Risk of venous thromboembolism in children and adolescents with inflammatory bowel disease: A systematic review and meta-analysis

Table 2 Quality assessment

Ref.	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	Total quality scores
Antiel et al[31], 2013	1	0	1	1	0	1	1	1	6
Bence et al[26], 2020	1	0	1	1	0	1	1	1	6
Cairo et al[36], 2017	1	1	1	1	1	1	1	1	8
Derderian et al[27], 2020	1	0	1	1	0	1	1	1	6
Diamond et al[32], 2018	1	0	1	1	0	1	1	1	6
Diamond et al[33], 2010	1	0	1	1	0	1	1	1	6
Herzog et al[34], 2018	1	0	1	1	0	1	1	1	6
Jarchin et al[29], 2019	1	0	1	1	0	1	1	1	6
Khosravi et al[28], 2020	1	0	1	1	0	1	1	1	6
Lee et al[35], 2016	1	0	1	1	0	1	1	1	6
Nylund et al[19], 2013	1	1	1	1	2	1	1	1	9
Zitomersky et al[37], 2013	1	0	1	1	0	1	1	1	6