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How researchers are using the IDI

This page provides information on how researchers are using the Integrated Data Infrastructure (IDI).

How integrated data helps researchers

Researchers use integrated data to gain more insight into areas that will improve the social and economic outcomes of New Zealanders. The IDI and the Longitudinal Business Database (LBD) are used to answer research, policy, and evaluation questions across many subject areas. The research is used to better inform decision-makers to help solve complex issues that affect us all, such as crime and vulnerable children.

To find out more about the IDI and how it is used, view the video below, ‘Better data, better lives: How integrated data is shaping New Zealand’.

Here are two examples of  how researchers have used integrated data:

  • Careers NZ's Compare study options helps young people make better decisions about where their study choices can lead them. The Ministry of Education created this tool by using combined student loan, tax, and education data. 
  • The value of safe data sharing is a video that shows how the Ministry of Education has used integrated data to identify the pathways of groups of students through the education system and beyond.

Research projects

Select a link for a list of projects by topic:

Benefits and social services

MAA2016-40 Quantifying the size and characteristics of the transient population in New Zealand

The Social Policy Evaluation and Research Unit (SuPERU) has commissioned the New Zealand Work Research Institute (NZWRI) at AUT to carry out new research to answer the following two questions:

a) What is the scale of transience in New Zealand?
b) What are the characteristics of transient populations in New Zealand, and ‘vulnerable’ transient populations in New Zealand in particular?

The goal of this research is to help inform policy thinking and decision-making about the design and improvement of services to meet the needs of the government’s most vulnerable customers. The planned outcomes include a report identifying and discussing the feasibility of using existing government agency administrative datasets, including the Statistics New Zealand IDI, to quantify the experience of transience in the New Zealand population, and in particular vulnerable transience. This report will include recommendations and project plan for undertaking an analysis of existing administrative data to answer the questions. The second phase of this study is to then utilise these datasets to quantify the scale of transience in New Zealand and then discussing the results in the context of the published New Zealand and international literature.

Gail Pacheco, Chao Li, Kabir Dasgupta and Nan Jiang
SUPERU
Contact: gail.pacheco@aut.ac.nz

MAA2016-32 Measuring the impacts of potential social policy

Researchers currently have excellent data on the benefit population (particularly main beneficiaries) however there are substantial gaps in our knowledge particularly around clients who only receive supplementary benefits, New Zealand Superannuation, or are not currently receiving a benefit.

Accessing the IDI data to better inform our understanding and fill these gaps in our knowledge is the main aim, which will in turn allow researchers to better measure the impact of potential social policy.

The initial focus of this research will be analysing the impact of immigration policy (specifically temporary migrant visas) on the labour market, particularly looking at the impact on beneficiaries gaining employment.

Ainsley Smith, Lawrence Ng and Keith McLeod
Ministry of Social Development and Ministry of Business, Innovation and Employment
Contact: ainsley.smith064@msd.govt.nz

MAA2016-18 Adding colour to the investment approach

The work and income investment approach has focused on the lives of New Zealanders who have received main benefits, with the emphasis on their levels of dependence on government benefits and characteristics that make them vulnerable to being dependent on the government for support. Additional information from the IDI will provide further understanding of the lives of these people, and offer insights into factors that indicate resilience, and others that indicate potential for long term dependency.

Craig Davis and Jeffrey Azzato
Ministry of Social Development
Contact: craig.davis036@msd.govt.nz

MAA2016-15 Supporting the Social Investment Unit to understand the social, economic and fiscal impact of social services on individuals

Social investment is about improving the lives of New Zealanders by applying rigorous and evidence-based investment practices to social services. It means using information and technology to identify those people for whom additional early investment will improve long term outcomes, better understanding their needs and what works for them, and then adjusting services accordingly. What is learnt through this process informs the next set of investment decisions.

Basically, the aim of the research is to investigate both the impact of interventions/services on the clients and their quality of life etc. and to evaluate the cost of these services in a ‘return of investment’ analysis.

Craig Wright, Conrad MacCormick and Zahra Cassin
Social Investment Unit
Contact: conrad.maccormick@ssc.govt.nz 

MAA2016-02 Off-benefit transitions: where do people go?

The research will seek to answer the following questions:

  • What type of transitions off benefits occur?
  • What are the characteristics of the individuals associated with the different types of transitions?
  • Have transitions changed over time?

Jason Timmins, Laura Dixie and Ben Locke
SUPERU
Contact: jason.timmins@superu.govt.nz

MAA2015-39 Impact of limited services volunteers (LSV) programme on participant’s outcomes

This research proposal is a programme of evaluation of a motivational training programme run by the NZ Defence Force. The research project will be looking at estimating the impact of the programme on the participant's outcomes. The researchers will look at employment, earnings, justice and corrections outcomes.

Marc de Boer and Bryan Ku
Ministry of Social Development
Contact: marc.deboer001@msd.govt.nz 

MAA2015-27 IDI-based micro-simulation modelling of the New Zealand tax and welfare system

The proposed study will investigate using IDI for a micro-simulation model of the tax and welfare systems. Presently, MSD, IRD, and Treasury each use different databases for their specific needs, based on what is available to them. Using IDI allows for multiple datasets to be used in concert, facilitating using a shared model across the agencies. This model should have greater depth and breadth than the individual models, improving the evidence-based advice each agency provides.

