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Table 4 Summary of methodological quality based on the PEDro classification scalec

From: Efficacy of extracorporeal shock wave therapy for knee tendinopathies and other soft tissue disorders: a meta-analysis of randomized controlled trials

Study author (year) [reference] Overalla Eligibility criteriab 1 2 3 4 5 6 7 8 9 10
Chen (2014) [51] 7/10d   X X X     X X X X
Geng (2017) [90] 6/10 X X   X     X X X X
Guan (2015) [80] 6/10 X X   X     X X X X
Huang (2017) [88] 6/10 X X   X     X X X X
Jiang (2016) [81] 6/10 X X   X     X X X X
Khosrawi (2017) [48] 8/10 X X   X X   X X X X X
Liu (2016) [82] 6/10 X X   X     X X X X
Taunton (2003) [83] 5/10d X X   X X    X   X  
Thijs (2017) [84] 9/10 X X X X X   X X X X X
Vetrano (2013) [85] 7/10 X X   X    X X X X X
Wang (2014) [86] 8/10 X X X X    X X X X X
Weckström (2016) [52] 6/10 X X X X     X   X X
Wu (2009) [91] 6/10 X X   X     X X X X
Wu (2016) [89] 6/10 X X   X     X X X X
Yang (2007) [16] 5/10 X X   X     X   X X
Zhang (2016) [92] 6/10 X X   X     X X X X
Zhang (2017) [17] 6/10 X X   X     X X X X
Zhou (2015) [53] 6/10 X X   X     X X X X
Zwerver (2011) [87] 9/10 X X X X X   X X X X X
  1. PEDro Physiotherapy Evidence Database
  2. aPoints of methodological quality are denoted as “X” for fulfilled criteria
  3. bNot used to calculate the total score
  4. cPEDro classification scale: 1 = random allocation, 2 = concealed allocation, 3 = similarity at the baseline, 4 = subject blinding, 5 = therapist blinding, 6 = assessor blinding, 7 = more than 85% follow-up for at least one key outcome, 8 = intention-to-treat analysis, 9 = between-group statistical comparison for at least one key outcome, 10 = point and variability measures for at least one key outcome. Methodological quality: high, ≥7 points; medium, 4–6 points; low, ≤3 points
  5. dScore was determined by a third assessor