Critical Care Research and Practice / 2012 / Article / Tab 2

Research Article

Risk Factors for Development of Acute Kidney Injury in Critically Ill Patients: A Systematic Review and Meta-Analysis of Observational Studies

Table 2

Quality of the studies utilizing the Newcastle-Ottawa quality assessment scale (maximum score of 9).

Cohort studies
SelectionComparabilityOutcomeTotal score
First author, yearRepresentativeness of exposed cohortSelection of the nonexposed cohortAscertainment of exposureDemonstration that outcome was not present at start of studyComparability
on the basis of design or analysis
Assessment of outcomeFollowup long enoughAdequacy of followup of cohorts

Hilberman
1979 [43]
****4
Wilkins 1983 [53]******6
Groeneveld 1991 [42]*******7
Tran 1994 [51]******6
Zanardo 1994 [54]********8
Ward 1996 [52]***3
Vivino 1998 [5]********8
Mangano 1998 [48]********8
Conlon 1999 [36]******6
De Mendonça 2000 [4] *******7
Clermont 2002 [35]******6
Bove 2004 [33]********8
Bahar 2005 [30]******6
Chawla 2005 [34]******6
Loef 2005 [46]******6
Mataloun 2006 [49]*******7
Hoste 2006 [6]*******7
Landoni 2007 [45]*******7
Barrantes 2008 [31]******6
Bagshaw 2008 [28]*****5
Bagshaw et al., 2008 [29]*****5
Abelha 2009 [27]****4
De Araújo Brito 2009 [39]****4
Thakar 2009 [50]****4
Hobson 2009 [44]*******7
Machado 2009 [47]****4
Gomes 2010 [41]******6

Case-control studies
SelectionComparabilityExposureTotal score
First author, yearCase definition adequateRepresentiveness
of cases
Selection of controlsDefinition of controlsComparability
on the basis of designs or analysis
Ascertainment of exposureSame ascertainment methodNonresponse rate

Corwin 1989 [37]***3
Boucher 1990 [32]********8
Ficher 2002 [40]****4
Dasta 2008 [38]******6

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