Development Assistance and Governance Initiative

The poor living in middle income countries, do have some advantages. They’re living in economies that are moving fast. So even if the poor are poor today, there’s probably fairly good prospects that they won’t be poor in five to ten years time, or their children won’t be poor.

It’s a much cruder attempt to obtain [Gallup's self-reported household income data], and yet the results seem broadly in the same range [as the World Bank's]. So it seems that we can assume rough and ready estimates through a much less laborious process.