Country Description Definition: National estimates of the percentage of the population lying below the poverty line are based on surveys of sub-groups, with the results weighted by the number of people in each group. Definitions of poverty vary considerably among nations. For example, rich nations generally employ more generous standards of poverty than poor nations.
Amount
Although...still not exactly clear what the cut-off is, as this mentions "different standards"... "Once in awhile we get shown the light, in the strangest of places, if we look at it right" - Hunter/Garcia
I agree the question of income distribution is also valuable, but it would seem that we have to look at both.