Updated November 2022 (v1.3)

Four surveys have captured data about family violence over time in Aotearoa New Zealand. The Ministry of Justice uses crime surveys to estimate how many offences New Zealand adults experienced in the last 12 months. The New Zealand
Crime and Safety Survey (NZCASS) [1] was collected
in 2005, 2008, and 2013. It was then replaced by the
New Zealand Crime and Victims Survey (NZCVS) [2], [
3], which has collected data annually since 2018.
These surveys also ask about experiences of lifetime
intimate partner violence (IPV) offences and controlling behaviours. The 2019 New Zealand Family Violence Study [4], [5] surveyed adults about experiences of IPV. Results
for women are comparable with a 2003 study. The
questions cover both past-12-month and lifetime
experiences of physical, sexual, and psychological
IPV, and lifetime experiences of controlling
behaviours and economic abuse.
The Youth20006 survey series provides some
information about the number of secondary school
students impacted by family violence between 2001
and 2019. It has included consistent questions about
witnessing violence at home in the last 12 months.
Each of these surveys cover different aspects of
family violence and different population groups.
Because of different approaches, estimates should
not be directly compared across surveys. (From the document). Record #7829