(b) Frequency of pathological clinical signs

	%	%	%	p Fisher's exact
	Group I	Group II	Group III	I versus II	I versus III	II versus III
HSN	43	87	100	0.021	0.000	0.167
SPN	21	65	87	0.029	0.000	0.134
Romberg test	14	33	71	0.390	0.002	0.041
Fukuda-Stepping test	54	87	95	0.096	0.010	0.571
Gait disturbance	64	88	91	0.198	0.084	1.000