Table 2:

Linear regression analysis of the measured structure and PMA at time of scan

	No.	R	β	P Value
Interopercular opening^a	343	–0.74	–0.06	<.001
Height of insular cortex, curved measurement	343	0.84	0.09	<.001
Height of insular cortex, straight measurement^a	343	0.85	0.09	<.001
Depth of Sylvian fissure	341	0.19	0.06	<.001
Thickness of CC (midcoronal)	342	0.26	0.003	<.001
Height of cingulate gyrus (midcoronal)	313	0.72	0.06	<.001
Depth of cingulate sulcus^a	315	0.83	0.05	<.001
Circumferent length of CC	311	0.68	0.17	<.001
Thickness of CC (midsagittal)
Genu	335	0.32	0.01	<.001
Body	339	0.18	0.002	<.001
Height of cingulate gyrus (midsagittal)	260	0.44	0.02	<.001
Total USBD (all scans)	312	0.88	0.43	<.001
Total USBD (DOL 1–3)	87	0.76	0.41	<.001

Note:—No. indicates the number of scans in which the structure could be measured; CC, corpus callosum.
a Structures selected for the USBD.