Clinical Research Directory

Inclusion Criteria: Participants must be registered in the ULS of Barcelos/Esposende and meet the following criteria: 1. Age between 50 and 74 years. 2. No symptoms such as weight loss in the last 6 months or gastrointestinal symptoms. 3. No prior diagnosis of CRC. 4. No diagnosis of inflammatory bowel disease (ulcerative colitis or Crohn's disease). 5. No family history of CRC in first- and second-degree relatives diagnosed before age 60. 6. No prior fecal occult blood test (FOBT) in the 11 months before receiving the collection kit or no prior sigmoidoscopy or colonoscopy in the last 24 months. Exclusion Criteria: 1. Participants who did not receive the screening kit at home. 2. Participants without a phone number. 3. Participants who do not answer the phone or refuse to participate in the study. 4. Participants unable to consent or perform the screening due to physical, mental, or other conditions that seriously impair comprehension.