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Table 4 Quality assessment of included studies

From: Comparison of artificial graft versus autograft in anterior cruciate ligament reconstruction: a meta-analysis

Study Level of evidence Type NOS Jadad scale
Pan 2013 III Retrospective study 7  
Ghalayini 2010 I RCT   5
Liu 2010 III Retrospective study 7  
Pritchett 2009 II Prospective study 7  
Nau 2002 I RCT   3
Grøntvedt 1995 I RCT   1
Endstrom 1993 I RCT   1
  1. NOS Newcastle-Ottawa Scale, RCT randomized controlled trial