1. Data aquisition

The EHINZ team acquires data on environmental exposures, health outcomes, population denominators, and geographical information from various source agencies, and it is stored securely on the Massey server.

1.1 Datasets and sources

The full range and detail of these data sets and their data sources are stored in a spreadsheet that includes the following fields:

Data type
  • Environmental exposure data
  • Health outcomes data
  • Population denominator data
  • Geographic Information System (GIS) data
Acquisition types
  • request from the source (with a signed agreement), or
  • download from online portals or websites, or
  • information collated from published reports
Format (file type)
  • SAS dataset, or
  • Excel spreadsheet, or
  • CSV file, or
  • text file, or
  • shapefile, geodatabase, raster, or web layers and services
Format (content)
  • unit record level (ie, per person/event with a unique identifier), or
  • summarised output (ie, counts or rates)
Frequency Mostly annual, but this can vary
Storage File path to where the raw data is stored


1.2 Privacy and security

It is critical that all members of the EHINZ team ensure the privacy and security of the data we acquire and output. 

For data with unit record level information, we usually have a signed agreement with the source agency about the data’s privacy and security. The associated electronic folder(s) storing the data may be password protected with access restricted to specific members of the EHINZ team. 

Please note, we do not share unit record level data outside the EHINZ team, as per our signed agreement with the source agency when requested. 

For more information about the EHINZ security procedures, please refer to A Quick Tour of the Health Information Privacy Code rules document from https://www.privacy.org.nz/privacy-act-2020/codes-of-practice/hipc2020/

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