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Our people

Associate Professor Emma Wyeth

Kāi Tahu, Te Ātiawa, Ngāti Tama, Ngāti Mutunga

Director, Ngāi Tahu Māori Health Research Unit; Associate Professor (Māori Health)
BSc(Hons) PhD

Emma website photo I am the unit director, as well as an Associate Professor within the Department of Preventive and Social Medicine. I was also the Co-Deputy Director of Ngā Pae o te Māramatanga, New Zealand’s Māori Centre of Research Excellence (CoRE) from 2016-2018. I have a background in Māori medical genetics and have worked in the department for over 12 years. During this time, the majority of my research has focused on injury and disability outcomes for Māori, as a Co-Investigator and Principal Investigator on a number of injury and disability research projects. I am committed to understanding and improving Māori health outcomes, particularly within the Ngāi Tahu takiwā and Southern New Zealand.

Tel +64 3 479 4064

Sarah Colhoun

Assistant Research Fellow (Māori Health)

Sarah Colhoun imageI have been working in public health and social research for around 10 years, in both academic research roles and as an analyst. I love what I do – working in areas that have the real potential to make a positive difference in people’s lives. I am especially interested in research that contributes to reducing inequities across various population groups in New Zealand, including Māori. I am also very interested in evaluation, in terms of looking at what is done, how it is done and how it can be done better; and in research that explores people’s relationship to the natural environment.

In my spare time, I enjoy getting into the outdoors, playing tennis and indulging my musical and literary interests.


Professor Sue Crengle

Kāi Tahu, Kāti Māmoe, Waitaha

Associate Professor (Māori Health)

Sue Crengle imageI am a doctor who is a specialist in general practice and public health medicine and I have been working as a researcher for over 25 years. My research interests include inequities in health, health services research, quality of care, and child and youth health. Much of my work involves identifying where and how inequities in our health occur, and in testing ways to eliminatethese inequities. I’m an active member of my Rūnaka and in my spare time I like to exercise—I’m a CrossFit person at the moment!

Tel +64 3 479 4258

Professor Sarah Derrett



Sarah Derrett 2021 imageI teach public policy, health systems, and qualitative research methods at Otago. My research interests are focused on people’s health and disability outcomes, policy, service integration, public engagement and equity. I am particularly interested in ways to address systemic and structural barriers to equitable health outcomes. Currently, I am principal investigator of two large injury outcome studies – and a co-investigator on other projects focused on understanding outcomes for Māori.

I nursed in mental health before coming to the university. I sit on the boards of Koputai Lodge (a mental health residential facility) and Bowel Cancer New Zealand, and enjoy tatting, gardening and biking around the Port Chalmers (Kōpūtai) area with my husband (Brian).

Tel +64 3 479 7221
Mob +64 21 113 4832

Ms Michelle Lambert

Ngāti Kahungunu

Research Fellow (Māori Health)
BCom DipGradPsyc PgDipClinHealthPsyc MSc(Hons)

Michelle website photoI am a Research Fellow in the Ngāi Tahu Māori Health Research Unit and work closely with our team of researchers on a variety of health research projects. I have extensive experience in quantitative and qualitative data assessment, as well as design and implementation of interventions, my goal is to improve health outcomes for Māori. My research focus in the unit has been on health services improvement research with the aim of reducing the long-standing health inequalities of our people. My main areas of research interest are:

  • Health services improvement and intervention development using a kaupapa Māori framework
  • Qualitative studies to help improve primary care, injury rehabilitation and other health services for Māori patients

I love what I do and want to make a difference in people's lives by finding better ways to do things for our people.

Tel +64 3 479 6107

Dr Brett Maclennan

Taranaki (Ngā Mahanga)

Research Fellow

Brett Maclennan imageI am a Research Fellow in the Unit and have been involved in various research projects during my 15 years in the Department of Preventive and Social Medicine. These have included investigating alcohol policy development, evaluations of alcohol policy on drinking and related-harm, investigating Māori injury and disability outcomes, and estimating the prevalence of, and trends in, work-related fatal injury. My specific research interests include community involvement in the development of health policy, evaluation of health policies and interventions, and understanding ways of improving Māori health outcomes.