Evan Thompson, Conrad MacCormick, Phil McCaffrey, Josh Teng, Sean Comber, Brett Stawinski, Emily Irwin, Sarah Crichton, Sylvia Dixon, Christopher Ball, and Penny Mok
Ministry of Social Development, IRD, and The Treasury
Contact: brett.stawinski@treasury.govt.nz 

MAA2014-11 Investing in better outcomes

The over-arching objective of the proposed research is to increase the effectiveness of MSD policies and interventions to improve the outcomes of New Zealanders.

David Rea, Marc De Boer, Jared Forbes, Debra Small, Moira Wilson, Phil Spier, and Michelle Bly
Ministry of Social Development
Contact: david.rea001@msd.govt.nz

MAA2013-16 Citizen pathways through human services

This project is an initial broad exploration into the pathways and transitions that people take, specifically, to quantify the flows and distributions; identify some of the predictive factions that link common cohorts of citizens to particular flows. The IDI is the only data source for this type of project as it includes linked information on a number of administrative collections.

Sarah Crichton
New Zealand Treasury
Contact: sarah.crichton@treasury.govt.nz 

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Business and employment

MAA2016-50 Longer term labour market outcomes of ACC clients post rehabilitation

This research looks at the longer term labour market outcomes for a group of seriously injured ACC clients post rehabilitation in terms of employment and income. The project will provide a strong evidence base for policy thinking to support people who were injured to achieve better, and more sustainably outcomes.

Chris Barnett and Jean-Christopher Somers
Ministry of Business, Innovation and Employment
Contact: chris.barnett@mbie.govt.nz

MAA2016-28 An expenditure based estimate of income under-reporting in New Zealand

This project is looking at finding evidence of self-declared income being under reported by tax payers. These tax payers would likely be people who can self-report and therefore have opportunity to manipulate or falsify their reports. The main aim of this study is to confirm that this practice is happening and the practice is identifiable, but will stop short of actually identifying any individuals.

The evidence will allow Inland Revenue to both enhance their own understanding of the Tax System and also begin to measure the 'black economy'.

Dean Comber and Alex Collier
Inland Revenue Department
Contact: sean.comber@ird.govt.nz

MAA2016-19 2016 Pacific economic trends and snapshot

This project intends to use the LEED data to produce an update of the 2013 Pacific Economic Trends and Snapshot report. This report provides an overview of key economic and demographic trends for Pacific people across New Zealand. The existing report is widely used across MBIE, and the policy teams anticipate the 2016 refresh of the data will be a key reference document in the coming years.

Luke Smith and Dion Gamperle
Ministry of Business, Innovation and Employment
Contact: luke.smith@mbie.govt.nz

MAA2016-17 Are New Zealanders adequately prepared financially for retirement?

The objective of the project is to provide information about the wellbeing of retired New Zealanders in terms of adequacy and replacement rates while accounting for factors affecting retirement income.

The research will be using the Life Cycle Hypothesis Model to assess wellbeing levels or retired New Zealanders by investigating the relationship between retirement wealth, consumption, expenditure and liquidity levels.

Jelita Noviarini
University of Otago
Contact: novje170@student.otago.ac.nz

MAA2016-04 An economic analysis of post-tertiary outcomes in New Zealand using linked administrative data

This research proposal is to investigate the early outcomes of tertiary graduates. Specifically, the researchers are interested in the types of jobs and earnings of graduates, the continuity and turnover in employment and their likelihood of leaving New Zealand.

Professor Tim Maloney, Professor Basil Sharp, Professor Geoff Perry and Dr Nan Jiang
Auckland University of Technology
Contact: tim.maloney@aut.ac.nz 

MAA2015-51 Labour mobility as a channel for productivity knowledge spillovers

This project seeks to look at labour mobility as a channel for productivity knowledge spillovers. Researchers want to look at how knowledge from companies with high productivity shifts to companies with lower productivity when individuals move to a new company. The LBD will be used to work out productivity measures for different firms and to control for the characteristics of these firms. The IDI will be used to investigate the effects of different characteristics of workers. It will also measure the benefits to workers in terms of remuneration for their ability to pass on their knowledge in regards to productivity. This research will also look at the flow of information/workers across and within different industries.

Michael Kirker and Lynda Sanderson
The Treasury
Contact: lynda.sanderson@treasury.govt.nz

MAA2015-43 Human capability in New Zealand’s primary sector

The project will use the Integrated Data Infrastructure to answer research questions of interest to the participating organisations that relate to human capability in the primary sector.
Particular research areas include:

  • understanding workforce composition
  • understanding industry tenure and replacement rate
  • understanding current workforce skills (qualifications) levels.

Adam Barker, Denny Hioe, Mark Hampshire, and Sergei Koudrin
Ministry for Primary Industries
Contact: adam.barker@scarlatti.co.nz

MAA2015-10 Government policy and the labour market

Motu are working on a large project that will investigate how government policy affects the behaviour and outcomes of the labour market. This section of the project will be investigating the effect of the 90-day trial periods of employment and how its introduction has affected firms' hiring policies and attitudes, and how those changes have then affected disadvantaged job seekers.

Nathan Chappell, Dr David Maré, and Dr Isabelle Sin
Motu Economic and Public Policy Research
Contact: isabelle.sin@motu.org.nz

MAA2014-33 Managing safe, productive, and profitable workplaces: Trade-off or win-win?

The government aims to improve productivity and economic growth while also reducing workplace injury. This research will investigate the relationship between human resource management (HRM) practices, management of health and safety responsibilities, and worker and firm outcomes. It can be seen as broken down in to three main research questions:

  • Are better-managed firms also better at health and safety (management)?
  • Do better-managed firms have less workplace accidents and does this help explain performance differences across firms?
  • How much of the apparent relationship in (2) is due to worker sorting?

