Sample Design from 2015/16: New Zealand Health Survey

Published online: 
15 December 2016
Sample Design from 2015/16: New Zealand Health Survey


This report describes the sample design and sample selection for the New Zealand Health Survey. It is a technical report intended for statisticians looking to understand the detail of the sample design.

A key objective of the sample design is to improve sample sizes for Māori, Pacific and Asian ethnic groups over what would be achieved from a typical multi-stage area sampling design. To do this a dual frame approach is used, combining an area-based sample from New Zealand as a whole with a list-based sample of addresses from the electoral roll.

The sample design was reviewed ahead of the 2015/16 survey year. The most important changes from the design used in the first four years of the continuous New Zealand Health Survey (2011–2014) are as follows.

  • The first stage of the sample selection now uses Statistics New Zealand’s household surveys frame primary sampling units (PSUs) rather than meshblocks.
  • PSUs are selected using Statistics New Zealand’s coordinated selection facility to manage overlaps between various government household surveys.
  • PSUs selected for the area component of the sample are used on two separate occasions in the same calendar year.

Publishing information

  • Date of publication:
    15 December 2016
  • ISBN:
    978-0-947515-90-4 (online)
  • HP number:
  • Citation:
    Ministry of Health. 2016. Sample Design from 2015/16: New Zealand Health Survey. Wellington: Ministry of Health.
  • Ordering information:
    Only soft copy available to download
  • Copyright status:

    Owned by the Ministry of Health and licensed for reuse under a Creative Commons Attribution 4.0 International Licence.

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