In a number of areas of critical interest for policy makers, gender data and indicators are still insufficient or lack comparability across countries. Further effort should be promoted to develop sound gender-based measures in the fields of labour statistics, entrepreneurship and unpaid work, intra-household allocation of resources and gender-based violence. The terms sex and gender are often used synonymously, although in gender research the two concepts have different meanings. Sex refers to the biologically recognised differences between men and women (e.g. chromosomes, internal and external sex organs, hormonal makeup and other secondary sex characteristics). In contrast, the term gender refers to “to the economic, social and cultural attributes and opportunities associated with being male or female” (UNFPA, 2009). Gender is “constantly created and re-created out of human interaction, out of social life, and is the texture and order of that social life” (Lorber, 2001:83).