Michelle Poland
Worksafe New Zealand
Contact: michelle.poland@worksafe.govt.nz

MAA2014-31 The dynamics of the state service workforce

This project will test the feasibility of linking SSC's human resource capability (HRC) survey of state service payroll data, with Statistics New Zealand's IDI to produce new information on the dynamics of the state sector workforce and then to carry out research using their linked results.

The project will help SSC in two of its key roles:

  • Understanding how the state services are changing.
  • Helping build state sector workforce and leadership capability.

Tas Papadopoulos
State Services Commission
Contact: tas.papadopoulos@ssc.govt.nz

MAA2014-26 International revenue growth and exporting businesses – assessing the coverage and impact of NZTE

NZTE works closely with a set of committed firms to help them increase their international revenue (that is, income from trade in goods and services, royalties, and overseas investment).

This project seeks to do two things:

  • Measure and understand the opportunity to further work with NZ exporting firms – NZTE has received funding to expand its set of customers and needs guidance about where to seek appropriate export firms.
  • Understand the impact that NZTE has on this group’s international revenue, and whether it is effectively identifying which of these committed firms to engage with.

John Holt
NZ Trade and Enterprise
Contact: john.holt@nzte.govt.nz

MAA2014-23 The impacts of minimum wage changes on the New Zealand labour market

Previous research has examined the impact of two different changes in minimum wage laws on labour market outcomes for youth. This research found that the impacts varied depending on the circumstances. In this project the researchers are planning to examine these policy changes in the context of a model of the youth labour market to better understand under which circumstances minimum wage increases lead to better outcomes for youth.

Dr Isabelle Sin
Motu Economic and Public Policy Research
Contact: isabelle.sin@motu.org.nz

MAA2014-20 Linking remittances: Inflows of remittances to the Pacific and their effect on economic development

The researchers wish to identify the reasons for the remittance and whether the remittances are being used for personal reasons or for small businesses in the Pacific islands. This will help highlight small business investment opportunities in the islands from firms in New Zealand and Australia.

Alberto Posso
Royal Melbourne Institute of Technology
Contact: alberto.posso@rmit.edu.au

MAA2014-17 Firm behaviour and corporate tax reform in New Zealand

The researchers wish to differentiate the various groups of firms and deal with tax reform and what effect taxation change has on firm investment using the data from the 2005 and 2008 tax reform changes as included in the LBD.

John Creedy, Norman Gemmell, Florian Misch, and Lynda Sanderson
Economic Research and Analysis Team, New Zealand Treasury
Contact: angela.mellish@treasury.govt.nz

MAA2013-23 Using the Longitudinal Business Database (LBD) to better understand New Zealand’s productivity and improve policy

This project represents a wider programme of work under the auspices of the Productivity Hub including both the undertaking of policy relevant research and the building of capability across the Hub’s partner agencies and the wider public sector.

Paul Conway
Productivity Commission
Contact: paul.conway@productivity.govt.nz

MAA2013-10 Impacts of foreign direct investment on labour market earnings

This project is supported by Treasury and aims to examine the role of foreign-owned firms in importing and building human capital in New Zealand.

Lynda Sanderson
New Zealand Treasury
Contact: lynda.sanderson@treasury.govt.nz

MAA2012-17 Labour market dynamics and transitions

Research is being conducted for MBIE and focuses on:

  • evaluating the impact of further tertiary education and training on beneficiaries' labour market outcomes
  • evaluating the impact of wage subsidies on beneficiaries' labour market outcomes and firm employment
  • describing labour market transitions
  • describing youth transitions
  • describing beneficiaries' transitions
  • describing beneficiaries' labour force status and intentions to seek work in the future

Keith McLeod
Ministry of Business, Innovation and Employment
Contact: keith.mcleod@mbie.govt.nz

MAA2012-16 Firm performance, productivity, innovation, and skills

The purpose of this research programme is to investigate:

  • The persistence of skill shortages and their impact on firm performance
  • Cyclical labour market adjustment
  • Innovation, skills, firm productivity, and performance

Sarah Crichton
Ministry of Business, Innovation and Employment
Contact: sarah.crichton@treasury.govt.nz

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Education and training

MAA2016-13 What are the characteristics associated with the tertiary education participation, retention and completion rates of Māori and Pasifika learners?

The purpose of this study is to update and extend previous work completed by Earle (2008) – āori achievement in bachelors degrees revisited. The analysis to be undertaken aims to explore how participation, retention and completion for Māori and Pasifika learners differ to those of other ethnic groups. And to what extent can these differences be explained by differences in (a) prior school achievement or (b) socio-economic status.

Gail Pacheco, Guanyu Zheng, Zoe Pushon and Lisa Meehan
New Zealand Productivity Commission
Contact: zoe.pushon@productivity.govt.nz

MAA2015-20 Credit and education: The short- and long-run effects of financial aid for struggling students

Research is looking at how limiting access to student loans and benefits will have an effect on attaining tertiary degrees. Researchers will compare students that just fail to meet eligibility for student loans to those barely meeting the requirements. They will also look at the outcomes of education for those whose study has been in part completed with the aid of financial assistance.

Victoria University of Wellington
Harold E Cuffe and Luke Chu
Contact: harold.cuffe@vuw.ac.nz

MAA2015-11 Evaluating performance-linked funding

Motu are assessing to what extent the educational performance indicators, used under the performance linked funding (PLF) system, to evaluate tertiary education organisations, capture value added by the tertiary study. In addition, the project wants to examine to what extent the indicators merely capture the backgrounds of the students who enrol. Finally it will investigate whether the introduction of PLF has caused tertiary education institutions to change their admission or teaching behaviour.

