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AIM To examine the incidence and trends in pediatric inflammatory bowel diseases(IBDs) over 2000-2015 and project the incidence to 2018. METHODS A 16-year prospective study of IBD patients < 19 years of age was conducted in the Czech Republic(the Pilsen region). All incident IBD cases within a well-defined geographical area were retrieved from a prospectively collected computerized clinical database. Historical Czech data were used for comparison(1990-2001). Our catchment population was determined from the census data. We calculated the incidence by relating the number of newly diagnosed cases to the size of thepediatric population-at-risk in each calendar year. Age/sex, disease type, place of residence, and race/ethnicity were identified. RESULTS In total, 170 new IBD cases [105 Crohn’s disease(CD), 48 ulcerative colitis(UC), and 17 IBD-unclassified(IBD-U)] were identified. The median age at IBD diagnosis was 14.2 years, 59.4% were males, and 97.1% were Caucasians. A male preponderance of IBD(P = 0.026) and CD(P = 0.016) was observed. With 109209 person-years in the catchment area, the average incidence of IBD per 100000 person-years was 10.0(6.2 for CD, 2.8 for UC, and 1.0 for IBD-U) for children aged 0 to 19 years; for those aged 0 to 15 years, the incidence rate was 7.3(4.6 for CD, 2.0 for UC, and 0.7 for IBD-U). An increase in incidence with age was observed(P = 0.0003). Over the 16-year period, the incidence increased for IBD patients(P = 0.01) and CD in particular(P < 0.0001), whereas the incidence for UC(P = 0.09) and IBD-U(P = 0.339) remained unchanged. IBD-projected data from 2016 to 2018 were 12.1, 12.3 and 12.6 per 100000 personyears, respectively.CONCLUSION Pediatric-onset IBD incidence is around its highest point. The increase, which is particularly pronounced for CD, may be challenging to relate to causes of pediatric disease.
AIM To examine the incidence and trends in pediatric inflammatory bowel diseases (IBDs) over 2000-2015 and project the incidence to 2018. METHODS A 16-year prospective study of IBD patients <19 years of age was conducted in the Czech Republic (the Pilsen Historical census data were used for comparison (1990-2001). Our catchment population was determined from the census data. We calculated the incidence by relating the number of newly diagnosed cases to the size of thepediatric population-at-risk in each calendar year. Age / sex, disease type, place of residence, and race / ethnicity were identified. RESULTS In total, 170 new IBD cases The median age at IBD diagnosis was 14.2 years, 59.4% were males, and 97.1% were Caucasians. [105 Crohn’s disease (CD), 48 ulcerative colitis (UC), and 17 IBD-unclassified (IBD- A male preponderanc With 109209 person-years in the catchment area, the average incidence of IBD per 100000 person-years was 10.0 (6.2 for CD, 2.8 for UC, and (P = 0.016) was observed. 1.0 for IBD-U) for children aged 0 to 19 years; for those aged 0 to 15 years, the incidence rate was 7.3 (4.6 for CD, 2.0 for UC, and 0.7 for IBD-U). An increase in incidence with age (P = 0.0003). Over the 16-year period, the incidence increased for IBD patients (P = 0.01) and CD in particular (P <0.0001), the incidence for UC (P = 0.09) and IBD-U IBD-projected data from 2016 to 2018 were 12.1, 12.3 and 12.6 per 100000 personyears, respectively. CONCLUSION Pediatric-onset IBD incidence is around its highest point. The increase, which is particularly pronounced for CD, may be challenging to relate to causes of pediatric disease.