Table 2.

Overview of spatio-temporal gait parameters for eleven healthy subjects and four PD patients (n = 1166 steps). Shown are the mean parameters (SD), Pearson correlation coefficient r, bias (SD), absolute error (SD) and the relative absolute error.

Parameter	Sensor	Camera	r	Bias	Abs. Error	Abs. Error (%)
Stride time (s)	1.15 (0.18)	1.15 (0.18)	$1.00$	−0.000 (0.016)	0.013 (0.010)	$1.1$
Stance time (s)	0.74 (0.14)	0.70 (0.13)	$0.99$	0.037 (0.020)	0.037 (0.019)	$5.4$
Swing time (s)	0.41 (0.05)	0.45 (0.05)	$0.93$	−0.037 (0.020)	0.037 (0.019)	$8.3$
Stride length (m)	1.43 (0.22)	1.45 (0.22)	$0.95$	−0.014 (0.067)	0.053 (0.043)	$3.6$
Velocity (m/s)	1.30 (0.37)	1.31 (0.37)	$0.99$	−0.012 (0.061)	0.048 (0.040)	$3.7$