Table 5.

Significance of difference in the percentage of small-, medium-, and large-diameter axons in segment I compared to four other segments in the CC in autistic and control subjects

Axon diameter (μm)	Group	S I/S II	S I/S III	S I/S IV	S I/S V
< 0.651	C	0.073	0.002**	0.073	0.002**
0.651–1.051	C	0.646	0.224	0.052	0.616
>  1.051	C	0.048*	0.0002***	0.0015**	0.0002***
< 0.651	A	0.028*	0.663	0.663	0.663
0.651–1.051	A	0.232	0.745	0.404	0.232
>  1.051	A	0.221	0.221	0.221	0.684

CC corpus callosum, S segment, C control, A autism. P values incorporate multiple-comparison adjustments to maintain a false discovery rate (FDR) of 0.05. *p ≤ 0.05; **p ≤ 0.01; ***p ≤ 0.001