Table 2. Fractional anisotropy for tracts connecting the whole striatum with the frontal cortex regions.

	HC (n=58)	SB (n=30)	SZ (n=24)	P (HC versus SB)	P (HC versus SZ)	P (SB versus SZ)
Striatum–DLPFC
R	0.36±0.02	0.36±0.02	0.36±0.02	0.80	0.53	0.74
L	0.35±0.02	0.34±0.02	0.35±0.02	0.67	0.25	0.17
Striatum–mOFC
R	0.28±0.01	0.28±0.01	0.28±0.01	0.71	0.97	0.73
L	0.26±0.01	0.26±0.01	0.26±0.01	0.61	0.87	0.53
Striatum–IFG
R	0.30±0.01	0.30±0.01	0.29±0.01	0.96	0.30	0.33
L	0.28±0.01	0.28±0.01	0.28±0.01	0.47	0.93	0.49

Abbreviations: DLPFC, dorsolateral prefrontal cortex; HC, healthy controls; IFG, inferior frontal gyrus; L, left; mOFC, medial orbital frontal cortex; R, right; SB, unaffected siblings of schizophrenia patients; SZ, schizophrenia patients.

Values represent mean±s.d.