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How we keep IDI and LBD data safe

This page presents the ways we keep Integrated Data Infrastructure (IDI) and Longitudinal Business Database (LBD) data safe. The data we collect and link in the IDI and LBD is used for research and statistical purposes to inform decision-making by New Zealanders, businesses, and government.

Legal requirements

The Statistics Act 1975, the Privacy Act 1993, and the Tax Administration Act 1994 require us to protect the data we collect.

See Privacy, security, and confidentiality of information supplied to Stats NZ for Stats NZ's privacy statement.

For the public good

We all want to live in a country where the population is healthy, safe, and educated.

Integrated data is a valuable tool for identifying actions and evidence-based solutions to improve outcomes for New Zealand, particularly when underlying causes are complex and funding is constrained.

For an IDI or LBD research proposal to be accepted, the proposal must show how the intended research is for the public good. By only approving research that meets this criteria, we are able to ensure that the benefits of integrated data outweigh the risks.

See research we commissioned on Public attitudes to data integration.

The five safes

We use a ‘five safes’ framework to ensure that we provide access to data only if all of these five conditions are met.

The 'five safes' framework for the IDI and LBD

The five safes

  1. Safe people – researchers can be trusted to use data appropriately and follow procedures.
    Researchers must pass referee checks before we allow them to work with data. We require them to sign a declaration of secrecy under the Statistics Act 1975 and follow our rules and protocols. Researchers who break our protocols can be banned, blacklisted, or prosecuted.
  2. Safe projects – the project has a statistical purpose and is in the public interest.
    Research is restricted to the analysis of groups, not individuals, and must be in the public interest. This means that the research is focused on finding solutions to issues that are likely to have a wide public benefit. The Government Statistician or delegated authorised person signs off all research proposals.
  3. Safe settings – security arrangements prevent unauthorised access to the data.
    Data can only be accessed through a secure Data Lab environment. Computers are not connected to a network and only Stats NZ staff can release data to researchers.
  4. Safe data – the data inherently limits the risk of disclosure.
    We de-identify data, which means we remove personal identifying information such as names and addresses, and encrypt (ie replace with another number) identifiers such as IRD and NHI numbers. See our de-identified data fact sheet for more information about the benefits, risks, and possible uses of de-identified data. Researchers in the IDI get access only to the data relating to their research; researchers in the LBD get access to all LBD data.
  5. Safe output – the statistical results produced do not contain any identifying results.
    Researchers must confidentialise output before it can be released from the Data Lab, and Stats NZ staff double-check results to ensure individuals cannot be identified. See Microdata output guide for the methods and rules researchers must use for confidentialising output produced from Stats NZ's microdata.

Privacy impact assessments

Privacy impact assessments for the IDI and LBD provide a systematic evaluation of the privacy risks associated with integrating data from a number of sources into our integrated databases. They also summarise some of the expected benefits of the IDI and LBD.

See Privacy impact assessments for the IDI and LBD.

Updated 15 November  2017

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