00 F1, 50 = 0.149 n.s. 0.00
Right rostal middle frontal cortex 2.366 ± 0.082 2.355 ± 0.075 F1, 52 = 0.010 n.s. 0.00 F1, 51 = 0.178 n.s. 0.00 F1, 50 = 2.178 n.s. 0.04
Right lateral orbitofrontal cortex 2.603 ± 0.095 2.607 ± 0.123 F1, 52 = 0.473 n.s. 0.01 F1, 51 = 1.905 n.s. 0.04 F1, 50 = 0.034 n.s. 0.00
Right medial orbitofrontal cortex 2.434 ± 0.129 2.430 ± 0.110 F1, 52 = 0.217 n.s. 0.00 F1, 51 = 1.450 n.s. 0.03 F1, 50 = 0.008 n.s. 0.00
Right caudal anterior cingulate cortex 2.488 ± 0.183 2.492 ± 0.177 F1, 52 = 0.142 n.s. 0.00 F1, 51 = 0.884 n.s. 0.02 F1, 50 = 0.088 n.s. 0.00
Right rostal anterior cingulate cortex 2.827 ± 0.156 2.838 ± 0.164 F1, 52 = 0.672 n.s. 0.01 F1, 51 = 0.580 n.s. 0.01 F1, 50 = 0.053 n.s. 0.00
Right superior temporal cortex 2.908 ± 0.130 2.876 ± 0.105 F1, 52 = 1.120 n.s. 0.02 F1, 51 = 1.224 n.s. 0.02 F1, 50 = 4.176 .046** 0.08 .35 −.21
Right middle temporal cortex 2.936 ± 0.106 2.912 ± 0.111 F1, 52 = 0.058 n.s. 0.00 F1, 51 = 0.649 n.s. 0.01 F1, 50 = 6.099 .017* 0.11 .39 −.25
Right inferior temporal cortex 2.832 ± 0.076 2.814 ± 0.107 F1, 52 = 0.009 n.s. 0.00 F1, 51 = 0.139 n.s. 0.00 F1, 50 = 2.135 n.s. 0.04
Right transverse temporal gyrus 2.532 ± 0.155 2.504 ± 0.149 F1, 52 = 0.739 n.s. 0.01 F1, 51 = 0.167 n.s. 0.00 F1, 50 = 0.000 n.s. 0.00
Right insula 3.107 ± 0.089 3.091 ± 0.091 F1, 52 = 0.506 n.s. 0.01 F1, 51 = 11.425 .001* 0.18 .41 F1, 50 = 0.188 n.s. 0.00

Note. MANCOVA: multivariate analysis of covariance; HC: healthy control; IAs: Internet addicts; ANCOVA: analysis of covariance; ROI: region of interest.

aAdjusted for ICV, BDI, and STAI. bValues represent means ± standard deviations. cValues represent Pearson’s partial correlation coefficients between CT and impulsivity (BIS-11 total score) for IAs and HCs together. dValues represent Pearson’s partial correlation coefficients between CT and impulsivity (BIS-11 total score).

*Significant p value Benjamini–Hochberg adjusted for multiple comparisons. **Did not survive Benjamini–Hochberg correction.