My Research

Research Projects

Reducing the burden of osteoarthritis in Aotearoa New Zealand (2022–2027)

Our research centre was awarded an HRC Programme grant to investigate optimal ways to improve the management of osteoarthritis in NZ. This research programme involves a randomised clinical trial of a novel lifestyle intervention consisting of exercise therapy, dietary change, and self-management education, for people with osteoarthritis and multimorbidity; epidemiological and health economic research on the impacts of osteoarthritis prevention and management strategies, and health economic simulation modelling to evaluate the effectiveness and cost-effectiveness of novel treatment pathways and models of care for osteoarthritis in the New Zealand healthcare system. I am leading the simulation modelling project within this research programme. For more information on this programme, please see the CMOR website.

Measuring the health state preferences of New Zealanders (2022–2026)

I was awarded a project grant from the Health Research Council of New Zealand to investigate the validity of the SF-6D health state utility instrument in the New Zealand population, to derive a NZ population value set for the SF-6D, and to develop tools to support the use of the instrument for population health and equity monitoring and cost-effectiveness evaluation of healthcare in the NZ health system. At present the SF-6D, and the SF-12 health status questionnaire from which it is derived, is widely used in clinical practice, population health monitoring, and health research in NZ, without evidence of its validity for this population or the availability of a utility value set based on preferences elicited from the NZ population. This mixed methods project will combine qualitative kaupapa Māori research methods to evaluate the appropriateness of the SF-6D for the NZ, and especially Māori, population; instrument development if required to refine the SF-6D to meet the needs of the NZ population and healthcare system; and cutting-edge discrete choice experiment (DCE) survey methods to develop a value set reflecting the preferences of the NZ population for the trade-offs between health-related quality of life domains inherent in healthcare prioritisation and funding decisions.

Chronic opioid use before and after joint replacement surgery (2018–ongoing)

I have received grants from the Otago Medical Research Foundation and the H.S and J.C Anderson Charitable Trust for studies of the prevalence, risk factors, and consequences of chronic opioid use before and after total hip and knee replacement surgery, using linked national population data from the IDI. Several outputs from this project are now available:

We showed, using a comprehensive dataset including all joint replacement surgeries performed in the NZ public healthcare system, the continued prevalence of opioid use for as long as three years after surgery. This work has been published in the New Zealand Medical Journal and presented to the NZ Orthopaedic Association Annual Scientific Meeting.
A second paper from this project identifies several important risk factors that can to help identify patients at high risk of such prolonged post-surgical opioid use, which could be useful in identifying targeted interventions to reduce opioid exposure for these at-risk groups. This paper has been published in the Journal of Arthroplasty.
A third study investigates the long-term health, economic, and social impacts of perioperative opioid prescribing, and shows substantial increases in healthcare use and costs associated with preoperative opioid prescribing, but little evidence of any negative impacts of postoperative opioid prescribing to support short-term surgical recovery. This study has been published in Family Practice.
A further study looking at the dose-response relationship between preoperative opioid use and long-term outcomes is in progress. An analysis plan is freely available on the Open Science Framework, and a preliminary report will be published shortly.

The health economic case for implementing ACL injury prevention interventions (2020–ongoing)

I am part of a project, led by Dr Yana Pryymachenko, that has received preliminary funding from the Health Research Council of New Zealand to investigate the impact of ACL injury prevention programmes on long-term outcomes, including the incidence and associated health and economic burden of early knee osteoarthritis. This preliminary project involves investigating the feasibility of using matching methods to identify comparable groups of individuals with and without the occurrence of an ACL injury, using comprehensive linked national data from the IDI, and to use these matched cohorts to evaluate long-term outcomes following an ACL injury. If this feasibility study proves successful, we intend to use this approach to inform cost-effectiveness evaluations of injury prevention strategies to support the implementation and uptake of such programmes across the New Zealand population (for example, via schools, sports clubs, and workplaces where people are at risk of ACL injury).

