Survey mean consumption or income per capita, bottom 40% of population (2005 PPP $ per day) - Country Ranking
Definition: Mean consumption or income per capita (2005 PPP $ per day) used in calculating the growth rate in the welfare aggregate of the bottom 40% of the population in the income distribution in a country.
Source: World Bank, Global Database of Shared Prosperity (GDSP) circa 2007 - 2012 (http://www.worldbank.org/en/topic/poverty/brief/global-database-of-shared-prosperity).
Limitations and Exceptions: Because household surveys are infrequent in most countries and are not aligned across countries, comparisons across countries or over time should be made with a high degree of caution.
Unit of Measure: 2005 PPP $
General Comments: The choice of consumption or income for a country is made according to which welfare aggregate is used to estimate extreme poverty in PovcalNet. The practice adopted by the World Bank for estimating global and regional poverty is, in principle, to use per capita consumption expenditure as the welfare measure wherever available; and to use income as the welfare measure for countries for which consumption is unavailable. However, in some cases data on consumption may be available but are outdated or not shared with the World Bank for recent survey years. In these cases, if data on income are available, income is used. Whether data are for consumption or income per capita is noted in the footnotes. Because household surveys are infrequent in most countries and are not aligned across countries, comparisons across countries or over time should be made with a high degree of caution.