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Table 3: 
Results from diffusivity (×10⁻³ mm² s⁻¹) measurements^a
Structure Method Controls for HD Gene Carriers (n = 14) HD Gene Carriers (n = 15) P Value Controls for HD Patients (n = 11) HD Patients (n = 9) P Value
Caudate Planar ROI 0.717 ± 0.02 0.697 ± 0.03 .04 0.716 ± 0.02 0.806 ± 0.04 <.001
0.714 (0.677–0.758) 0.696 (0.637–0.757) .03 0.711 (0.668–0.763) 0.811 (0.729–0.883) <.001
Putamen Planar ROI 0.711 ± 0.02 0.714 ± 0.03 n.s. 0.701 ± 0.02 0.801 ± 0.06 .002
0.723 (0.665–0.758) 0.720 (0.663–0.768) n.s. 0.700 (0.661–0.741) 0.801 (0.679–0.923) .003
Caudate Volume average 0.743 ± 0.02 0.721 ± 0.02 .005 0.735 ± 0.02 0.788 ± 0.04 .001
0.748 (0.701–0.785) 0.723 (0.683–0.758) .006 0.742 (0.697–0.773) 0.792 (0.708–0.869) .009
Putamen Volume average 0.735 ± 0.02 0.733 ± 0.02 n.s. 0.725 ± 0.02 0.809 ± 0.04 <.001
0.737 (0.692–0.778) 0.735 (0.692–0.774) n.s. 0.716 (0.689–0.762) 0.820 (0.727–0.893) < .001

 
a Values are expressed as mean ± SD (upper row) and median (range, lower row); significance values are for the t test (upper row) and Mann-Whitney U test (lower row).