Table 6

Spearman correlation analysis of MDS-UPDRS-III limb bradykinesia score: top five computerised features for each task

Writing tasks
Features Task 1	Spearman correlation coefficient	Features Task 2	Spearman correlation coefficient	Features Task 3	Spearman correlation coefficient	Features Task 4	Spearman correlation coefficient
iqrStrLen	0.58	satPreDur	0.64	ratioAxAy	0.50	Dxy	0.56
stdStrLen	0.54	ratioJxJy	0.55	Dx	0.44	Dx	0.53
Dxy	0.49	Dx	0.49	medAy	−0.40	Dy	0.52
Dy	0.47	maxStrLen	0.48	medAngS	−0.40	maxStrLenAir	0.51
Dx	0.45	minStrLen	0.48	Dxy	0.39	totalT	0.49

Drawing tasks
Features Task 5a	Spearman correlation coefficient	Features Task 5b	Spearman correlation coefficient	Features Task 6	Spearman correlation coefficient
medAx	0.79	medAx	0.80	medAx	0.80
avgAx	0.66	Dx	0.68	medAy	0.71
medAy	0.64	medAy	0.67	medVx	0.65
Dx	0.63	Dxy	0.65	medVy	0.60
avgJy	0.63	Dy	0.62	Dxy	0.58