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Table 2 Symptoms in cases with and without neurophysiological abnormality

From: Differences in risk factors for neurophysiologically confirmed carpal tunnel syndrome and illness with similar symptoms but normal median nerve function: a case–control study

 

NP+ve cases

NP-ve cases

 

n

(%)

n

(%)

Days in past 4 weeks with numbness, tingling or pain in hand(s)

    

  <7

21

(4.4)

28

(6.9)

  7-13

49

(10.3)

53

(13.0)

  14-28

354

(74.5)

277

(67.7)

  Missing

51

(10.7)

51

(12.5)

Days in past 4 weeks on which numbness, tingling or pain in hand(s) disturbed sleep

    

  0

55

(11.6)

102

(24.9)

  <7

89

(18.7)

77

(18.8)

  7-13

83

(17.5)

78

(19.1)

  14-28

213

(44.8)

128

(31.3)

  Missing

35

(7.4)

24

(5.9)

Time since completely free from numbness, tingling and pain in hands for ≥ 4 weeks

    

  <6 months

161

(33.9)

164

(40.1)

  ≥ 6 months, <1 year

41

(8.6)

29

(7.1)

  ≥1 Year

254

(53.5)

196

(47.9)

  Missing

19

(4.0)

20

(4.9)

Problems in past 4 weeks because of numbness, tingling or pain in hand(s)

    

  Difficulty turning taps, using kitchen   gadgets, sewing or doing repairs

106

(22.4)

90

(22.0)

  Having minor accidents   (e.g. dropping things)

54

(11.4)

66

(16.1)

  Difficulty fastening buttons or zips

57

(12.0)

54

(13.2)

  Trouble writing or typing

70

(14.7)

62

(15.2)

  Being very clumsy

54

(11.4)

52

(12.7)

Pain at other anatomical sites in the past 4 weeks

    

  Neck

221

(46.5)

218

(53.3)

  Shoulder

214

(45.1)

217

(53.1)

  Elbow

185

(39.0)

166

(40.6)