Previous research projects

Trends in population BMI in New Zealand (2017)

This study analysed the increasing trends seen in population BMI in New Zealand over recent decades, using an Age-Period-Cohort (APC) analysis, and provides medium-term predictions of mean BMI and obesity prevalence for the next 20 years. APC analysis is a statistical methodology, widely used in disease epidemiology as well as the social sciences, for decomposing longitudinal trends in outcomes such as disease prevalence into the contributions of life-course changes (age effects), generational replacement (cohort effects), and secular time trends (period effects). In the case of BMI trends in New Zealand, we found that almost all of the observed and predicted increase in BMI was due to secular period trends, reflecting the effects of the increasingly obesogenic environment in which we live (such as the increasing availability of low-nutrient, high-energy ‘junk foods’, and reduced levels of physical activity due to sedentary occupations and passive leisure activities). A journal article reporting on these findings has been published in the Australian and New Zealand Journal of Public Health.

Computer simulation modelling for osteoarthritis in New Zealand (2015–2020)

This work was part of a project, led by Prof. Haxby Abbott at the Centre for Musculoskeletal Outcomes Research, to develop and evaluate a novel, early, coordinated programme of care for osteoarthritis in the New Zealand healthcare system. For this programme, I have led the development of a new microsimulation model of the population health impacts, healthcare costs, and treatment outcomes of osteoarthritis in New Zealand, which will be used for evaluating the cost-effectiveness of the proposed programme of care. A journal article reporting on the model development and validation was published in Osteoarthritis and Cartilage, a study applying the model to provide projections of the future burden of osteoarthritis to the NZ health system and society has been published in the New Zealand Medical Journal, and an application of the model to cost-effectiveness analysis of interventions for the management of osteoarthritis in the NZ population has recently been published in Osteoarthritis and Cartilage Open as well as being presented at several conferences (including the OARSI World Congress, ISPOR European Congress, SMDM Annual Meeting, NZ Orthopaedic Association Annual Scientific Meeting, and Australian Physiotherapy Conference).

The health impact of osteoarthritis: health-loss burden and cross-instrument mapping (2017–2019)

This project, which was funded by a Jack Thomson Arthritis Grant from the Otago Medical Research Foundation, includes two studies looking at the evaluation of the health-related quality of life impacts associated with osteoarthritis. The first study provides estimates of the health utility losses across multiple dimensions of health associated with radiographic knee osteoarthritis. To evaluate the cost-effectiveness of disease prevention strategies for osteoarthritis requires such estimates; this was the first study worldwide to provide these for radiographic knee osteoarthritis. An article reporting on this study has been published in Rheumatology.

The second study provides a tool to map from a generic quality of life measure (the SF-12) to health utility values in populations with osteoarthritis. The SF-12 is widely used in outcomes research in osteoarthritis, but the outcome measures commonly reported do not provide the utility values needed for cost-effectiveness analysis. This mapping will therefore greatly increase the range of studies available to inform economic analyses. A journal article reporting on this study is currently being finalised.

The primary care management and impact of osteoarthritis (2018–2021)

I was part of a team awarded a Health Research Council project grant to investigate the prevalence, management pathways, and health and economic impacts of hip and knee osteoarthritis in primary care in New Zealand. Most osteoarthritis care and management, in New Zealand and elsewhere, is delivered in primary care, but very little is known, at a systematic level, about how many patients present to primary care with osteoarthritis symptoms, what treatments they are offered, and how much it costs both the health system and patients themselves. This project combined novel large-scale data extraction from primary care patient records with the wealth of data on secondary care utilization, pharmaceutical prescriptions, and wider economic and social indicators available from the Statistics New Zealand Integrated Data Infrastructure (IDI), to address these important questions. Final research papers on the health and economics impacts of osteoarthritis diagnosed and managed in primary care in NZ are now being completed for publication.

Total joint replacement and non-operative management for late-stage hip and knee osteoarthritis

I have been involved in several studies using data from patients undergoing total joint replacement or non-operative management for late-stage hip and knee osteoarthritis at Dunedin Public Hospital, investigating the outcomes of each of these management pathways and the optimal selection of patients for surgery. These studies have included evaluations of the ‘Joint Clinic’, a multidisciplinary chronic disease management pathway designed to improve access to joint replacement surgery for patients with hip and knee osteoarthritis by providing optimal non-operative management for patients with lower need for immediate surgery, with two articles published in the Journal of Arthroplasty; evaluation of the relationship between preoperative health status and postoperative improvement to help inform rationing decisions, published in Arthroplasty Today; and cost-effectiveness analysis of total joint replacement surgery based on preoperative patient characteristics and duration of follow-up, with a manuscript forthcoming in the Journal of Arthroplasty.

