Table 2.

Dyspnea and fib-psw of the RA in 128 patients with ALS

ALSFRS-R score (respiration subset)	n	Fib-psw in the RA
=12	95	75
<12	33	32*
χ2	–	5.801
P	–	0.016*

*P value for contrast of fib-psw in the RA between patients with an ALSFRS-R respiratory subset score of 12 or not; P<0.05, as compared with patients with an ALSFRS-R respiratory subset score of 12. Fib-psw: Fibrillations and positive sharp waves; RA: Rectus abdominis; ALS: Amyotrophic lateral sclerosis; ALSFRS-R: Revised ALS Functional Rating Scale; –: Not applicable.