Burden and impact of acute kidney injury in acute liver failure: A systematic review

Table 1 Study quality assessment

Ref.	Study design and setting are clearly defined	Eligibility and recruitment criteria of patients are clearly described	Operational definitions of ALF and AKI as per standard guidelines	Outcome variables described	Limitations of the study are clearly described	Score
Leithead et al[12]	Yes	No	Yes	No	Yes	3
O’Riordan et al[13]	Yes	Yes	No	Yes	Yes	4
Tujios et al[14]	Yes	Yes	Yes	Yes	Yes	4
Urrunaga et al[15]	Yes	No	No	Yes	Yes	3
Coelho et al[16]	Yes	Yes	Yes	Yes	Yes	5
Hadem et al[17]	No	Yes	No	Yes	Yes	3
Cardoso et al[18]	Yes	Yes	Yes	Yes	Yes	5
Imoto et al[19]	Yes	No	Yes	Yes	No	3
Fidalgo et al[20]	Yes	Yes	Yes	Yes	Yes	5

AKI: Acute kidney injury.