DRD2 Taq1A Polymorphism-Related Brain Volume Changes in Parkinson’s Disease: Voxel-Based Morphometry

Table 1

Demographic and clinical characteristics of participants.

	A1 carrier	A2 carrier	HS	value
Number, no	77	26	108
Female, no (%)	31 (40.3)	11 (42.3)	48 (44.4)	0.851
Age, mean (SD)	67.43 (11.23)	70.00 (7.87)	65.91 (10.09)	0.172
TBV, mean (SD), ml	1049.41 (129.57)	1043.51 (121.92)	1023.19 (98.68)	0.282
3.0 T MRI, no (%)	10 (13)	3 (11.5)	15 (13.9)	0.947

TBV, total brain volume; LED, levodopa-equivalent dose; HS, healthy subjects.