Table 1.

Summary of content of 12 vignettes: one for each combination of cancer and risk level

	Colorectal	Lung	Pancreas
symptoms for 1 % risk	Diarrhoea on most days	Coughing on most days…unusually tired	Some stomach pain on most days…lost a few pounds (~1.5-3 kg) in weight
symptoms for 2 % risk	Diarrhoea and stomach pain on most days	Coughing on most days…a little out of breath walking up hills…lost a few pounds (~1.5-3 kg) in weight	Some stomach pain on most days…lost half a stone (3.2 kg) in weight
symptoms for 5 % risk	Unusually tired…blood test shows anaemia	Coughing on most days…coughed blood once	Continuous stomach pain…lost half a stone (3.2 kg) in weight
symptoms for 10 % risk	Intermittent bleeding from the back passage (rectal bleeding)…blood test shows anaemia	Coughing on most days…coughed blood a few times…lost half a stone (3.2 kg) in weight	Continuous stomach pain…lost 1 stone (6.4 kg) in weight
test/investigation	Colonoscopy	Chest x-ray	Ultrasound scan followed by CT scan
treatment	Surgery and chemotherapy	“Difficult to treat”	“Difficult to treat”
prognosis/outlook	Early diagnosis may improve outcome	Early diagnosis may improve outcome	Early detection does not necessarily improve survival