Whenever I see "five times the risk of . . " I wonder what the risk normally is. If it is one chance in ten, then five times that would be five in ten, which is 50% - very scary, it would mean half could get it.
If it is one chance in ten thousand, then the risk would be five in ten thousand - which is 0.05% - which would mean one in 2,000, better odds!
And if the original chance is one in a million, then the risk would go down a long way. One of you mathematicians out there can have the pleasure of working it out exactly.
What is the risk in the general population of adenocarcinoma of the oesophagus? For smokers v non-smokers?