Table 1.

Item level ranking of MDS-UPDRS components by information content and total cumulative % information content for items on motor subscale (34 Items)

			Cumulative % of total information remaining
Item	Test name	Information at baseline for latent variable	Removal from most informative direction	Removal from least informative direction
49	Global Spont. of movement	0.58	100
35	Finger Tap-left hand	0.57
37	Hand Move-left hand	0.50	81
18	Dressing	0.42		19
39	Pronation-supine-left hand	0.42	71
31	Rigidity_LUE	0.41		29
28	Facial expression	0.37
29	Rigidity_Neck	0.33	59
36	Hand move-right hand	0.32		41
34	Finger Tap-right hand	0.32	51
41	Toe tap-left foot	0.32		49
24	Getting out of bed	0.30
33	Rigidity_LLE	0.29	41
43	Leg agility-Left leg	0.29		59
42	Leg agility-Right leg	0.27
40	Toe tap-right foot	0.24
48	Posture	0.21	29
27	Speech 3.1	0.21		71
32	Rigidity_RLE	0.21
17	Eating tasks	0.20
25	Walking and balancing	0.20	20
38	Pronation-supine-right hand	0.19		80
30	Rigidity_RUE	0.19
21	Doing hobbies and other activities	0.19
22	Turning in bed	0.16
19	Hygiene	0.16	10
14	Speech	0.15		90
45	Gait	0.14
15	Saliva and drooling	0.14
44	Arising from chair	0.13
20	Handwriting	0.10
26	Freezing	0.09
16	Chewing and swallowing	0.08
47	Postural stability	0.04		100

Items on row with percentage are also included in the information content decrement step