Irritable bowel syndrome and colon cancer: A meta-analysis

Table 2 Newcastle Ottawa Scale risk of bias of the included studies

Ref.	Selection (4)	Comparability (2)	Outcome (3)	Total score	Quality
Akhtar et al[14], 2006	2	1	2	5/9	Low
Canavan et al[15], 2014	3	2	3	8/9	High
Chang et al[10], 2015	4	2	2	8/9	High
Chey et al[16], 2010	3	1	2	6/9	Moderate
Gu et al[17], 2011	3	1	2	6/9	Moderate
Ejtehadi et al[5], 2023	3	1	2	6/9	Moderate
Hsiao et al[11], 2014	4	2	2	8/9	High
Ishihara et al[18], 2012	3	1	1	5/9	Moderate
Staller et al[19], 2021	3	1	1	5/9	Moderate