Incidence of inflammatory bowel disease and phenotype at diagnosis in 2011: results of Epi-IBD 2011 study in the Vigo area.

OBJECTIVE To validate the incidence of inflammatory bowel disease (IBD) reported in Vigo in 2010 within the Epi-IBD study, which was the highest incidence reported so far in Spain. METHODS Epidemiological, prospective, population-based inception cohort study. All incident cases of IBD from 1st January to 31st December 2011 and living in the Vigo area at diagnosis were included. RESULTS 100 patients were diagnosed (62% men, median age 43.27 years): 49 ulcerative colitis (UC), 34 Crohn's disease (CD) and 17 IBD unclassified (IBDU). The incidence (per 100,000 inhabitants/year) was 17.56 (CD: 5.97; UC: 8.60; IBDU: 2.98), similar to that reported in 2010. The incidence in non-pediatric population was 19.66 (CD: 6.89, UC: 9.52; IBDU: 3.04). CD and UC phenotype was similar in 2010 and 2011. CONCLUSION This study supports the increase of incidence of EII in the Vigo area reported in 2010.