Brief Article
Copyright ©2012 Baishideng Publishing Group Co.
World J Rheumatol. Oct 3, 2012; 2(2): 21-26
Published online Oct 3, 2012. doi: 10.5499/wjr.v2.i2.21
Table 1 Electrophysiological results of the study groups (mean ± SD)
Cases (n = 30)Control (n = 10)P value
Latency in millisecond (ms)
Left2.98 ± 0.612.33 ± 0.360.0061
Right2.96 ± 0.692.44 ± 0.380.028
Amplitude in millivolt (mv)
Left3.29 ± 0.393.32 ± 0.420.9241
Right3.36 ± 0.393.38 ± 0.480.8991
Table 2 Characteristics of subjects studied and neck disability index score
CharacteristicsNumber of patientsScore of NDI3P value
Work task
Stressful2234.7 ± 9.50.011
Non-stressful824.5 ± 3.1
Handedness
Right2832.2 ± 9.70.766
Left234.1 ± 8.7
Sex
Male1337.5 ± 9.80.007
Female1728.4 ± 7.4
Pain site
Right627.3 ± 9.10.1971
Left630.1 ± 6.8
Both1834.8 ± 9.8
Age (yr)
< 401828.2 ± 6.80.0092
≥ 401238.1 ± 9.8
Disease duration (yr)
< 31130.1 ± 8.40.377
≥ 31933.4 ± 10.1