{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,18]],"date-time":"2026-10-18T22:48:52Z","timestamp":1792363732497,"version":"4.4.0"},"reference-count":22,"publisher":"American Academy of Pediatrics (AAP)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2004,9,1]]},"abstract":"<jats:p>Objective. To describe incidence and temporal trends of intussusceptions in Danish children during 1980 to 2001.<\/jats:p>\n               <jats:p>Methods. A population-based cohort study was conducted of 1.67 million children who were younger than 5 years during 1980 to 2001 and were followed up for 6.66 million person-years. The Danish National Patient Registry was used to identify cases of intussusception in the cohort. Age-specific incidence rates were main outcome measure.<\/jats:p>\n               <jats:p>Results. A total of 1814 cases of intussusception among children who were younger than 5 years were reported from 1980 to 2001. The incidence rate remained fairly constant during 1980 to 1990 but decreased by 55% (95% confidence interval: 43%\u201365%) from 1990 to 2001. The reduction was most pronounced among children aged 3 to 5 months.<\/jats:p>\n               <jats:p>Conclusions. The incidence of intussusception among Danish children declined significantly during the 1990s, particularly among infants 3 to 5 months of age.<\/jats:p>","DOI":"10.1542\/peds.2004-0390","type":"journal-article","created":{"date-parts":[[2004,11,5]],"date-time":"2004-11-05T17:23:17Z","timestamp":1099675397000},"page":"782-785","source":"Crossref","is-referenced-by-count":124,"title":["Intussusception in Early Childhood: A Cohort Study of 1.7 Million Children"],"prefix":"10.1542","volume":"114","author":[{"given":"Thea","family":"K\u00f8lsen Fischer","sequence":"first","affiliation":[{"name":"Division of Viral and Rickettsial Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristine","family":"Bihrmann","sequence":"additional","affiliation":[{"name":"Departments of Epidemiology Research"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Perch","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, Amager University Hospital, Copenhagen, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anders","family":"Koch","sequence":"additional","affiliation":[{"name":"Departments of Epidemiology Research"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan","family":"Wohlfahrt","sequence":"additional","affiliation":[{"name":"Departments of Epidemiology Research"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M\u00f8lbak","family":"Ka\u030are","sequence":"additional","affiliation":[{"name":"Epidemiology, Statens Serum Institut"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mads","family":"Melbye","sequence":"additional","affiliation":[{"name":"Departments of Epidemiology Research"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"417","published-online":{"date-parts":[[2004,9,1]]},"reference":[{"key":"2021121021563193800_R1","doi-asserted-by":"crossref","unstructured":"Stringer MD, Pablot SM, Brereton RJ. 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