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Table 2 Quality assessment for non-randomized trials

From: The efficacy and safety of tranexamic acid in revision total knee arthroplasty: a meta-analysis

Quality assessment for non-randomized trials Aguilera 2012 [10] Ortega-Andreu 2016 [11] Samujh 2014 [12] Smit 2013 [13]
A clearly stated aim 2 2 2 2
Inclusion of consecutive patients 2 2 2 2
Prospective data collection 2 2 2 2
Endpoints appropriate to the aim of the study 2 2 2 2
Unbiased assessment of the study endpoint 0 0 0 0
A follow-up period appropriate to theaims of study 2 2 2 2
Less than 5% loss to follow-up 2 2 2 2
Prospective calculation of the sample size 0 0 0 0
An adequate control group 2 2 2 2
Contemporary groups 0 2 1 2
Baseline equivalence of groups 2 2 2 2
Adequate statistical analyses 2 2 2 2
Total score 18 20 19 20