The 2011-12 NHS and NNPAS collected information by face-to-face interview (and by telephone for the second NNPAS interview) from usual residents of private dwellings in urban and rural areas of Australia, covering about 97% of the people living in Australia. Persons in scope of the survey were those identified by an adult within each sampled private dwelling as a usual resident of that dwelling. Private dwellings are houses, flats, home units, caravans, garages, tents and other structures being used as a place of residence at the time of the survey.
Overseas visitors staying or intending to stay in Australia for 12 months or more were in scope.
The survey excluded residents of:
- non-private dwellings such as hotels and motels, hostels, boarding schools and boarding houses, hospitals, nursing and convalescent homes, prisons, reformatories and single quarters of military establishments (around 2% of the population)
- households which contain members of non-Australian defence forces stationed in Australia
- households which contain diplomatic personnel of overseas governments
- households in Very Remote areas of Australia and discrete Aboriginal and Torres Strait Islander communities (and the remainder of the Collection Districts in which these communities were located). These exclusions are unlikely to affect national estimates, and will have only a minor effect on estimates for individual states and territories, excepting the Northern Territory where the population living in Very Remote areas accounts for around 23% of all persons
- visitors who are not usual residents of the selected dwelling.