NORCCAP: Norwegian Colorectal Cancer Prevention Trial

The purpose of this study is to see if screening with flexible sigmoidoscopy (a flexible viewing tube) may reduce large bowel cancer and cancer deaths. The researchers also want to see if the addition of screening for occult blood in stools may contribute further to this aim. Additionally, the researchers also want to see to which extent (and in which direction) the study may influence overall endoscopic activity in the general population in the screening area and in areas where controlled screening is not established.

NCT Number	NCT00119912
Lead Sponsor	Norwegian Institute of Public Health Collaborators: Norwegian Cancer Society
Conditions	Colorectal Cancer, Adenoma
Enrollment	100,000 participants
Start Date	1999-01-01
Primary Completion	2036-12 (estimated)
Study Completion	2036-12 (estimated)
Updated on ClinicalTrials.gov	2026-04-14