Evidence and Data for Gender Equality (EDGE) is a three-year initiative led by the United Nations Statistics Division and UN Women, in collaboration with the Food and Agriculture Organization of the United Nations, the World Bank, the Asian Development Bank, the African Development Bank and the Organisation for Economic Co-operation and Development (OECD). One example is the measurement of gender pay gaps. Besides the difficulties in measuring these gaps for self-employed workers, the raw unadjusted gender pay gap, as presented in Annex 4, captures the difference between men's and women's earnings but does not tell us enough about the underlying drivers of gender inequality in pay.