General principles of prevention and screening unequivocally show that primary care is the cornerstone of screening programmes. Specific data from faecal occult blood test screening at a gastroenterologist's practice showed that screening was not performed at a sufficient scale as is also suggested by the national data from the years 2001-2005; neither the data after 2006, assessed qualitatively differently, have shown any improvement.
By contrast, though, an improvement in mortality can be expected in the following 3-5 years at the earliest.