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Surgery rates in IBD
  1. Anders Tøttrup1,
  2. Bente Mertz Nørgård2,
  3. Niels Qvist3
  1. 1 Surgical Department P, Aarhus University Hospital, Aarhus, Denmark
  2. 2 Center for Clinical Epidemiology, Odense University Hospital, Odense, Denmark
  3. 3 Surgical Department A, Odense University Hospital, Odense, Denmark
  1. Correspondence to Dr Niels Qvist, Surgical Department A, Odense University Hospital, Odense 5000, Denmark; famqvist{at}

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With great interest we have read the paper by Rungoe et al 1 describing a possible decrease rate in surgery in patients with IBD. The authors have identified all Danish patients with IBD by their first IBD diagnosis registered in the time period from 1979 to 2011. Data were extracted from the Danish National Patient Register, which contains information about all inpatient hospital contacts including diagnoses and surgical interventions, and outpatient diagnoses were not registered before 1995. Accordingly, Cohorts 1 and 2 represent only patients, who have had conditions requiring first time admissions, whereas Cohorts 3 and 4 represent a mixture of patients having first time diagnoses of IBD as inpatients or as outpatients (probably milder cases). Thus, Cohorts 3 and 4 might represent patients with less severe disease at …

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  • Contributors All authors contributed equally on this paper.

  • Competing interests None.

  • Provenance and peer review Not commissioned; internally peer reviewed.

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