Table 2. COP parameters as a function of condition and Group (Control vs. HD patients: mean± SD).

Variables	Control		HD Patients		P value		Cohen's d
	Baseline	Dual	Baseline	Dual	Baseline	Dual	Baseline	Dual
95% ellipse area(mm2)	106.5±43.8	103.9±78.5	273.2±152.5	465.8±420.7	<0.01	<0.01	-1.48	-1.00
MVAP (mm/s)	8.5±1.8	9.5±3.0	10.9±4.3	13.8±5.3	0.04	<0.01	-0.98	-1.00
MVML(mm/s)	4.0±0.7	4.5±1.8	5.3±1.5	7.4±3.5	<0.01	<0.01	-1.09	-1.02
RMSAP (mm)	3.8±0.8	3.8±0.8	5.6±1.3	7.1±3.8	<0.01	<0.01	-1.65	-1.18
RMSML(mm)	1.5±0.4	1.2±0.4	2.6±1.1	3.5±3.2	<0.01	<0.01	-1.33	-0.97
RangeAP (mm)	17.9±3.4	18.9±3.8	27.0±7.8	32.3±14.4	<0.01	<0.01	-1.51	-1.27
RangeML (mm)	7.5±1.6	7.1±3.6	13.1±5.8	17.1±14.2	<0.01	<0.01	-1.31	-0.97

Note: Values are mean± SD or as otherwise indicated. P value and Cohen's d relate to group difference (P<0.01).