Sherry Wu and Dr Isabelle Sin
Motu Economic and Public Policy Research
Contact: isabelle.sin@motu.org.nz

MAA2015-04 The outcomes for tertiary education in New Zealand

Tertiary Education Commission (TEC) are beginning to look at analysis of IDI data directly where they concern themselves with pathways from education and employment. In the past they have conducted research via other research units (MoE, MBIE, Motu etc) but are now looking to expand that research by investigating returns at a more disaggregated level and for a bigger range of student population groups. TEC will also factor in more characteristics of the students (sex, age, ethnicity, etc) and their effect on those returns.

Sergei Koudrin, Katie Sadetskaya, and Anne Broadbent
Tertiary Education Commission
Contact: sergei.koudrin@tec.govt.nz

MAA2013-17 Student loan and allowances – analysis, costing, and valuation

This is a continuation of the Student Loans and Allowances fair valuation conducted by the Ministry of Education and their delegates. It examines the impact and cost of student support policy proposals; analysing the performance and outcomes of the student support system; and supporting the valuation of the Student Loan Scheme.

Jamie Hyatt
Ministry of Education
Contact: jamie.hyatt@minedu.govt.nz

MAA2013-04 How much of tertiary graduates’ earnings premium is due to their education?

This research aims to investigate the extent to which the earnings benefit young graduates enjoy is due to their tertiary educational achievement and how much is attributable to innate ability and attitudinal factors.

Zaneta Park
Ministry of Education
Contact: zaneta.park@minedu.govt.nz

MAA2013-03 Who doesn’t participate in tertiary education?

This project provides a statistical profile (ie demographic and educational characteristics) of those who leave school and don’t go into tertiary education. It explores the labour market outcomes of those people, including incidence of benefit receipt, disengagement from the labour market, and earnings.

Zaneta Park
Ministry of Education
Contact: zaneta.park@minedu.govt.nz

MAA2013-02 Provider-based 'managed' apprenticeships – an exploration

This research is exploratory data analysis of the earning and work records of tertiary students in the IDI to investigate the numbers of managed apprenticeships and their outcomes (post study destinations and earnings).

Paul Mahoney
Ministry of Education
Contact: paul.mahoney@minedu.govt.nz

MAA2012-19 Developing and analysing tertiary education outcome indicators for graduates

The project proposed by the Ministry of Education aims to use the IDI to investigate the development of new measures of: 'graduate destinations' (what graduates do after graduation) and employment outcomes for graduates.

Roger Smyth
Ministry of Education
Contact: roger.smyth@minedu.govt.nz

MAA2012-14 Education and skills

This research is being conducted for MBIE and focuses on:

  • describing migration patterns and border movements of graduates and students 
  • evaluating the impact of further tertiary education and training on labour market outcomes 
  • describing youth transitions.

Keith McLeod
Ministry of Business, Innovation and Employment
Contact: keith.mcleod@mbie.govt.nz

MAA2012-10 Measuring cohort participation, completion, and outcomes to inform performance measures for tertiary education

The purpose of the research is to use a birth cohort approach to measuring tertiary participation, completion, and outcomes at a population level. This will be used to inform performance measures of tertiary education.

David Earle
Ministry of Education
Contact: david.earle@minedu.govt.nz

MAA2012-08 The factors associated with student loan borrowers not being able to repay their loans, or to only repay very slowly

The project is investigating factors that affect the rate of repayment of student loans. A clearer understanding of the characteristics of slow re-payers, and their attitudes and experience, will provide insights that could help plan policy interventions or operational changes that will address the problem of slow repayment.

Ralf Engler
Ministry of Education
Contact: ralf.engler@minedu.govt.nz

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Families and households

MAA2016-47 Exploring the economic causes and consequences of childhood maltreatment

This study seeks to understand the economic causes and consequences of child maltreatment using linked integrated data.

The particular focus of this study is:

1) To investigate the role of economic circumstances on child maltreatment by analysing the impact of welfare policies and macroeconomic conditions on child maltreatment rate.
2) To investigate the long term consequences of childhood maltreatment in the domain of education, crime and fertility.

Rhema Vaithianathan, Tim Maloney and Benedicte Rouland
Auckland University of Technology
Contact: rvaithia@aut.ac.nz

MAA2016-31 Child protection inequality: exploring the relationship with deprivation

The primary aim of this research is to develop a greater understanding of the relationship between deprivation and contact with the child protection system. This knowledge will have significant implications for policy, research and practice, for example to highlight to what extent addressing deprivation may have on reducing contact with the child protection system, to ascertain how resources to different communities should be allocated, and what risk factors for specific groups should be addressed. In particular this knowledge is needed to inform policies regarding the distribution of child protection resources for both statutory and NGO preventive services, as well as wider social policies that control the incomes and costs of poor households.

Gabrielle Davie, Rebbecca Lilley, Brandon de Graaf, David Barson and Emily Keddell
University of Otago
Contact: gabrielle.davie@otago.ac.nz

MAA2016-23 Vulnerable children investment approach

This project seeks to develop the actuarial valuation model and use this model to estimate the system wide forward liability.

Other questions associated with understanding New Zealand’s vulnerable children will also be considered. The types of questions that will also be asked include:

  • What characterises clients with higher forward liability?
  • What does vulnerable mean? What relationships exist between existing views of child vulnerability and the forward liability?
  • What are the life experiences of people that experienced vulnerability as children?
  • What indicators suggest poor childhoods?
  • What childhood indicators suggest poor life outcomes?
  • How do people that experienced vulnerability as children interact with other government services throughout their lives?

