Table 2.

Partial correlations with local Gyrification index (controlling for age)

			Surface area			Cortical thickness
	Cluster	Location	TD	ASD	P-value†	TD	ASD	P-value†
Main effect of group	G-1	Precentral gyrus/planum temporale	0.256*	0.326**	0.337	−0.403**	−0.297*	0.251
	G-2	Superior–middle temporal gyrus	0.146	0.024	0.248	−0.021	0.122	0.215
	G-3	Superior parietal lobule/anterior occipital lobe	0.505**	0.58**	0.278	−0.364**	−0.044	0.031
	G-4	Lingual gyrus–calcarine sulcus	0.324**	0.412**	0.287	−0.292*	−0.316*	0.440
	G-5	Frontal pole	0.133	0.355**	0.095	−0.128	0.084	0.119
	G-6	Perisylvian, insular, precentral cortex	0.517**	0.485**	0.405	−0.414**	0.113	0.001
	G-7	Lateral orbitofrontal cortex	0.185	−0.031	0.115	−0.363**	−0.260*	0.264
	G-8	Superior frontal gyrus	0.107	0.119	0.472	−0.424**	−0.340**	0.295
	G-15	Circular insular sulcus/postcentral sulcus	0.577**	0.350	0.274	−0.057	−0.057	1.000
	G-16	Insular cortex/transverse temporal sulcus	0.157	0.253	0.707	−0.446*	−0.099	0.155
Interaction	G-12	Precentral gyrus/central sulcus	0.337**	0.256*	0.312	−0.164	−0.135	0.436
	G-13	Lateral occipital cortex	0.209	0.357**	0.187	−0.375**	−0.037	0.024
	G-14	Caudal middle frontal gyrus/precentral sulcus	0.054	−0.163	0.348	−0.138	−0.205	0.352
	G-19	Frontal pole/anterior cingulate gyrus	0.462*	0.399*	0.776	−0.375*	−0.239	0.573
	G-20	Precuneus cortex	0.553**	0.259	0.181	−0.371*	−0.001	0.145
	G-21	Superior frontal gyrus–sulcus	0.383*	0.287	0.685	−0.234	0.105	0.198
	G-22	Cuneus cortex	0.440*	0.439	0.996	0.124	−0.137	0.961

Correlation analyses were restricted to clusters exhibiting interaction effects or between group differences.

Bold indicates significant difference between groups, uncorrected.

Italics indicate results from NYU sample.

*P < 0.05, **P < 0.01. ^†P-value corresponds to z-test of between group difference in correlation.