The incidence of Crohn's disease and ulcerative colitis since 1995 in Danish children and adolescents <17 years - based on nationwide registry data.

Objective: Worldwide the incidence of pediatric Crohn's disease (CD) and ulcerative colitis (UC) is suspected to be increasing. Based on unselected nationwide register data the aim of this study is to examine the change in incidence of CD and UC in children and adolescents in Denmark.

Materials And Methods: All children and adolescents <17 years with a diagnosis of CD or UC registered in the Danish National Patient Registry from 1 January 1995 to 31 December 2013 were included.