Craig Davis
Ministry of Social Development
Contact: craig.davis036@msd.govt.nz

MAA2016-12 Using birth information to predict reaching key early childhood development indicators: identifying at risk populations

This application will inform the Better Start National Science Challenge on risk factors associated with poor childhood outcomes (obesity, mental health, and poor literacy) with the purpose of improving targeted interventions.

This research will investigate the extent to which children at risk of these negative outcomes can be identified early using variables such as birth weight, parent’s relationship status and age, and ethnicity. These risk factors will, after being linked to the before school checks table, provide evidence to the Challenge that these variables identify children at risk of poor developmental outcomes.

Dr Rick Audas and Dr Barry Milne
University of Otago
Contact: rick.audas@otago.ac.nz 

MAA2016-09 The impact of exposure to violence: pilot investigation

The researchers are developing a survey to investigate the impact of violence and would like to investigate the potential usefulness of the IDI to supplement this survey with admin data.

Using admin data would allow researchers to plug the gaps in the survey responses and to devote more time to developing positive relationships with their subjects—something that would help with the survey process.

Pauline Gulliver, Janet Fanslow, Debbie Waayer and Cannis Tse
University of Auckland
Contact: p.gulliver@auckland.ac.nz

MAA2015-19 Modelling income and earnings dynamics

The request is part of a broader project to contrast individual and family longitudinal income and earnings in New Zealand with Australia and the United States. Initial work will use SoFIE data and for more recent information IDI/HLFS data is requested.

Dr David Maré, Correy Allan, Jaime Lancaster, and Oliver Robertson
Motu Economic and Public Policy Research
Contact: dean.hyslop@motu.org.nz

MAA2015-15 Marital separation in New Zealand – the financial consequences for parents

The project seeks to use Working For Families data in the IDI to undertake cohort-based analyses analysing outcomes for couples with children who separate in a given year. The initial analysis will focus on couples who were together in the 2006 tax year and separate in the 2007 tax year. Subsequent analyses will investigate other cohorts.

Michael Fletcher, Professor Ian Shirley, Professor Tim Maloney, and Dr Dave Maré
AUT University
Contact: michael.fletcher@aut.ac.nz 

MAA2015-13 Childhood poverty: precursors, persistence, prognosis, and policy

The project seeks to evaluate whether it is possible to use the Integrated Data Infrastructure (IDI) data to define childhood poverty. This involves defining households, determining households in poverty, and determining the children within those households.

This is part of a wider project to undertake a series of investigations looking at these questions:

  • Can children in poverty – and their families – be assessed using routine data available through the IDI?; and, assuming the answer to, (1) is yes;
  • Who becomes trapped in childhood poverty and why?
  • What is the duration of poverty experience for children, and how does the timing and persistence impact later health, education, employment, social, and justice outcomes?
  • What is the effect of lifting children from poverty?

Dr Barry Milne
University of Auckland
Contact: b.milne@auckland.ac.nz

MAA2013-06 Labour market monitoring/impacts of policy changes on sole parent labour force status

The Ministry of Social Development is using HLFS data to carry out research – largely descriptive data analysis – of the labour market 'as part of their role in supporting increased employment of benefit recipients'.

Lorna Bunt
Ministry of Social Development
Contact: lorna.bunt003@msd.govt.nz 

MAA2012-14 A retrospective, quasi-experimental study to evaluate the effect of the Family Start home visiting programme on children's health, safety and well-being, their preparedness for school, and maternal well-being

The Family Start (FS) programme is a $30m per annum government programme that involves FS workers making regular visits to the homes of high-risk expectant mothers and new-born babies and mothers. The aim is to improve outcomes in the domain of the child's health, safety, preparedness for school and well -being. Improvements in maternal well-being are also sought. This research project evaluates whether the children and mothers who have received these visits show improvements in targeted outcomes as measured by variables that are already held in administrative data systems.

Rhema Vaithianathan, Sarah Baird, Tim Maloney, Moira Wilson and Irene De Haan
Ministry of Social Development
Contact: rhema.vaithianathan@aut.ac.nz

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Health and safety

MAA2016-44 Long term outcomes for peri-viable births

Mothers who are at risk of delivery before 25 weeks gestation need to make an informed choice as to whether or not to initiate active resuscitation measures. Their primary worry is about their ability to cope with some of the potential long term outcomes. The decision to initiate full ICU intervention vs. newborn palliative care is complex and is influenced by local beliefs about the long-term health outcomes for these children. Current practice varies widely between institutions and there is a paucity of high-quality NZ data available to inform this decision-making.

To be able to bring some clarity to this difficult area of clinical practice, long-term follow up studies of large numbers of these very premature infants are needed. However, given the rarity of extremely premature infants, the costs of follow up and length of follow up required, a traditional prospective cohort study would be very difficult to carry out. Furthermore, where longer-term follow up has been done overseas (UK, Ireland, Norway and Sweden) the picture is variable. Additionally, these data cannot always be extrapolated to the New Zealand situation. We propose to use IDI microdata to follow the life course of infants born at under 25 weeks gestation as recorded in governmental datasets and make comparisons between these infants and those born at more advanced gestational age for a range of long term health, education and social outcomes.

Nevil Pierse and Tim Foster
University of Otago
Contact: nevil.pierse@otago.ac.nz

MAA2016-22 The Red Knot Study: Determining immunisation coverage and burden of vaccine preventable diseases among children of refugees and migrants in New Zealand

This project is investigating the immunisation rates and coverage of children who are either recent migrants or recently born children of new immigrants. As recent outbreaks of vaccine preventable diseases have shown, there are low rates of vaccination in some communities in NZ. The project will be used to develop a strategic action plan for further research work to improve identification and international responses to migrant child immunisation status, enabling better child health outcomes internationally.

