Estimation of Motor Impairment and Usage of Upper Extremities during Daily Living Activities in Poststroke Hemiparesis Patients by Observation of Time Required to Accomplish Hand Dexterity Tasks

Table 2

Relationships between single component item scores and total item scores of SHAP.

	α	β	R^2
Abstract object tasks
Spherical
Light	10.24	10.79	0.437	<0.0001
Heavy	−14.59	17.01	0.731	<0.0001
Tripod
Light	21.14	6.42	0.520	<0.0001
Heavy	27.50	5.64	0.409	<0.0001
Power
Light	−4.63	14.79	0.812	<0.0001
Heavy	−6.88	15.61	0.623	<0.0001
Lateral
Light	27.11	4.43	0.774	<0.0001
Heavy	3.321	10.73	0.883	<0.0001
Tip
Light	26.54	5.08	0.811	<0.0001
Heavy	13.34	9.13	0.733	<0.0001
Extension
Light	17.95	7.48	0.863	<0.0001
Heavy	6.74	11.19	0.642	<0.0001

SHAP, Southampton Hand Assessment Procedure. The coefficient of determination (R²) was used in linear regression analysis: f (x) = α + β (x). f (x): the component item score; x: the total item score; α: constant of the function; β: unstandardized regression coefficient.