Table 1

Clinical profiles and CMAP amplitudes of subjects studied

ALS (n=21)Normal (n=17)p Value
Clinical profile
 Number of subjects2117
 Gender (male:female)12:910:70.91
 Age (year)65 (2)66 (3)0.79
 Duration (month)14 (2)
 Onset (bulbar:non-bulbar)8:13
CMAP amplitude
 Median nerve (mV)5.3 (0.6)9.8 (0.6)<0.0001
 Ulnar nerve (mV)6.6 (0.7)9.4 (0.5)0.0031
 Median/ulnar ratio0.8 (0.1)1.1 (0.1)0.049
  • Data are given as mean (SEM).

  • ALS, amyotrophic lateral sclerosis; CMAP, compound muscle action potential.