Publications and Outputs

Journal articles

Pryymachenko Y, Wilson R, Dalbeth N, Abbott JH, Stamp L. Cost-effectiveness of low dose colchicine prophylaxis when starting allopurinol using the “start-low go-slow” approach for gout: evidence from a non-inferiority randomised double-blind placebo-controlled trial. Arthritis Care & Research 2025;In press. doi:10.1002/acr.25631	0
Pryymachenko Y, Wilson R, Abbott JH, Dowsey M, Choong P. The long-term impacts of opioid use before and after joint arthroplasty: matched cohort analysis of New Zealand linked register data. Family Practice 2024;41(6):916–924. doi:10.1093/fampra/cmad112	0
Reynolds A, Hood F, Wilson R, Ross A, Neumann S, Turner R, Iosua E, Katare R, Shahin A, Kok Z-Y, Chan H, Coffey S, Mann J. Protocol for a three-arm randomised controlled trial of healthy grocery delivery in the usual care for adults recovering from an acute coronary event. BMJ Open 2023;13:e074278. doi:10.1136/bmjopen-2023-074278	1
Bühler M, Gwynne-Jones D, Chin M, Woodside J, Gough J, Wilson R, Abbott JH. Are the outcomes of relative motion extension orthoses non-inferior and cost-effective compared with dynamic extension orthoses for management of zones V-VI finger extensor tendon repairs: A randomized controlled trial. Journal of Hand Therapy 2023;36(2):363–377. doi:10.1016/j.jht.2023.02.010	3
Abdel-Shaheed C, Mathieson S, Wilson R, Furmage A-M, Maher C. Who should judge treatment effects as unimportant?. Journal of Physiotherapy 2023;69(3):133–135. doi:10.1016/j.jphys.2023.04.001	26
Darlow B, Brown M, Stanley J, Abbott H, Briggs A, Clark J, Frew G, Grainger R, Hood F, Hudson B, Keenan R, Marra C, McKinlay E, Pask A, Pierobon A, Simmonds S, Vincent L, Dean S. Reducing the burden of knee osteoarthritis through community pharmacy: protocol for a randomised controlled trial of the Knee Care for Arthritis through Pharmacy Service (KneeCAPS). Musculoskeletal Care 2023;21(4):1053–1067. doi:10.1002/msc.1785	5
Pryymachenko Y, Wilson R, Abbott JH. Epidemiology of cruciate ligament injuries in New Zealand: exploring differences by ethnicity and socioeconomic status. Injury prevention 2023;29:213–218. doi:10.1136/ip-2022-044761	3
Sharma S, Wilson R, Pryymachenko Y, Pathak A, Chua J, Gwynne-Jones D, Bennell KL, Metcalf B, Hinman RS, Lim B-W, Abbott JH. Reliability, validity, responsiveness, and minimum important change of the Stair Climb Test in adults with hip and knee osteoarthritis. Arthritis Care & Research 2023;75(5):1147–1157. doi:10.1002/acr.24821	16
Wilson R, Pryymachenko Y, Abbott JH, Dean S, Stanley J, Garrett S, Mathieson F, Dowell A, Darlow B. A Guideline-Implementation Intervention to Improve the Management of Low Back Pain in Primary Care: A Difference-in-Difference-in-Differences Analysis. Applied Health Economics and Health Policy 2023;21:253–262. doi:10.1007/s40258-022-00776-3	5
Wilson R, Abbott JH, Mellor R, Grimaldi A, Bennell K, Vicenzino B. Education plus exercise for persistent gluteal tendinopathy improves quality of life and is cost-effective compared to corticosteroid injection and wait and see: Economic evaluation of a randomised trial. Journal of Physiotherapy 2023;69(1):35–41. doi:10.1016/j.jphys.2022.11.007	7
Abbott JH, Wilson R, Pryymachenko Y, Sharma S, Pathak A, Chua JYY. Economic evaluation: a reader’s guide to studies of cost-effectiveness. Archives of Physiotherapy 2022;12:28. doi:10.1186/s40945-022-00154-1	23
Ribeiro DC, Tangrood ZJ, Wilson R, Sole G, Abbott JH. Tailored exercise and manual therapy versus standardised exercise for patients with shoulder subacromial pain: a feasibility randomised controlled trial (the Otago MASTER trial). BMJ Open 2022;12:e053572. doi:10.1136/bmjopen-2021-053572	9
