Table 5

Spearman correlation analysis of raw FTM tremor 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
stdStrLen	0.58	satPreDur	0.50	kurtP	0.46	Dxy	0.55
iqrStrLen	0.56	maxStrLen	0.49	ratioAxAy	0.45	Dx	0.53
maxStrLen	0.52	minStrLen	0.49	medStrLen	0.45	Dy	0.51
minStrLen	0.52	Dx	0.49	skewP	−0.44	maxStrLenAir	0.50
medStrLen	0.49	ratioJxJy	0.49	Dx	0.43	inAirTime	0.49

Drawing tasks
Features Task 5a	Spearman correlation coefficient	Features Task 5b	Spearman correlation coefficient	Features Task 6	Spearman correlation coefficient
medAx	0.75	medAx	0.75	medAx	0.82
Dxy	0.73	Dxy	0.73	medAy	0.77
Dx	0.72	Dy	0.72	Dxy	0.70
Dy	0.71	Dx	0.71	Dy	0.68
medAy	0.68	medAy	0.65	medJy	0.64