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Table 2 Quality assessment using Newcastle-Ottawa Scale of included studies

From: Partial ALPPS versus complete ALPPS for staged hepatectomy

Newcastle-Ottawa Scale Studies
Alvarez, F. A(2015) Henrik Petrowsky(2015) Linecker, M(2017) Chan, A(2017)
Selection
 Representativeness of the exposed cohort (maximum:*) * * * *
 Selection of the non exposed cohort (maximum:*) * * * *
 Ascertainment of exposure (maximum:*) * * * *
 Demonstration that outcome of interest was not present at start of study (maximum:*)
Comparability
 Comparability of cohorts on the basis of the design or analysis (maximum:**) ** **
Outcome
 Assessment of outcome (maximum:*) * * * *
 Was follow-up long enough for outcomes to occur (maximum:*) * * * *
 Adequacy of follow up of cohorts (maximum:*) * * * *
Total NOS score ****** ****** ******** ********
  1. The symbol "*" refers to the score of each item