Patients with inflammatory bowel disease and post-inflammatory polyps have an increased risk of colorectal neoplasia: A meta-analysis

Table 2 The methodological quality of each included study was assessed by using the Risk of Bias in Nonrandomized Studies - of Interventions (ROBINS-I) assessment tool

Included study	Bias due to confounding	Bias in selection of participants into the study	Bias in classification of interventions	Bias due to deviations from intended interventions	Bias due to missing data	Bias in measurement of outcomes	Bias in selection of the reported result	Overall bias
Jong et al[21], 2019	Moderate	Moderate	Low	Low	Low	Low	Low	Moderate
Mahmoud et al[15], 2019	Moderate	Moderate	Low	Low	Low	Low	Low	Moderate
Xu et al[22], 2020	Moderate	Moderate	Moderate	Low	Low	Low	Moderate	Moderate
Choi et al[14], 2017	Serious	Moderate	Moderate	Low	Low	Low	Moderate	Serious
Jegadeesan et al[20], 2016	Serious	Moderate	Moderate	Low	Low	Low	Moderate	Serious
Lutgens et al[19], 2015	Serious	Moderate	Moderate	Low	Low	Low	Low	Serious
Baars et al[13], 2011	Moderate	Moderate	Moderate	Low	Low	Low	Low	Moderate
Velayos et al[12], 2006	Moderate	Moderate	Moderate	Low	Low	Low	Moderate	Moderate
Rutter et al[18], 2004	Moderate	Moderate	Moderate	Low	No information	Low	Moderate	No information