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Table 1 Quality assessment for non-randomized trials

From: The efficacy of intravenous aminocaproic acid in primary total hip and knee arthroplasty: a meta-analysis

Quality assessment for non-randomized trials

Churchill et al. 2016 (THA)

Churchill et al. 2016 (TKA)

Churchill et al. 2017

Hobbs et al. 2017

A clearly stated aim

2

2

2

2

Inclusion of consecutive patients

2

2

2

2

Prospective data collection

0

0

0

0

Endpoints appropriate to the aim of the study

2

2

2

2

Unbiased assessment of the study endpoint

2

2

2

2

A follow-up period appropriate to the aims 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

2

2

2

0

Baseline equivalence of groups

2

2

2

2

Adequate statistical analyses

2

2

2

2

Total score

20

20

20

18

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X