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Table 4 Newcastle-Ottawa Scale for nonrandomized cohort studies

From: Internal jugular vein versus subclavian vein as the percutaneous insertion site for totally implantable venous access devices: a meta-analysis of comparative studies

Study Selection Comparability Outcome Quality score
Representativeness 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 the Design or Analysis Assessment of Outcome Was Follow-Up Long Enough for Outcomes to Occur Adequacy of Follow Up of Cohorts
Araujo, 2008 1 1 1 1 1 1 1 0 7
Plumhans, 2011 1 1 1 1 1 1 0 0 6
Aribaş, 2012 1 1 1 1 1 1 0 0 6
Vetter, 2013 1 1 1 1 1 1 1 1 8
Liu, 2014 1 1 1 1 0 1 1 1 7
Nagasawa, 2014 1 1 1 1 0 1 1 1 7
Ozbudak, 2014 1 1 1 1 1 1 1 1 8
Wu, 2014 1 1 1 1 1 1 1 1 8
Jung, 2015 1 1 1 1 2 1 1 1 9