Discussion

Amongst other things National Statistical Offices (NSO) and their coordinating bodies strive for information production strategies that are fit for their intended uses, cost efcient and can control respondent burden to an acceptable level. A common theme is survey integration (High-Level Group for the Modernisation of Ofcial Statistics 2014; Priest, G. 2010; and United Nations Statistics Division and the Statistical Ofce of the European Union 2015), which in addition has the desirable effect of leading towards improved coherence of statistical information across survey programs and between countries. These objectives are often characterized in terms of standardized production processes, commonly accepted concepts, and harmonized survey questionnaire content.