Outside of work I enjoy spending time with my whānau, developing our garden, coaching and watching cricket, and, occasionally, running.


Dr Karyn Maclennan

Taranaki (Ngā Mahanga)

Research Fellow
BSc MSc PhDResearch Fellow

Karyn Maclennan imageI have a background in pharmacology and psychology and have worked broadly across pharmaceutical medicine, including research, teaching, communication and regulation in New Zealand and the UK. I have a strong interest in public outreach and communication about medicines, and in partnering with community groups to collaborate on locally relevant research projects. I am a member of the Pharmacoepidemiology Research Network Core Academic Group, with research interests relating to the optimal use of medicines, safe disposal of antibiotics, quality of care, and health inequities. I am passionate about demystifying medicines and empowering people and their whānau to have confident discussions and to make informed, shared and positive decisions about their health and well-being.


Miss Georgia McCarty

Waikato - Tainui

Assistant Research Fellow (Māori Health)

Georgia McCarty

Tēnā koutou katoa, he uri ahau nō te waka o Tainui. I am an Assistant Research Fellow. I am passionate about positive conceptions of Māori health and mauri ora (flourishing), specifically, I am interested in how we measure Māori health and wellbeing for our rangatahi Māori (Māori youth). My broad research interests include: rangatahi hauora Māori (Māori youth health); incarceration and the subsequent health of whānau; strengthening Māori identity and culture; and ethnicity data collection and ethnicity discrimination in our health care systems. 

Outside of work, I play hockey, do the occasional half-marathon, am a member of of Te Taurahere o Tainui ki Ōtepoti (Tainui whānau living in Dunedin) and spend time with my whānau in Te Ika-a-Maui.


Miss Vicky Nelson

Te Ātiawa (Taranaki), Ngāti Ruanui

Assistant Research Fellow (Māori Health)
BSc PgDipSci PgDipPH(Hons) MSc(Hons)

Vicky website photo

I have a background in science, particularly in neuroscience and immunology. After completing my PgDipPH, my passion grew for bridging science and public health, and to use this platform to work with Māori to improve health and health outcomes for Māori.

My research interests include:

  • Māori youth health, and in particular mental health and neuro-disabilities
  • Māori injury and disability outcomes
  • Health service access for Māori
  • To continue to build kauapapa Maori research strategies within the science and public health sector.

Outside of work I spend my time keeping active with my whānau, which includes my partner, our toddler son, and two Siberian huskies.

Tel +64 3 479 5370

Dr Helen Owen

Assistant Research Fellow

Helen wwebsite photo NTMHRU

I am an Assistant Research Fellow, working as the project manager of the Māori Prospective Outcomes of Injury Study and the NZ Prospective Older Adult Transport and Health Study. My background is in social and educational psychology (PhD), but I have since undertaken research on health providers’ care integration and teamwork, older adults’ mobility and transport use, and health, disability and wellbeing outcomes following injury. I feel proud to be contributing to research that aims to improve health care delivery and reduce health inequalities for Māori.

Tel 021 279 0101

Dr Robin Quigg


Lecturer (Māori Health)
BPRMgmt, MAppSci, PhD

Robin website photo NTMHRU

I have broad and varied research interests, reflecting my prior work within University governance and administration, local and central governments. I am particularly interested in the spatio-temporal research, using smart devices (accelerometer and GPS data), spatial analysis and geographic context to better understand health-related behaviours such as physical activity, nutrition choices and tobacco use, and their relationship to educational outcomes and well-being. While children have been the focus of much of my published work to date, I am also involved in studies working with adolescent, adult and Māori communities.

When not at work, I can be found supporting my now adult children playing hockey and/or football, riding my bike, either to work from the Otago Peninsula or on mtb tracks with husband John, or occasionally tramping and telemark skiing.

