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Table 2 Study quality score by modified Jadad score

From: Endoscopic versus open carpal tunnel release for idiopathic carpal tunnel syndrome: a meta-analysis of randomized controlled trials

Study included Study design Randomization Blind method Allocation concealment Withdraw and dropout Revised Jadad score Level of evidence
Agee 1992 RCT 1 1 0 1 3 II
Brown 1993 RCT 2 1 0 1 4 II
Sennwald and Benedetti 1995 RCT 2 1 0 1 4 II
Dumontier 1995 RCT 2 1 0 1 4 II
Jacobsen 1996 RCT 1 1 0 1 3 II
MacDermid 2003 RCT 2 1 0 1 4 II
Ferdinand 2002 RCT 2 1 0 1 4 II
Trumble 2002 RCT 2 2 0 0 4 II
Wong 2003 RCT 2 2 0 1 5 II
Atroshi 2006 RCT 2 1 0 1 4 II
Soichi Ejiri 2012 RCT 2 2 0 0 4 II
Larsen 2013 RCT 2 2 0 1 4 II
Ho Jung Kang 2013 RCT 2 2 1 1 5 II