Table 1. Clinical features for the 26 amyotrophic lateral sclerosis patients.

Patient	Age	Sex	Onset site	Duration (months)	ALSFRS-R	MRC Sum Score	SI
1	32	M	BULBAR	4	43	84	2.1
2	57	M	BULBAR	3	44	90	10
3	52	F	BULBAR	48	36	84	8.5
4	64	F	BULBAR	10	44	90	4.9
5	58	M	BULBAR	5	43	90	7.4
6	58	M	BULBAR	15	44	90	9.5
7	48	F	BULBAR	21	42	90	13
8	64	M	LIMB	7	47	87	5
9	69	M	LIMB	8	42	56	0
10	57	F	LIMB	9	45	83	6.4
11	64	M	LIMB	12	41	79	3.3
12	60	M	LIMB	6	42	82	1.7
13	62	M	LIMB	5	46	88	3.9
14	51	M	LIMB	20	33	65	0.1
15	42	M	LIMB	17	41	74	0
16	48	M	LIMB	5	42	80	9.8
17	56	F	LIMB	16	34	74	0.2
18	44	M	LIMB	3	46	86	0.9
19	58	F	LIMB	30	31	37	11.8
20	68	M	LIMB	10	48	88	6.3
21	69	F	LIMB	8	43	86	1.1
22	66	M	LIMB	9	47	80	2.8
23	69	F	LIMB	14	47	81	0
24	69	F	LIMB	8	46	79	7.9
25	73	M	LIMB	24	44	81	0
26	65	M	LIMB	17	41	71	5.3
Mean	58.6			9.5			4.4
SEM	1.9						0.8
Median					43	83
IQR				6–17	41–46	79–88

All patients were graded using the amyotrophic lateral sclerosis functional rating scale revised (ALSFRS-R). Muscle strength was assessed using the Medical Research Council (MRC) score. The split hand index (SI) was calculated in all patients.