Table 2

Positivity rate, PPV and detection rate (n and % with 95% CI) for CRC and AA

MenWomenAll
n% (95% CI)n% (95% CI)n% (95% CI)
Positivity*2722.8 (2.5 to 3.1)2962.4 (2.2 to 2.7)5682.6 (2.4 to 2.8)
PPV test for CRC†186.6 (4.0 to 10.3)196.4 (3.9 to 9.8)376.5 (4.6 to 8.9)
PPV test for AA‡7025.7 (20.6 to 31.4)4615.5 (11.6 to 20.2)11620.4 (17.2 to 24.0)
PPV colonoscopy for CRC§189.0 (5.4 to 13.8)198.8 (5.4 to 13.4)378.9 (6.3 to 12.0)
PPV colonoscopy for AA¶7034.8 (28.3 to 41.8)4621.3 (16.0 to 27.4)11627.8 (23.6 to 32.4)
CRC detection rate**181.8 (1.1 to 2.9)191.6 (0.9 to 2.4)371.7 (1.1 to 2.3)
AA detection rate††707.2 (5.6 to 9.1)463.8 (2.8 to 5.0)1165.3 (4.4 to 6.3)
  • *The proportion of participating persons with a test result at or above the cut-off level out of those with an assessable stool sample.

  • †The proportion of persons with CRC out of those with a positive test result.

  • ‡The proportion of persons with AA out of those with a positive test result.

  • §The proportion of persons with CRC out of those who underwent a colonoscopy.

  • ¶The proportion of persons with AA out of those who underwent a colonoscopy.

  • **The proportion of persons with CRC out of those with an assessable stool sample.

  • ††The proportion of persons with AA out of those with an assessable stool sample.

  • AA, advanced adenoma; CRC, colorectal cancer; PPV, positive predictive value.