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From |
Roger Newson <[email protected]> |

To |
"[email protected]" <[email protected]> |

Subject |
Re: st: Negative incomes and income components using -sgini- |

Date |
Thu, 28 Apr 2011 15:09:31 +0100 |

Best wishes Roger Roger B Newson BSc MSc DPhil Lecturer in Medical Statistics Respiratory Epidemiology and Public Health Group National Heart and Lung Institute Imperial College London Royal Brompton Campus Room 33, Emmanuel Kaye Building 1B Manresa Road London SW3 6LR UNITED KINGDOM Tel: +44 (0)20 7352 8121 ext 3381 Fax: +44 (0)20 7351 8322 Email: [email protected] Web page: http://www.imperial.ac.uk/nhli/r.newson/ Departmental Web page: http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/ Opinions expressed are those of the author, not of the institution. On 28/04/2011 13:55, David Coyne wrote:

Hello, I've been attempting to decompose the Gini coefficient of a measure C, where C=A-B. I have two questions related to this. First, if C has some values that are negative, how does this affect the interpretation of the Gini coefficient? Second, if B is nonnegative, (i.e. using -sgini- would have me use C=A + (-B), so if (-B)< 0 for all observations) thus leaving me with a negative contribution (s*g*r) to the Gini coefficient of C, does that mean that B has an equalizing effect on C? Not sure of the interpretation of this. Any insight and/or advice would be appreciated! Thanks in advance, -- David Coyne * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

* * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Negative incomes and income components using -sgini-***From:*David Coyne <[email protected]>

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