Table 2. Diagnosis effects and the sex-by-diagnosis interaction effect on fractional anisotropy values in frontal and non-frontal connectivity tracts.

Frontal tracts	Diagnostic effect in males		Diagnostic effect in females		Sex-by-diagnosis interaction
	F	P-value	F	P-value	F	P-value
Anterior segment AF left	12.75	0.001a	0.09	0.764	8.80	0.003a
Anterior segment AF right	8.90	0.003a	1.56	0.215	10.97	0.001a
Long segment AF left	7.21	0.008a	0.18	0.675	5.32	0.022a
Long segment AF right	0.60	0.444	0.32	0.573	1.22	0.272
Cingulum left	13.15	<0.001a	0.01	0.943	7.67	0.006a
Cingulum right	9.87	0.002a	0.01	0.937	5.66	0.018a
Uncinate left	14.13	<0.001a	0.30	0.588	9.86	0.002a
Uncinate right	12.06	0.001a	1.37	0.245	12.33	0.001a
IFOF left	11.80	0.001a	0.09	0.771	5.89	0.016a
IFOF right	10.75	0.001a	0.00	0.988	6.04	0.015a
Non-frontal tracts
Posterior segment AF left	5.06	0.026a	0.00	0.975	2.73	0.100
Posterior segment AF right	4.30	0.040a	0.11	0.737	3.14	0.078
ILF left	8.92	0.003a	0.70	0.408	3.08	0.081
ILF right	6.02	0.016a	0.01	0.946	2.82	0.095

Abbreviations: AF, arcuate fasciculus; IFOF, inferior frontal occipital fasciculus; ILF, inferior longitudinal fasciculus; IQ, intelligence quotient.

Scanning centre, age and full scale IQ, were all included as covariates.

^aP-values are significant at a level <0.05 after Holm-Bonferroni correction.