Colorectal Malignancy in a Prospective Irish Inflammatory Bowel Disease Population 15 Years Since Diagnosis: Comparison with the EC-IBD Cohort

Table 4

CRC and extraintestinal cancers in the EC-IBD study mean related to the Irish cohort.

Cancer	Total patients (2009)	Observed	Expected	Relative risk (RR)	Confidence interval (CI) (low-high)
CRC
Dublin	133	0	0.01	0
All north	316	5	0.01	1.72	0.72–4.1
All south	265	4	0.01	1.5	0.57–3.98
Non-CRC
Dublin	133	6	0.06	0.78	0.35–1.72
All north	316	26	0.06	0.88	0.88–1.85
All south	265	27	0.06	1.7	1.19–2.43

CRC: colorectal cancer.