	3 DISCS					4 DISCS					5 DISCS
	(success)	(failure)	Total	X²	p≤	(success)	(failure)	Total	X²	p≤	(success)	(failure)	Total	X²	p≤
CONTROL	223	99	322	9.55	0.002	171	52	223	7.42	0.0064	96	75	171	0.07	0.7865
PARKINSON’S	79	66	145	9.55	0.002	48	31	79	7.42	0.0064	28	20	48	0.07	0.7865
	Rule 1					Rule 1					Rule 1
CONTROL	83	140	223	28.63	0.0000	84	87	171	1.27	0.2593	73	23	96	0.01	0.9098
PARKINSON’S	57	22	79	28.63	0.0000	28	20	48	1.27	0.2593	21	7	28	0.01	0.9098
	Rule 2					Rule 2					Rule 2
CONTROL	31	192	223	69.38	0.0000	34	127	171	24.67	0.0000	22	74	96	0.52^Y	0.4695
PARKINSON’S	49	30	79	69.38	0.0000	27	21	48	24.67	0.0000	4	24	28	0.52^Y	0.4695
	Rule 3					Rule 3					Rule 3
CONTROL	20	203	223	89.69	0.0000	13	158	171	11.22	0.0008	2	94	96	2.24^Y	0.1344
PARKINSON’S	48	31	79	89.69	0.0000	12	36	48	11.22	0.0008	3	25	28	2.24^Y	0.1344