The main objective of a demographic household survey (DHS) is to provide estimates of a number of basic demographic and health variables. This is done through interviews with a scientifically selected probability sample that is chosen from a well-defined population.
Part 4 of the Tuvalu Maritime Zones Act 2012 states that the exclusive economic zone of Tuvalu comprises those areas of the sea, seabed and subsoil that are beyond and adjacent to the territorial sea, having as their outer limits a line measured seaward from the baseline; which is measured from the low-water line of the seaward side of the reef fringing the coast of any part of Tuvalu or bounding any lagoon waters adjacent to any part of that coast, or where a reef is not present, the low-water line of the coast itself every point of which is not more than 200 nautical miles from the neares
The Household Income and Expenditure Survey (HIES) is a field operation which consists of collecting information in the households based on face to face interview.
The questions asked to the households are related to living standard conditions, expenditures, purchases, incomes.... It is the only survey conducted at a national level which deals with households habits in terms of expenditure and income. As the private and public sector, households represent an economic and social actor of the country which needed to be known.