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Table 6 Neuropathy of the median nerve at the carpal tunnel segmenta.

From: Nerve conduction in relation to vibration exposure - a non-positive cohort study

  Right hand Left hand
Cumulative life-time exposure b Nerve conduction n (%) Nerve conduction + symptoms c n (%) Nerve conduction n (%) Nerve conduction + symptoms c n (%)
Class 0 6(23) 3 (12) 2(8) 1(4)
Class 1 2(11) 1(5) 1(6) 1(6)
Class 2 4(19) 0 3(16) 1(5)
Class 3 3(18) 1(6) 3(17) 2(11)
Class 4 6(31) 3(16) 3(17) 2(11)
Current daily exposure b     
Class 0 6(23) 3(12) 2(8) 1(4)
Class 1 7(16) 2(5) 4(10) 3(7)
Class 2 2(13) 1(7) 2(14) 1(7)
Class 3 6(33) 2(11) 4(23) 2(12)
  1. a Sensory latency from palm to wrist greater than 1.73 ms at a distance of 60 mm
  2. b Results are given as numbers and percentage of measured hands in parentheses.
  3. c Pain and/or nocturnal numbness and/or difficulty in buttoning clothing.