Trends of colorectal cancer incidence and mortality rates from 2003 to 2014 in Italy

Abstract

Objective: To evaluate the trends of colorectal cancer (CRC) incidence and mortality rates from 2003 to 2014 in Italy by age groups and regions.

Methods: We used the data of 48 cancer registries from 17 Italian regions to estimate standardized incidence and mortality rates overall and by sex, age groups (<50, 50-69, 70+ years), and geographic area (northwest, northeast, center, south, and islands). Time trends were expressed as annual percent change in rates (APC) with 95% confidence intervals (95% CI).

Results: Incidence rates decreased from 104.3 (2003) to 89.9 × 100,000 (2014) in men and from 64.3 to 58.4 × 100,000 in women. Among men, incidence decreased during 2007-2010 (APC -4.0, 95% CI -6.0 to -1.9) and 2010-2014 (APC -0.7, 95% CI -1.4 to 0.0), while in women it linearly decreased during the whole period (APC -1.1, 95% CI -1.4 to -0.8). Mortality rates showed a linear reduction both in men (APC -0.7, 95% CI -1.0 to -0.3) and women (APC -0.9, 95% CI -1.2 to -0.6) and decreased respectively from 41.1 to 39.2 × 100,000 and from 24.6 to 23.1 × 100,000. In the 50- to 69-year-old range (screening target age), incidence showed a prescreening increase, followed by a peak after screening started, and a decline thereafter. Incidence and mortality rates significantly decreased in all areas but in the south and islands, where incidence increased and mortality remained stable.

Conclusions: A renewed commitment by all regional health systems to invest in primary (i.e., lifestyle) and secondary (i.e., screening programs) prevention is of utmost importance.

Keywords: Colorectal cancer; incidence; mortality; screening.