João Pedro Azevedo

João Pedro Azevedo

Chief Statistician @ UNICEF | Development Economist

CHANGEMEAN

Separate the effect of income growth from distributional change on poverty across 25 welfare measures, covering FGT indices, Watts, Sen, Clark-Ulph-Hemming, and other standard poverty metrics.

SSC Stata SSC GitHub Issues

Installation

Stata ssc install changemean

Description

changemean analyzes how changes in mean income and distribution affect poverty indicators. The module supports 25 different welfare measures:

  • Standard poverty metrics: headcount ratio, poverty gap ratio, income gap ratio
  • Advanced indices: Watts, Sen, Takayama, Thon
  • Foster-Greer-Thorbecke (FGT) indices with multiple parameters
  • Clark-Ulph-Hemming indices with varying beta coefficients

Examples

* Basic usage with weights
changemean rdpc [fw=peso]

* By education group with poverty line variable
changemean rdpc [fw=peso], by(educa) varpl(lp)

* By education group with explicit poverty line and base group
changemean rdpc [fw=peso], by(educa) base(1) line(240)

Citation

Azevedo, J.P. and Franco, S. (2006). “CHANGEMEAN: Stata module to compute Income and Inequality Contribution on Poverty Variation.” Statistical Software Components S456751, Boston College Department of Economics.