Tel +64 3 479 9041

Andrew Sise


Andrew Sise imageI am a Public Health Medicine Registrar working within the Unit. I originally trained as a clinical doctor and was on my way to becoming a General Practitioner before I decided to transition to a career in Public Health.

I am currently completing a one-year placement with Prof. Sue Crengle, during which time we will be working as part of an international team researching indigenous adolescent health. I am also involved in medical student teaching, and am interested in utilising administrative data for epidemiological research and health system monitoring.

Outside of work I enjoy getting into the outdoors, and spending time with my wife Georgie and daughter Lucy.


Emeritus Professor John Broughton

Kāi Tahu, Ngāti Kahungunu

John Broughton

Associate Dean (Māori), Faculty of Dentistry
CNZM ED JP BSc(Massey) BDS PhD PGDipComDent DipGrad(Otago)

I helped establish the NTMHRU in the 1990s and was its inaugural. I currently have a joint appointment in the Department of Preventive and Social Medicine, working with the NTMHRU, (I convene PUBH741 Hauora Māori: Policy Practice and Research in Dunedin) and the Faculty of Dentistry (I convene DENT553 The Dentist and Community 4, which is concerned with the final year dental student Community Service Learning placement with Māori and Pacific oral health providers). I have extensive experience in oranga niho – Māori oral health.

I am also a famous playwright! Plays include: ANZAC, Te Hokinga Mai – The Return Home, Ngā Puke – The Hills, 1981, A Day At The Races, and the Show Band Aotearoa Libretto. (Music by Rim D Paul).

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Postgraduate students

PhD Students

Georgia McCarty

Research project: Hauora Rangatahi Māori: Assessing the appropriateness and acceptability of health-related quality of life measures for rangatahi Māori
Supervisors: Associate Professor Emma Wyeth, Dr Trudy Sullivan, Professor Sarah Derrett and Associate Professor Sue Crengle

Gabrielle McDonald
Research project: A different kind of evidence: a health intervention study implemented in a legal setting.
Supervisors: Professor Peter Crampton, Professor Sue Crengle

Vicky Nelson
Research project: Tihei Mauri Ora! An Exploration of Māori Flourishing After Injury
Supervisors: Associate Professor Emma Wyeth,
Professor Sarah Derrett and Dr Ari Samaranayaka

Master's Students

Shawnee Brausch

Research project: To explore the stories of young Māori wāhine (women) and their relationships with alcohol
Supervisors: Associate Professor Emma Wyeth and Dr Richard Egan

Sam Carrington

Research project: To investigate, using a One Health approach, Māori understandings of antimicrobial resistance in Aotearoa New Zealand
Supervisors: Associate Professor Emma Wyeth, Professor Pauline Norris and Professor Patricia Priest

Summer Students 


Hazel Gilbert
Research project: It is The Last Straw! Determining relevant social determinants of health to play the game in Aotearoa
Supervisors: Dr Robin Quigg

Robbie Manning
Research project: Assessing the prevalence of burnout in mental healthcare staff employed by the Southern District Health Board
Supervisors: Professor Sarah Derrett, Associate Professor Emma Wyeth

Past Students

Colette Parai
Research project: Staff, Parent and Whānau perspectives of the Neonatal Intensive Care Unit’s Family Integrated Care Programme
Supervisors: Professor Sarah Derrett, Dr Helen Harcombe and Associate Professor Emma Wyeth

Warinthon Baker

Research project: Health and disability outcomes and health service experiences: A prospective study of injured migrants and non-migrants in New Zealand
Supervisors: Professor Sarah Derrett, Dr Ari Samaranayaka and Associate Professor Emma Wyeth

Elizabeth Peterson

Research project: Health-related quality of life and disability outcomes for older people with chronic kidney disease
Supervisors: Professor Sarah Derrett, Associate Professor Emma Wyeth, Dr Ari Samaranayaka and Professor Rob Walker