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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

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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