Pathak A, Wilson R, Sharma S, Pryymachenko Y, Ribeiro DC, Chua J, Abbott JH. Measurement properties of the Patient-Specific Functional Scale and its current uses: An updated systematic review of 57 studies using COSMIN guidelines. Journal of Orthopaedic & Sports Physical Therapy 2022;52(5):262–275. doi:10.2519/jospt.2022.10727	35
Wilson R, Chua J, Pryymachenko Y, Pathak A, Sharma S, Abbott JH. Prioritizing Healthcare Interventions: A Comparison of Multicriteria Decision Analysis and Cost-Effectiveness Analysis. Value in Health 2022;25(2):268–275. doi:10.1016/j.jval.2021.08.008	4
Pryymachenko Y, Wilson R, Sharma S, Pathak A, Abbott JH. Are manual therapy or booster sessions worthwhile in addition to exercise therapy for knee osteoarthritis: Economic evaluation and 2-year follow-up of a randomized controlled trial. Musculoskeletal Science and Practice 2021;56:102439. doi:10.1016/j.msksp.2021.102439	8
Wilson RA, Gwynne-Jones DP, Sullivan TA, Abbott JH. Total hip and knee arthroplasty are highly cost-effective procedures: The importance of duration of follow-up. Journal of Arthroplasty 2021;36(6):1864–1872.e10. doi:10.1016/j.arth.2021.01.038	19
Coombs DM, Machado GC, Richards B, Wilson R, Chan J, Storey H, Maher CG. Healthcare costs due to low back pain in the emergency department and inpatient setting in Sydney, Australia. Lancet Regional Health - Western Pacific 2021;75:100089. doi:10.1016/j.lanwpc.2020.100089	57
Wilson R, Chua J, Briggs AM, Abbott JH. The cost-effectiveness of recommended adjunctive interventions for knee osteoarthritis: Results from a computer simulation model. Osteoarthritis and Cartilage Open 2020;2(4):100123. doi:10.1016/j.ocarto.2020.100123	9
Chua J, Hansen P, Briggs AM, Wilson R, Gwynne-Jones D, Abbott JH. Stakeholders’ preferences for osteoarthritis interventions in health services: A cross-sectional study using multi-criteria decision analysis. Osteoarthritis and Cartilage Open 2020;2(4):100110. doi:10.1016/j.ocarto.2020.100110	4
Pryymachenko Y, Wilson RA, Abbott JH, Dowsey MM, Choong PFM. Risk Factors for Chronic Opioid Use Following Hip and Knee Arthroplasty: Evidence from New Zealand Population Data. Journal of Arthroplasty 2020;35(11):3099–3107.e14. doi:10.1016/j.arth.2020.06.040	22
Gwynne-Jones DP, Gwynne-Jones JH, Wilson RA. Response to Letter to the Editor on “The Functional Outcomes of Patients With Knee Osteoarthritis Managed Nonoperatively at the Joint Clinic at 5-Year Follow-Up: Does Surgical Avoidance Mean Success?”. Journal of Arthroplasty 2020;35(10):3060–3061. doi:10.1016/j.arth.2020.05.054	0
Gwynne-Jones DP, Sullivan T, Wilson R, Abbott JH. The Relationship Between Preoperative Oxford Hip and Knee Score and Change in Health-Related Quality of Life After Total Hip and Total Knee Arthroplasty: Can It Help Inform Rationing Decisions?. Arthroplasty Today 2020;6(3):585–589.e1. doi:10.1016/j.artd.2020.04.009	26
Gwynne-Jones DP, Gwynne-Jones JH, Wilson RA. The Functional Outcomes of Patients With Knee Osteoarthritis Managed Nonoperatively at the Joint Clinic at 5-Year Follow-Up: Does Surgical Avoidance Mean Success?. Journal of Arthroplasty 2020;35(9):2350–2356.e1. doi:10.1016/j.arth.2020.04.087	13
Shadbolt C, Shilling S, Inacio MC, Abbott JH, Pryymachenko Y, Wilson R, Choong PFM, Dowsey MM. Opioid Use and Total Joint Replacement. Current Rheumatology Reports 2020;22:58. doi:10.1007/s11926-020-00929-0	15
Gwynne-Jones DP, Wilson R, McEwan C. National Referral Prioritization tool for first specialist assessment: results of a pilot study in orthopaedic surgery. ANZ Journal of Surgery 2020;90(9):1738–1742. doi:10.1111/ans.16002	1
