Assessment of Parkinsonian gait in older adults with dementia via human pose tracking in video data

Table 3 Regression coefficients and p-values for univariate regression to UPDRS-gait and SAS-gait scores with 2D and 3D gait features

		UPDRS-gait		SAS-gait
		Regression Coefficient	p-value	Regression Coefficient	p-value
2D Features	steps of walk	0.14	< 0.001**	0.086	0.0039**
	cadence (steps/min)	0.021	0.0024**	0.023	< 0.001**
	symmetry index (SI) of step time	−0.011	0.0035**	− 0.0090	0.0093**
	coefficient of variation (CV) of step time	−1.0	0.039*	−1.2	0.015*
	average step width	−0.77	0.19	0.0035	0.99
	average margin of stability (MOS)	1.0	0.21	2.2	0.0047**
	average minimum MOS	1.4	0.22	2.8	0.010*
	CV step width	−0.27	0.23	−0.21	0.40
3D Features	walking speed (m/s)	−7.5	< 0.001**	−6.0	< 0.001**
	step length (m)	−10.	< 0.001**	−8.3	< 0.001**
	step width symmetry angle (degrees)	−0.075	< 0.001**	− 0.073	< 0.001**
	root mean square (RMS) of sacrum medio-lateral (ML) velocity	−5.0	< 0.001**	−3.3	0.015*
	step length symmetry angle (degrees)	0.054	< 0.001**	0.050	0.0012**
	average MOS (mm)	−10.	0.0013**	−8.1	0.0071**
	CV step width	−1.5	0.0018**	−1.4	0.0018**
	step width (m)	−4.2	0.047*	−4.3	0.034*
	minimum MOS (mm)	−9.4	0.13	−5.3	0.38
	step time symmetry angle (degrees)	−0.020	0.21	−0.031	0.045*
	CV step length	0.50	0.25	0.19	0.66
	standard deviation (SD) sacrum ML	−1.2	0.57	−3.4	0.11
	cadence (steps/min)	−0.0019	0.63	−0.0024	0.53
	step time (s)	0.27	0.74	0.28	0.71
	CV step time	0.10	0.82	−0.24	0.59
	range of motion (ROM) sacrum ML	0.018	0.98	−0.52	0.36

ISSN: 1743-0003