Nathan - Thanks for the reply. What I am actually looking for are some numbers as to how many people fail the class one medical. Most of the guy I knew had a heart murmur. One stopped drinking gallons of coffee a day and started going to the gym / another had to have minor surgery. One guy had blood in the urine but this seemed to resolve itself.
The other seven had to stop flying.
So as if say I know / 1,000 pilots and 10 failed their medical my unscientific estimate would be that 1% of pilots fail a class one. 0.7 % will have to retire and find another way of making a living.
I personally never want to go back to what I was doing before I started flying. Worked a lot harder / and paid a lot less. Loss of licence insurance doesn't even cover the mortgage.
My insurance is trying to keep fit.