Ideas to Action:

Independent research for global prosperity

CGD Policy Blogs


Nancy Birdsall to Deliver Kapuscinski Development Lecture in Berlin

On February 23, CGD President Nancy Birdsall will deliver the first Kapuscinski Development Lecture of 2016 in Berlin, Germany. Her lecture, “The New Middle Class in the Developing World: Does It Matter?” will take a hard look at what it means to be middle class in developing countries and explore the role of strugglers, the rapidly expanding group of people caught between extreme poverty and the middle class.

The World Bank’s Poverty Statistics Lack Median Income Data, So We Filled In the Gap Ourselves — Download Available

PovcalNet, the World Bank’s global poverty database, provides all kinds of country statistics, including mean income, the share (and number) of the population living in absolute poverty ($1.90), the poverty gap and several measures of income inequality, such as the Gini coefficient. But one thing it doesn’t provide is median income or consumption. The median is a better measure of “typical” well-being than the mean, which is always skewed to the right.

We’ve been waiting for the World Bank to add these medians to its PovcalNet database, but we got impatient and did it ourselves. By manually running a few hundred queries in PovcalNet, we now have (and can share with you) the latest median income/consumption data for 144 countries (using 2011 PPPs — more on our methods below).