Table 2.

The statistics of each feature for different groups of subjects.

Feature description	Mean ± SD
	ALS	PD	HD	CO
Left stride interval (s)	1.520 ± 0.093	1.173 ± 0.052	1.146 ± 0.093	1.112 ± 0.083
Right stride interval (s)	1.520 ± 0.095	1.173 ± 0.046	1.146 ± 0.093	1.112 ± 0.077
Left stance interval (s)	1.043 ± 0.092	0.788 ± 0.047	0.763 ± 0.072	0.737 ± 0.073
Right stance interval (s)	1.023 ± 0.078	0.814 ± 0.052	0.800 ± 0.066	0.720 ± 0.060
Double support interval (s)	0.546 ± 0.080	0.429 ± 0.066	0.416 ± 0.071	0.345 ± 0.057