. 2020 Mar 9;14(6):792–807. doi: 10.5009/gnl19163

Table 2.

Methodological Quality of the Cohort Study Included in the Final Analysis of Hepatocellular Carcinoma Incidence Based on the Newcastle-Ottawa Scale

Cohort study	Selection				Comparability	Outcome			Score

	Representativeness of the exposed cohort	Selection of the non-exposedcohort	Ascertainmentof 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	Total (0–9)
Allen (2009)²³	☆	☆	☆	☆	☆☆	☆	☆	☆	9
Persson (2013)²²	☆	☆	☆	☆	☆☆	☆	☆	☆	9
Kawamura (2016)²⁵	☆	☆	☆	☆	☆☆	☆	☆	☆	9
Schwartz (2013)²⁴	-	☆	☆	☆	☆	☆	☆	☆	7
Setiawan (2016)²⁶	☆	☆	☆	☆	☆	☆	☆	☆	8
Michikawa (2012)²⁷	☆	☆	☆	☆	☆☆	☆	☆	☆	9