Dr Janine Paynter
University of Auckland
Contact: j.paynter@auckland.ac.nz

MAA2016-21 The health impacts of playing Rugby

The project is primarily about quantifying the impacts on an individual’s health from playing Rugby at different levels of the game (professional, amateur, social, etc.). The impacts may include length and quality of life, changes in the age of onset and the rate of incidence of diseases particular to certain Rugby. The second focus is to illustrate the novel use of big data in the research of the health impacts of playing rugby.

Craig Wright, Ken Quarrie and Ian Murphy
New Zealand Rugby Union
Contact: cswright@xtra.co.nz 

MAA2016-16 Social, economic and cultural determinants in health care quality and patient safety in New Zealand

This project intends to use the opportunity to link patients’ socio-economic data to health data over time. It will allow the researchers to explore not only the influence on patient health status, and healthcare pathway experience of socio-economic determinants of health, but also the reverse effects of healthcare pathway experience and outcomes on socio-economic status

Nikolai Minko and Ying Li
Health Quality and Safety Commission
Contact: nikolai.minko@hqsc.govt.nz

MAA2016-11 VIEW-IDI: Vascular risk informatics using epidemiology & the web research programme within the IDI

The research programme VIEW (Vascular Risk, Informatics and Epidemiology – established 2000) is concentrating on developing tools to predict cardiovascular disease, assess risk of cardiovascular disease in all NZ adults and use the data gathered to develop quality improvement programmes to help reduce cardiovascular disease inequities in NZ. The IDI based research will be in three sub projects under this application:

  • replicating the VARIANZ 2006 cohort within the IDI. The Vascular Risk In Adult New Zealanders (VARIANZ) cohort will be used to develop cardiovascular disease risk prevention models that can be applied to the total adult NZ population.
  • use the IDI to create VARIANZ-SEP, an extension of VARIANZ that will add linked individual anonymised information from the 2013 Census, Inland Revenue, and MBIE to provide a comprehensive set of individual measures of socio-economic position (SEP)
  • investigation geographic variations in cardiovascular disease outcomes by using VARIANZ-IDI and VARIANZ-SEP to investigate the spatial and temporal variations in patterns of CVD risk and risk management in New Zealand.

Dr Daniel Exeter, Dr Jinfeng Zhao, Suneela Mehta, Dr Katrina Poppe, Billy Wu and Dr Sheree Gibb
University of Auckland
Contact: d.exeter@auckland.ac.nz

MAA2016-10 Environmental and occupational risk factors for chronic conditions

This research programme will make use of IDI data and will include the following projects:

  • Occupational and pharmaceutical risk factors for congenital malformations
  • Work-related risk factors for cardiovascular disease – a longitudinal study
  • Antibiotics and chronic conditions in childhood – a series of case-control studies

Assistant Professor Andrea‘t Mannetje, Dr Amanda Eng and Dr Sheree Gibb
Massey University
Contact: a.mannetje@massey.ac.nz

MAA2016-07 ACC – Long term claims analysis

The ACC researchers will be looking at using ACC and health data from the IDI to link treatment and injury information to look at the medical history of ACC clients. A growing trend has been identified that clients who have previously had an injury that required ACC support are returning for more treatment /support for the original injury some years later. ACC wish to investigate the reasons for this trend.

Huaning Yang, James Roscoe, James Dawson and Tahia Equab
Accident Compensation Corporation
Contact: huaning.yang@acc.co.nz

MAA2016-05 Health pathways and outcomes

This project represents a Ministry of Health-led programme of work, using the Integrated Data Infrastructure (IDI) to better understand the use, costs, and outcomes of health services and initiatives.

It will examine:

  • Health service use (or non-use) over time, the pathways that people take through the health system and other government services, and the outcomes they experience
  • The social and fiscal costs of long-term conditions resulting from the population being exposed to different health risks, social conditions, and environmental circumstances
  • The relationships between health risks, health initiatives and health outcomes, and social conditions and social outcomes over a lifetime.
  • The research will inform policy development and the design of health services, towards the Ministry of Health’s goal to improve the health and independence of all New Zealanders.

Steven Johnston, Matthew Cronin and Kendra Telfer
Ministry of Health
Contact: steven_johnston@moh.govt.nz

MAA2016-03 Segmentation towards enabling pathways

This project is looking to increase the level of understanding of investment of health and social resources into risk population groups and the potential positive outcomes of this work. The researchers have identified that currently MSD contains a profile of groups of people who receive a benefit of some kind. While research on these profiles have netted results, one major factor of the reason for these individuals being in the MSD profile, their health, is missing. The project will look at investigating adding health profiles to existing government datasets across a range of sectors.

Cameron Walker, Kevin Jia and Michael O'Sullivan
University of Auckland
Contact: michael.osullivan@auckland.ac.nz

MAA2015-53 BODE3 and HIRP-led VHIN research in the IDI

This application is to cover a programme of work with 3 initial projects. They are:

Project 1: What are the health system costs for CVD diagnoses?
Project 2: What is the impact of a CVD diagnosis on labour force status and income, and hence productivity and welfare benefit (sickness, unemployment, invalids) cost?
Project 3: What are the differential impacts of the Canterbury earthquakes on CVD health, by ethnicity, income, and home suburb at the time of the quakes?

