Effect of Flexible Sigmoidoscopy Screening on Colorectal Cancer Incidence and Mortality

Colorectal cancer is a major health burden. Screening is recommended in many countries.To estimate the effectiveness of flexible sigmoidoscopy screening on colorectal cancer incidence and mortality in a population-based trial.Randomized clinical trial of 100,210 individuals aged 50 to 64 years, identified from the population of Oslo city and Telemark County, Norway. Screening was performed in 1999-2000 (55-64-year age group) and in 2001...