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Table 1 Risk of bias assessment of CRE studies using Newcastle Ottawa tool (Stang 2010). Receiving a star (*) represents that the study has low risk of bias and high quality in that category

From: A systematic review of the epidemiology of carbapenem-resistant Enterobacteriaceae in the United States

  Selection Comparability Outcome
Author (Year) Representative-ness of the exposed cohort Selection of the non-exposed cohort Ascertainment of exposure Demonstration that outcome of interest was not present at start of study Comparability of cohorts on the basis of design or analysis Assessment of outcome Was follow-up long enough for outcomes to occur Adequacy of follow-up of cohorts
Bogan (2014) [20] * * * * * * * _
Brennan (2014) [15] * * * * _ _ _ _
Gasink (2009) [21] * * * * * * * _
Guh (2015) [18] * * * * _ _ _ _
Lesho (2015) [16] * * * * _ _ _ _
Marquez (2013) [17] * * * _ _ _ _ _
Patel (2008) [22] * * * * * * * _
Thaden (2014) [19] * * * * _ _ _ _
Kalpoe (2012) [23] * * * * * * * *