GGGR 2023
Page 75 of 382 · WEF_GGGR_2023.pdf
Endnotes
1. See Hausmann, 2016, for further detail.
2. Following a methodology originally developed by the United Nations Development Programme (UNDP), the Global
Gender Gap Index estimates the average income earned by women, relative to income earned by men, in a calculation
that takes into account a country’s GDP per capita (US$), the share of women and men in the labour force, and their
mean nominal wages. To account for globally rising income levels, beginning with 2018’s edition, the report no longer
caps the maximum income per capita value considered in the calculation. This follows UNDP’s own adjustment of the
methodology and the fact that the $40,000 cap formerly used in previous editions of the Global Gender Gap Index had
increasingly lost some of its ability to discern the level of gender-based income disparities among high-income nations
such as the Nordics, the United States and the member states of the Gulf Cooperation Council. For a full overview of the
2016 methodology change, please refer to that report edition’s Appendix D.
3. For more information about the Executive Opinion Survey, see Appendix B.
4. The report utilizes the United Nations Population Division’s World Population Prospects as a source for the sex ratio at
birth indicator. Previous editions of the report had utilized data from the U.S. Central Intelligence Agency’s World Factbook
as an alternative data source.
5. This ratio is based on what is considered to be a “normal” sex ratio at birth: 1.06 males for every female born. See Klasen
and Wink, 2003.
6. This ratio is based on the standards used in the UNDP’s Gender-Related Development Index, which uses 87.5 years as
the maximum age for women and 82.5 years as the maximum age for men.
7. A first attempt to calculate the gender gap was made by the World Economic Forum in 2005; see Lopez-Claros and
Zahidi, 2005. The 2005 index, which was attempting to capture women’s empowerment, used a scale in which the
highest score was assigned to the country with the biggest gap in favour of women.
8. As in previous editions of the index, weights derived for the 2006 index were used again this year to allow for
comparisons over time. They may be revised in future editions to reflect the evolution of the gender gap over the past
decade.
9. Strictly, in the case of the Health and Survival subindex, the highest possible value a country can achieve is 0.9796.
However, for purposes of simplicity, we will refer to this value as 1 throughout the chapters and in all tables, figures and
Country Profiles.
10. Because of the special equality benchmark value of 0.9796 for the Health and Survival subindex, the equality benchmark
for the overall index score is not strictly 1. This value is in fact (1 + 1 + 1 + 0.9796) / 4 = 0.9949. However, for purposes
of simplicity, we will refer to the overall equality benchmark as 1 throughout the chapters and in all tables, figures and
Economy Profiles.
11. Since the indicators in the subindexes are weighted by the standard deviations, the final scores for the subindexes and
the overall index are not a pure measure of the gap vis-à-vis the equality benchmark, and therefore cannot be strictly
interpreted as percentage values measuring the closure of the gender gap. However, for ease of interpretation and
intuitive appeal, we will be using the percentage concept as a rough interpretation of the final scores.
12. “Impact of the pandemic on ILO modelled estimates and projections”, ILOSTAT Database Description: ILO Modelled
Estimates ( ILOSTAT database) https://ilostat.ilo.org/resources/concepts-and-definitions/ilo-modelled-estimates/
13. UNDP , 2022.
14. International Standard Classification of Occupations (ISCO), https://www.ilo.org/public/english/bureau/stat/isco/docs/
groupdefn08.pdf.
15. International Standard Classification of Education (ISCED), http://uis.unesco.org/sites/default/files/documents/
international-standard-classification-of-education-isced-2011-en.pdf.
Global Gender Gap Report 2023
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