Table 2

 Expected health outcomes for alternative screening options for a population of 100 000 individuals invited to attend screening

StrategyScreen-detected cancersSymptomatic cancersCRC deathsCases of CRC avoided(% reduction)CRC deaths avoided(% reduction)
FOBT, faecal occult blood test; FSIG, flexible sigmoidoscopy.
Biennial FOBT at 50–69 years715.883029.681655.00354.70 (8.65%)506.05 (23.42%)
Biennial FOBT at 60–69 years531.733407.881852.79160.80 (3.92%)308.26 (14.26%)
FSIG once at 55 years150.833146.551662.04802.61 (19.57%)499.01 (23.09%)
FSIG once at 60 years240.223032.971636.60826.54 (20.16%)524.45 (24.27%)
FSIG once at 60 years and581.962586.751439.60930.85 (22.70%)721.45 (33.38%)
biennial FOBT at 61–70 years
No screening4100.702161.05