changemean compute the contribution of changes in the mean and the distriubtion on several welfare indicators.

The following welfare measures are currently supported:

• h : headcount ratio [FGT(0)] (default value)
• h2 : extremem poverty headcount ratio
• pgr : poverty gap ratio [FGT(1)]
• igr : income gap ratio
• w : Watts index
• s : Sen index
• tak : Takayama index
• thon : Thon index
• fgt1 : Foster, Greer and Thorbecke - FGT(0.5)
• fgt2 : Foster, Greer and Thorbecke - FGT(1.5)
• fgt3 : Foster, Greer and Thorbecke - FGT(2)
• fgt4 : Foster, Greer and Thorbecke - FGT(2.5)
• fgt5 : Foster, Greer and Thorbecke - FGT(3)
• fgt6 : Foster, Greer and Thorbecke - FGT(3.5)
• fgt7 : Foster, Greer and Thorbecke - FGT(4)
• fgt8 : Foster, Greer and Thorbecke - FGT(4.5)
• fgt9 : Foster, Greer and Thorbecke - FGT(5)
• chu1 : Clark, Ulph and Hemming index with beta of 0.10
• chu2 : Clark, Ulph and Hemming index with beta of 0.25
• chu3 : Clark, Ulph and Hemming index with beta of 0.50
• chu4 : Clark, Ulph and Hemming index with beta of 0.75
• chu5 : Clark, Ulph and Hemming index with beta of 0.90

Joao Pedro Azevedo & Samuel Franco, 2006. "CHANGEMEAN: Stata module to compute Income and Inequality Contribution on Poverty Variation," Statistical Software Components S456751, Boston College Department of Economics, revised 17 Sep 2010.

This module should be installed from within Stata by typing "ssc install changemean". Windows users should not attempt to download these files with a web browser.

poverty gap; inequality; income distribution

João Pedro Azevedo
jazevedo@worldbank.org
World Bank
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