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Table 1 Summary of study Characteristics

From: Is surgical intervention more effective than non-surgical treatment for carpal tunnel syndrome? a systematic review

ID

Authors

Year

Country

Design

Sample size

Inclusion and exclusion criteria

Study Quality (Jadad et al. Scores; SEQES)

1

Jarvik et al. [13]

2009

USA

RCT

116

57( OCTR or ECTR)

59( Multi-modality* )

1. Clinical diagnosis of CTS greater than 2 weeks

2. Confirmed by electrodiagnostic studies

3. In absence of electrodiagnostic criteria, positive in night pain and flick test

4. Excluded if previous treatment with CTS release surgery, severe thenar muscle atrophy

3/5

39/48

2

Elwakil et al. [14]

2007

Egypt

Comparative cohort study

60

30 (OCTR)

30 ( Laser )

Clinical diagnosis of CTS

1/5

29/48

3

Ucan et al. [15]

2006

Turkey

RCT

57

11( OCTR)

23 ( Splinting )

23 ( Splinting + one dose steroid injection)

1. Mild to moderate clinical diagnosis of CTS greater than 6 months

2. Confirmed by electrodiagnostic studies

3. Excluded if advanced CTS, thenar atrophy or previous CTS treatment

2/5

36/48

4

Ly-Pen et al [16].

2005

Spain

RCT

163

80( OCTR)

83 (one or two-dose steroid injection )

1. Clinical diagnosis of CTS greater than 3 months

2. Confirmed by electrodiagnostic studies

3. Excluded if previous treatment with CTS release surgery, severe thenar muscle atrophy

3/5

35/48

5

Hui et al. [17]

2005

Hong Kong

RCT

50

25( OCTR)

25 ( One dose steroid injection )

1. Clinical diagnosis of CTS greater than

3 months but less than 1 year

2. Confirmed by electrodiagnostic studies

3. Excluded if severe thenar muscle atrophy, ulnar, radial neuropathy

3/5

38/48

6

Demirci et al. [18]

2002

Turkey

Comparative cohort study

90

44( OCTR)

46 ( Two-dose steroid injection )

1. Clinical diagnosis of CTS greater than 6 months

2. Confirmed by electrodiagnostic studies

3. Excluded if previous steroid injection, OCTR or distal radius fracture

0/5

31/48

7

Gerritsen et al [19]

2002

Netherlands

RCT

176

87( OCTR)

89 ( Splinting )

1. Clinical diagnosis of CTS

2. Confirmed by electrodiagnostic studies

3. Excluded if severe thenar muscle atrophy

3/5 40/48

  1. RCT: randomized clinical trials
  2. OCTR: standard open carpal tunnel release
  3. ECTR: Endoscopic carpal tunnel release