Kian Keyashian1, Melody Dehghan2, Lindsay Sceats3, Cindy Kin3, Berkeley N Limketkai1, K T Park2. 1. Division of Gastroenterology, Department of Medicine, Stanford, California, USA. 2. Stanford Children's Inflammatory Bowel Disease Center, Division of Gastroenterology, Department of Pediatrics, Stanford, California, USA. 3. Department of Surgery & Stanford-Surgery Policy Improvement Research and Education (S-SPIRE) Center, Stanford University School of Medicine, Stanford, California, USA.
Abstract
BACKGROUND: Data on the incidence of inflammatory bowel disease (IBD) by age group are available in countries outside of the United States or localized populations within the United States. We aimed to estimate the incidence rates (IRs) of IBD by age group using a US multiregional data set. METHODS: We used the Optum Research Database to identify incident IBD patients with a disease-free interval of 1.5 years between 2005 and 2015. Overall and age-specific IRs were calculated for 4 different age groups: pediatric (0-17 years), young adult (18-25 years), adult (26-59 years), elderly (>60 years). Time trends of incidence were evaluated in each age group. Perianal phenotype (in Crohn's disease [CD]) was also compared. RESULTS: The mean IR for the cohort (n = 60,247) from 2005 to 2015 was 37.5/100,000. The IR was highest in adult and elderly cohorts (36.4 and 36.7/100,000 respectively). In the adult and elderly groups, the IR for UC was higher than that for CD, whereas the opposite was true in the pediatric and young adult groups. The IR increased over the 10-year study period for all age groups (time trends P < 0.001). The elderly group had less perianal disease than the adult group (20.8 vs 22.3%, respectively; P < 0.05). CONCLUSIONS: In one of the most comprehensive evaluations of the incidence of IBD in the United States, we found an incidence rate similar to those of other national populations. We also confirmed differences of specific IBD phenotypes based on age groups, with lower rates of perianal disease in the elderly.
BACKGROUND: Data on the incidence of inflammatory bowel disease (IBD) by age group are available in countries outside of the United States or localized populations within the United States. We aimed to estimate the incidence rates (IRs) of IBD by age group using a US multiregional data set. METHODS: We used the Optum Research Database to identify incident IBD patients with a disease-free interval of 1.5 years between 2005 and 2015. Overall and age-specific IRs were calculated for 4 different age groups: pediatric (0-17 years), young adult (18-25 years), adult (26-59 years), elderly (>60 years). Time trends of incidence were evaluated in each age group. Perianal phenotype (in Crohn's disease [CD]) was also compared. RESULTS: The mean IR for the cohort (n = 60,247) from 2005 to 2015 was 37.5/100,000. The IR was highest in adult and elderly cohorts (36.4 and 36.7/100,000 respectively). In the adult and elderly groups, the IR for UC was higher than that for CD, whereas the opposite was true in the pediatric and young adult groups. The IR increased over the 10-year study period for all age groups (time trends P < 0.001). The elderly group had less perianal disease than the adult group (20.8 vs 22.3%, respectively; P < 0.05). CONCLUSIONS: In one of the most comprehensive evaluations of the incidence of IBD in the United States, we found an incidence rate similar to those of other national populations. We also confirmed differences of specific IBD phenotypes based on age groups, with lower rates of perianal disease in the elderly.
Authors: Raina Shivashankar; William J Tremaine; W Scott Harmsen; Edward V Loftus Journal: Clin Gastroenterol Hepatol Date: 2016-11-14 Impact factor: 11.382
Authors: Åsa H Everhov; Jonas Halfvarson; Pär Myrelid; Michael C Sachs; Caroline Nordenvall; Jonas Söderling; Anders Ekbom; Martin Neovius; Jonas F Ludvigsson; Johan Askling; Ola Olén Journal: Gastroenterology Date: 2017-11-02 Impact factor: 22.682
Authors: Eric I Benchimol; Charles N Bernstein; Alain Bitton; Matthew W Carroll; Harminder Singh; Anthony R Otley; Maria Vutcovici; Wael El-Matary; Geoffrey C Nguyen; Anne M Griffiths; David R Mack; Kevan Jacobson; Nassim Mojaverian; Divine Tanyingoh; Yunsong Cui; Zoann J Nugent; Janie Coulombe; Laura E Targownik; Jennifer L Jones; Desmond Leddin; Sanjay K Murthy; Gilaad G Kaplan Journal: Am J Gastroenterol Date: 2017-04-18 Impact factor: 10.864