Table 2 Patient eligibility criteria

Attending for a Periodic Health Examination

Walk-in patients

Males and females 50 to 74 years of age

Having had a colonoscopy in the last 10 years

No symptoms of colorectal cancer

Having had a flexible sigmoidoscopy within the last 5 years

No personal history of CRC, polyps, or diseases of the colon requiring monitoring by colonoscopy (Crohn’s Disease or Ulcerative Colitis)

Having a double contrast barium enema within the last 5 years

Have a first degree relative with CRC affected at age greater than 60

Have two or more second degree relatives with polyps or cancer