Table 2. Bivariate predictors of change in gait velocity from baseline to week-12.

Predictive variable	n	r	p
Medical history
Age	33	0.04	0.84
Time Post-stroke	33	-0.52	0.002
# Outside Physical Therapy Sessions	33	0.12	0.49
# All Outside Therapy Sessions	33	0.34	0.054
Impairment
Gait Velocity	33	0.27	0.13
Gait Endurance	33	0.46	0.007
Leg FM score	33	0.46	0.007
Arm FM score	33	0.43	0.01
FIM Ambulation Score	33	0.47	0.006
Disability
Modified Rankin Score	33	0.05	0.80
Hamilton Depression Score	33	0.15	0.40
Barthel Index	33	0.51	0.003
SIS-16 Score	33	0.36	0.042
Brain injury
Infarct Volume	24	0.02	0.92
% Corticospinal Tract Injury	24	-0.06	0.80
Brain function
Activation Volume, Ipsilesional Foot Primary Sensorimotor Cortex	20	0.54	0.01
Activation Volume, Contralesional Foot Primary Sensorimotor Cortex	20	0.34	0.15
Activation Magnitude, Ipsilesional Foot Primary Sensorimotor Cortex	20	0.34	0.15
Activation Magnitude, Contralesional Foot Primary Sensorimotor Cortex	20	0.34	0.15

Correlation between 19 independent variables measured at baseline and the primary study outcome measure, change in gait velocity. For normally distributed variables, r is the Pearson correlation coefficient; for non-normally distributed, r is Spearman's rho. FM=Fugl-Meyer, FIM=Functional Independence Measure, SIS=Stroke Impact Scale.