Section 3: Survey population and sample design This section describes the target population, the survey population and the sample design for the NZHS. Target and survey population The target population is the population the survey aims to represent. The survey population is the population that was covered in the survey. Target population The target population for the NZHS is the New Zealand resident’ population of all ages, ‘usually including those living in non-private accommodation. The target population is approximately 3.6 million adults (aged 15 and over) and 0.9 million children (aged from birth to 14 years), according to the Statistics New Zealand Census population figures for 2013. Previously (2006/07 and earlier), the NZHS included only people living in private accommodation. The target population for the current NZHS includes people living in accommodation to improve coverage of older people in an ageing population. Survey population Approximately 99 percent of the New Zealand usually resident population of all ages is eligible to participate in the NZHS. For practical reasons, a proportion of the target population is excluded from the survey population. The following are excluded from the survey population: most types of non-private dwellings (prisons, hospitals, hospices, dementia care units and hospital-level care in aged-care facilities) households located 0n islands other than the North Island, South Island and Waiheke Island. Included in the survey population are people living in aged-care facilities (rest homes) and those temporarily living away from their household in student accommodation (university hostels and boarding schools). Sample design The sample design for the NZHS has been developed by the National Institute for Applied Statistics Research Australia (NIASRA), University of Wollongong, Australia. The sample design used in the current year, year 5 or 2015/16, is slightly different from the sample design used in the previous four years. The main changes are listed below. The first-stage selection units are now Statistics New Zealand’s household surveys frame primary sampling units (PSUs) rather than census meshblocks used in the previous four
Section 3: Survey population and sample design This section describes the target population, the survey population and the sample design for the NZHS. Target and survey population The target population is the population the survey aims to represent. The survey population is the population that was covered in the survey. Target population The target population for the NZHS is the New Zealand ‘usually resident’ population of all ages, including those living in non-private accommodation. The target population is approximately 3.6 million adults (aged 15 and over) and 0.9 million children (aged from birth to 14 years), according to the Statistics New Zealand Census population figures for 2013. Previously (2006/07 and earlier), the NZHS included only people living in private accommodation. The target population for the current NZHS includes people living in accommodation to improve coverage of older people in an ageing population. Survey population Approximately 99 percent of the New Zealand usually resident population of all ages is eligible to participate in the NZHS. For practical reasons, a proportion of the target population is excluded from the survey population. The following are excluded from the survey population: most types of non-private dwellings (prisons, hospitals, hospices, dementia care units and hospital-level care in aged-care facilities) households located 0n islands other than the North Island, South Island and Waiheke Island. Included in the survey population are people living in aged-care facilities (rest homes) and those temporarily living away from their household in student accommodation (university hostels and boarding schools). Sample design The sample design for the NZHS has been developed by the National Institute for Applied Statistics Research Australia (NIASRA), University of Wollongong, Australia. The sample design used in the current year, year 5 or 2015/16, is slightly different from the sample design used in the previous four years. The main changes are listed below. The first-stage selection units are now Statistics New Zealand’s household surveys frame primary sampling units (PSUs) rather than census meshblocks used in the previous four
methodology-report-2015-16-nzhs-dec16.docx