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Early effect of screening programmes on incidence and mortality rates of colorectal cancer
  1. Manuel Zorzi1,
  2. Ugo Fedeli2
  1. 1 Veneto Tumour Registry, Veneto Region, Padua, Italy
  2. 2 SER—Epidemiological Department, Veneto Region, Padua, Italy
  1. Correspondence to Dr Manuel Zorzi, Veneto Tumour Registry, Veneto Region, Padua, Italy; manuel.zorzi{at}

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We thank Logan and Halloran for their interest in our study1 and admit that we were equally surprised at the early impact of screening programmes on colorectal cancer mortality rates.2

With respect to incidence trends, rates peaked during the prevalence round and showed a sharp reduction below the prescreening values within 5 years of screening set-up.2 These results are in line with the few evidences in the literature that evaluated the effect of population screening programmes based on the faecal occult …

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  • Contributors MZ and UF: drafting and final approval of the manuscript.

  • Competing interests None.

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