This collaboration extends to all methodological issues, including the design of survey questionnaires or modules within questionnaires, the revision of international classifications and standards and the development of analytical methods and appropriate indicators, among others. Statisticians should be trained in how to incorporate a gender perspective into their regular work, from the design of data collection tools and fieldwork to data analysis and presentation. At the second Global Forum on Gender Statistics, held in Accra in 2009, it was recognized that, despite global efforts and advocacy for gender statistics, including capacity- building activities, there still persist gaps in knowledge of gender statistics among many professionals in national statistical offices (United Nations, 2009).