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Background: Colonoscopies are carried out for a range of reasons including for the detection of colon cancer and investigation of abdominal and bowel related symptoms. Inadequate preparation can increase the burden of repeat procedures.Methods: A systematic review aimed to identify the rate of repeat colonoscopies due to inadequate bowel preparation in France, Germany, Italy, Spain and the United Kingdom. The information obtained populated a decision analytic model to estimate the cost implications of inadequate bowel cleansing in the same five countries. The model explored scenarios by comparing one and two-litre polyethylene glycol-based bowel preparation.Results: The systematic review identified 14 eligible studies reporting on the proportion of patients with inadequate bowel cleansing indicated for a repeat procedure. Data were available for Italy (27.5%-35.9%), Spain (63%) and the UK (24.5%) only. The decision analytic model demonstrates that improving the proportion of adequate bowel cleansing at first colonoscopy is likely to generate cost savings.Conclusions: Based on the available evidence, increasing the proportion of people who have adequate bowel cleansing at index colonoscopy will likely have financial benefits in Italy, Spain and the UK. A paucity of data, for France and Germany, limits the robustness of conclusions in these countries. [ABSTRACT FROM AUTHOR]

Worldwide diagnoses of bowel cancer approximate an estimated one million new cases per year, comprising 9% of all cancer cases, and this has continued to increase over the last 25 years. With the association between cancer risk and increasing age, together with the suggestion that by 2015 there will be a 22% increase in the proportion of the population aged over 65 years and a 50% increase in the proportion of people aged over 80 years, there is likely to be a significant increase in the demand on cancer services throughout Europe and the rest of the world. This article discusses the current state of bowel cancer screening within Europe. [ABSTRACT FROM AUTHOR]