Professor Tony Blakely, June Atkinson, Dr Andrea McDonald, Dr George Disney, Dr Nhung Nghiem, Dr Giorgi Kvizhinadze, Dr Cristina Cleghorn, Dr Naomi Brewer, Dr Sheree Gibb, and Dr Barry Milne
University of Otago, Wellington
Contact: tony.blakely@otago.ac.nz

MAA2015-48 Work-relatedness in national health data

This project will be assessing diseases that have work as a contributing factor and identifying cases of such work related diseases in the national health datasets. Combining the health data in the IDI with data from IR, Census and ACC. Researchers will be looking at expanding the demographic variables to give indications of the diseases sufferer’s work history.

Will Bell, Michelle Poland, Nick Matsas, and Kirsten Lovelock
WorkSafe New Zealand
Contact: nick.matsas@worksafe.govt.nz

MAA2015-44 Towards a new index of rurality for exploring variations in health outcomes in New Zealand

This research proposal is aiming to create an alternative rurality index to the one currently in use today. The work centres on developing a health-rurality index which measures access to health services and other basic amenities, the proportion of natural (ie green) space, population density and demographics at a small area level, making it possible to detect geographical variations that would be hidden in larger areas. Researchers wish to provide an important tool for urban/rural health and social research, which will better inform clinicians and health policy makers.

Dr Jinfeng Zhao, Dr Daniel Exeter, Dr Arier Lee, and Michael Browne
University of Auckland
Contact: jinfeng.zhao@auckland.ac.nz

MAA2015-42 Impact of the MeNZB™ vaccine on gonorrhoea

This research proposal is taking a look at the effectiveness of the New Zealand developed MeNZB vaccine as this is reasonably different to the two other, more commonly used vaccines available internationally. The research will use a retrospective cohort design and the IDI to obtain vaccine effectiveness and will also look to summarise the rates of hospitalisation of patients with gonorrhoea who have been vaccinated versus those who have not.

Dr Janine Paynter
University of Auckland
Contact: j.paynter@auckland.ac.nz

MAA2015-41 Modelling the cost effectiveness of changes to income tax on obesity prevention perspective in New Zealand

This research proposal is aiming to assess the probable impacts of changes to the individual income tax on the obesity prevalence in New Zealand. The researcher will take a sample of income tax interventions and model the impact of the changes using the Household Economic Survey data.

Dr Stefanie Vandevijvere
University of Auckland
Contact: s.vandevijvere@auckland.ac.nz

MAA2015-22 Delivering a new measure of neighbourhood disadvantage for New Zealand

The research is aiming to develop a contemporary measure of area-level disadvantage for NZ. It will aim to be comparable to international indices and will be using admin data from several agencies in the IDI. The measure will then be tested against a number of health outcomes and will also aim to be a resource for monitoring health and social determinants in NZ.

Dr Daniel Exeter, Dr Arier Lee, Michael Browne, and Valmai Copeland
University of Auckland
Contact: d.exeter@auckland.ac.nz

MAA2014-22 The impacts of cancer, chronic disease, and acute health events on future employment, earnings, and benefit receipt among the working-age population

This project will investigate the impacts of chronic diseases and acute health events on future employment, earnings, benefit receipt, among the working-age population. The immediate, short and longer-term impacts will be examined, for example absences from work around the time of the event or diagnosis, time until return to work, and whether individuals are employed or receiving benefits in medium to longer-term. This research will be the first in New Zealand that we are aware of that will look at the impact of specific conditions and acute health events on future employment and earnings in the population aged 18–64 years.

Robert Templeton, Sarah Crichton, Sylvia Dixon and Sarah Tumen
Analytics and Insights, The Treasury
Contact: robert.templeton@treasury.govt.nz

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Housing

MAA2016-45 Porirua City housing needs analysis

The project aims to investigate the current and projected level of housing need and outcomes within Porirua City with a focus on Titahi Bay and Porirua East relative to the wider Wellington Housing Market. Consequently the project will examine a combination of people and place related outcomes. Understanding the nature and composition of households in need and how this is likely to change over time will empower Porirua City Council with the knowledge they require to engage with Central Government agencies to develop interventions and policy to drive better outcomes.

Outputs from IDI data will provide location specific tables summarising outcomes by tenure and various demographic characteristics the locations included in the study include Titahi Bay (3 area units combined) and Porirua East (7 area units combined ). The goal will be to use the summarised data from the study areas demonstrating their people and households characteristics relative to community wide outcomes (Porirua City and the greater Wellington housing market).

NB: Housing need is defined as renter households paying more than 30% of their household income in housing cost or has specific needs beyond affordability which limits their ability to cope within the private rental market.

Ian Mitchell
Livingston and Associates
Contact: ian.mitchell@livingstonassociates.co.nz

MAA2016-41 Exploring existing IDI data to inform housing quality policy

There is concern around both housing affordability and quality in NZ. The tier one statistics 2012 paper indicates that, amongst others, an official statistic for both housing quality and affordability should be developed, with MBIE as the lead agency. The housing affordability measure is progressing, and this project aims to progress the housing quality measure by exploring and describing relevant IDI datasets. We will use our findings to inform housing quality policy.

The research question to be investigated is, how can existing housing data inform housing quality policy? The main outcome for this project is better informed policy decisions from improved evidence provided by analysis of existing housing quality data.

Chris Barnett, James Kerr and Dan Harvey
Ministry of Business, Innovation and Employment
Contact: chris.barnett@mbie.govt.nz

MAA2016-27 Social renting towards housing security and independence

The objective of the project is to increase the level of understanding and knowledge around the impact housing tenure has on the fiscal accounts of central government. Research will be identifying the level (incidence) of interaction with central government agencies people have, based on their housing tenure status.

