[guan]

I think they are implying that it could be fraud, but since there are birth certificates available, you couldn’t commit this fraud by simply making up a birth date. So a fraudulent supercentenarian would likely have assumed the identity of someone older, perhaps to claim a pension earlier.

As for the correlations, low incomes would provide a motive for age pension fraud. Short life expectancy being correlated with more supercentenarians suggests it’s not because people in those areas are naturally healthier.