Table 1.

Linear regression models predicting circle drawing laterality (LI_cv) with right–left asymmetry of fractional anisotropy (FA) and mean diffusivity (MD) in the ROI covering the corticospinal tract

Model	R 2	DTI measure	LI		Age		Gender		WHLI
			β	p	β	p	β	p	β	p
1a	0.118	FA	−0.343	0.019	−0.154	0.278	0.047	0.730	−	−
1b	0.147	FA	−0.371	0.012	−0.127	0.372	0.041	0.762	0.175	0.218
2a	0.011	MD	0.020	0.892	−0.063	0.671	0.074	0.618	−	−

Significant results with p < 0.05 are highlighted in bold

WH _LI Whole hemisphere laterality index

^aModels not controlled for whole hemisphere FA asymmetry

^bModels controlled for whole hemisphere FA asymmetry