Hugh Dixon, Konrad Hurren and Natalia Fareti
BERL Research Limited
Contact: hugh.dixon@berl.co.nz

MAA2016-14 Wellbeing valuation of social housing provision

The research project aims to use the microdata to help Housing New Zealand investigate the social wellbeing generated by the services that HNZ provides. The project will use a 'wellbeing valuation' technique for this investigation and will aim to shape development and investment directions for community social housing projects to enable HNZ to maximise social value generation. the project will also create a social value rating that will be used for potential future projects to enable comparison between works.

Caitlin Davies and Alicia Taylor
Housing New Zealand Corporation
Contact: alicia.taylor@hnzc.co.nz

MAA2016-06 The New Zealand rental sector: Who rents what, where and from whom?

This project is a three part investigation of the New Zealand rental sector. Part 1 is a report on the characteristics of New Zealand tenants by age, sex, ethnicity, income and household type. Part 2 looks to identify the various types of homes being provided to renters. The Last section will concentrate on investigating on the value to the New Zealand rental market of different categories of landlord. The aim of the entire project is to fill the gaps in the current knowledge of the NZ rental sector.

Dr Lucy Telfar Barnard
Ministry of Business, Innovation & Employment
Contact: lucy.telfar-barnard@otago.ac.nz

MAA2014-10 Measuring housing affordability in New Zealand as a Tier One statistic

This research explores the feasibility to produce a Tier One housing affordability measure by utilising relevant data in the IDI and HLFS, namely, household income, household rents, house sales prices and household demographic profile to form a subset of panel data.

James Kerr and Julie Loke
Ministry of Business Innovation and Employment
Contact: james.kerr@mbie.govt.nz

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Justice

MAA2015-36 Investment approach to justice

The project aims to: 

  • develop statistical models to predict future involvement in crime
  • develop a segmentation model based on risk of future involvement in crime
  • develop rich profiles of these segments using broader social data
  • evaluate the effectiveness of crime prevention investments, including any effect on broader social outcomes

Charles Sullivan, Lynley Povey, Jo Fink, Rob Lynn, Natalie Horspool, Su-Wuen Ong, Tim Hughes, Stephen Christie, and Wayne Goodall
Ministry of Justice and Department of Corrections
Contact: tim.hughes@justice.govt.nz

MAA2015-26 Family and individual life-course research of victims, perpetrators and their families

The research focuses on how the burden and risk of victimisation and perpetration of all crime, and specifically family violence, is driven for known victims and offenders, and their families, in New Zealand.

Craig Wright and Jason Timmins
SUPERU
Contact: craig.wright@superu.govt.nz

MAA2013-21 Victim demographics and overlaps with offenders

This research uses the IDI to improve our understanding of victim demographics and look at the relationship between victimisation and offending.

Simon Brown, Suzanne Jones, Jo Fink, and Charles Sullivan
Ministry of Justice
Contact: simon.brown@justice.govt.nz

MAA2013-11 Associations between justice sector outcomes and other indicators

The research proposal uses Ministry of Justice and Department of Corrections data that is being linked into the Integrated Data Infrastructure (IDI) for the first time to build a socio-economic profile of people facing criminal charges. Using the IDI, the applicants believe a much richer profile can be built than is currently available.

Simon Brown
Ministry of Justice
Contact: simon.brown@justice.govt.nz 

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Travel and migration

MAA2016-38 The effect of immigration on New Zealand

The research project is looking at the factors that distinguish criminal offending by migrants in New Zealand. It is a part of a wider project to look at the effects of immigration on New Zealand, specifically the effects on labour markets, the housing market, productivity and other, broader social effects. The research will aim to put the question of migrant criminal offending into perspective. The results of this project will be presented for use in policy making to either help screen potential offenders, or to help prove the current system is working.

Eric Crampton and Rachel Webb
The New Zealand Initiative 
Contact: rachel.webb@nzinitiative.org.nz

MAA2015-30 Using microdata to estimate external migration at the subnational level

This project is a University of Waikato Summer Research Scholarship project co-funded by the University of Waikato and Statistics New Zealand.

Statistics NZ population estimates and projections at the subnational level require estimates of external migration for area units and Auckland local boards. Arrival and departure cards currently provide good data on migration at the territorial authority level, but not at geographical levels below this. There is therefore great interest in investigating sources of data containing more geographical detail.

Dr Michael Cameron and Dr Matthew Roskruge
The University of Waikato
Contact: mcam@waikato.ac.nz

MAA2012-15 IDI Migration Research Programme

MBIE’s IDI Migration research work programme will involve establishing monitoring and reporting processes, undertaking research into migrants’ participation in and impact on the labour market, and policy-focused monitoring and evaluation. Some projects will focus on specific groups of interest including permanent residents, international students, and temporary workers, or migrants granted visas under specific immigration policies.

Keith McLeod
Ministry of Business, Innovation and Employment
Contact: keith.mcleod@mbie.govt.nz

MAA2011-04 The effect of immigration on the labour market

This research provides new insights into the impact of immigration on the New Zealand labour market. This includes identifying the extent to which different population groups, industries, and/or regions are affected by immigration. In particular, it provides information on:

  • the location and industry of employment for migrants and the wider population 
  • trends over time for different migrant cohorts 
  • estimated impacts of immigration on the New Zealand labour market.

Keith McLeod
Ministry of Business, Innovation, and Employment (Migration Research, Evaluation, and Analysis)
Contact: keith.mcleod@mbie.govt.nz

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Updated 30 November 2016

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