. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: J Neurol Phys Ther. 2014 Jul;38(3):151–160. doi: 10.1097/NPT.0b013e3182a3d353

Table 2b.

Summary of regression modeling of post-stroke duration and FA asymmetry for baseline performance and motor learning

Stroke Group	Predictors	R²	F statistic	Significance	βPSD	βage	βasym
Baseline Performance
Model 1	PSD, age	0.379	3.050	0.092	0.459	0.231
Model 2	PSD, age, FA asym	0.440	2.362	0.139	0.707	0.077	−0.325
Day 7 - Day 1 Change
Model 1	PSD, age	0.008	0.041	0.960	0.049	0.053
Model 2	PSD, age, FA_asym	0.573	4.025	0.045*	−0.701	0.519	0.984*

*Healthy Group*	Predictors	R²	F statistic	Significance	βage	βasym
Baseline Performance
Model 1	Age	0.142	1.163	0.317	−0.377
Model 2	Age, FA_asym	0.201	0.756	0.510	−0.467	0.258
Day 7 - Day 1 Change
Model 1	Age	0.241	2.226	0.179	0.491
Model 2	Age, FA_asym	0.243	0.965	0.433	0.508	−0.05

PLIC: posterior limb internal capsule, PSD: post-stroke duration, ipsi: ipsilateral, contra: contralateral, asym: asymmetry