I cannot understand the statistics.

"The report, conducted by Deloitte Access Economics and commissioned by Parkinson’s Australia, found 20 per cent of Australians afflicted with Parkinson’s are of working age - between 15 and 65. About 10 per cent are under 40."

Diagnosed under 40 years of age = 10%. Diagnosed between 15 and 65 = 20%. Under 15 is likely to be almost 0. So, we are left with 10% diagnosed between 40 and 65. In other words, the piece suggests that as many people are diagnosed under 40 as between 40 and 65. This does not tally with my experience. The word "about" is used, but how flexible can that be? Or, do they mean 10% of the 20% are under 40?

John