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Table 3 Comparison between patient and control groups as regards the number of cases with affected brainstem auditory evoked potentials

From: Electrophysiological biomarkers of central nervous system affection in cases of chronic obstructive pulmonary disease (COPD)

  COPD Control P value
N % N %  
Normal 23 57.5 27 90 0.0012*
Abnormal 17 42.5 3 10
  1. *significant