Table 3. Relationships between the SLC6A3 variations and regional DAT measures.

Variant	ROI	df	F	p
3′UTR	Caudate	5,81	5.9	<0.001*
	Putamen	5,81	2.1	NS
	Ventral Str	5,77	3.0	0.03*
Intron8	Caudate	5,89	6.2	<.001*
	Putamen	5,89	2.4	0.02*
	Ventral Str	5,81	2.5	0.04*
Haplotype	Caudate	5.85	2.6	<0.01*
	Putamen	5.85	1.7	NS
	Ventral Str	5,81	2.6	0.03*

Abbreviations: ROI – region of interest; Ventral Str. – ventral striatum.

Significance level for overall effect of the genotypes (three-genotypes classification) and haplotypes (four haplotypes classification) was set at p<0.05 (ANCOVA); values<0.05 are marked with*.