Gwynne-Jones JH, Wilson RA, Wong JMY, Abbott JH, Gwynne-Jones DP. The Outcomes of Nonoperative Management of Patients With Hip and Knee Osteoarthritis Triaged to a Physiotherapy-Led Clinic at Minimum 5-Year Follow-Up and Factors Associated With Progression to Surgery. Journal of Arthroplasty 2020;35(6):1497–1503. doi:10.1016/j.arth.2020.01.086	25
Abbott JH, Wilson R. The projected burden of knee osteoarthritis in New Zealand: healthcare expenditure and total joint replacement provision—a response. New Zealand Medical Journal 2020;133(1509):77–78.
Wilson R, Pryymachenko Y, Audas R, Abbott JH. Long-term opioid medication use before and after joint replacement surgery in New Zealand. New Zealand Medical Journal 2019;132(1507):33–47.
Wilson R, Abbott JH. The projected burden of knee osteoarthritis in New Zealand: healthcare expenditure and total joint replacement provision. New Zealand Medical Journal 2019;132(1503):53–65.
Darlow B, Stanley J, Dean S, Abbott JH, Garrett S, Wilson R, Mathieson F, Dowell A. The Fear Reduction Exercised Early (FREE) approach to management of low back pain in general practice: A pragmatic cluster-randomised controlled trial. PLOS Medicine 2019;16(9):e1002897. doi:10.1371/journal.pmed.1002897	33
Abbott JH, Wilson R, Pinto D, Chapple CM, Wright AA. Incremental clinical effectiveness and cost effectiveness of providing supervised physiotherapy in addition to usual medical care in patients with osteoarthritis of the hip or knee: 2-year results of the MOA randomised controlled trial. Osteoarthritis and Cartilage 2019;27(3):424–434. doi:10.1016/j.joca.2018.12.004	55
Wilson R, Abbott JH. Age, period and cohort effects on body mass index in New Zealand, 1997-2038. Australian and New Zealand Journal of Public Health 2018;42(4):396–402. doi:10.1111/1753-6405.12804	29
Wilson R, Abbott JH. Development and validation of a new population-based simulation model of osteoarthritis in New Zealand. Osteoarthritis and Cartilage 2018;26(4):531–539. doi:10.1016/j.joca.2018.01.004	6
Wilson R, Blakely T, Abbott JH. Radiographic knee osteoarthritis impacts multiple dimensions of health-related quality of life: Data from the Osteoarthritis Initiative. Rheumatology 2018;57(5):891–899. doi:10.1093/RHEUMATOLOGY/KEY008	22
Abbott JH, Usiskin IM, Wilson R, Hansen P, Losina E. The quality-of-life burden of knee osteoarthritis in New Zealand adults: A model-based evaluation. PLOS ONE 2017;12(10):e0185676. doi:10.1371/journal.pone.0185676	60
Wilson R. Does Governance Cause Growth? Evidence from China. World Development 2016;79:138–151. doi:10.1016/j.worlddev.2015.11.015	75
Wilson R, Hansen P, Langley J, Derrett S. A comparison of injured patient and general population valuations of EQ-5D health states for New Zealand. Health and Quality of Life Outcomes 2014;12:21. doi:10.1186/1477-7525-12-21	18
Wilson R, Derrett S, Hansen P, Langley JD. Costs of injury in New Zealand: Accident Compensation Corporation spending, personal spending and quality-adjusted life years lost. Injury Prevention 2013;19:124–129. doi:10.1136/injuryprev-2011-040252	5
Williamson M, Wilson R, McKechnie RC, Ross J. Does the positive influence of an undergraduate rural placement persist into postgraduate years?. Rural and Remote Health 2012;12(2):2011. doi:10.22605/RRH2011	18
Wilson R, Derrett S, Hansen P, Langley J. Retrospective evaluation versus population norms for the measurement of baseline health status. Health and Quality of Life Outcomes 2012;10:68. doi:10.1186/1477-7525-10-68	63

Other publications

Statistical Analysis Plan for Reducing the burden of knee osteoarthritis through community pharmacy: A randomised controlled trial of the Knee Care for Arthritis through Pharmacy Service. With James Stanley and Ben Darlow. 18 October 2024. Available at https://hdl.handle.net/10523/42913
Economic evaluation of the effects of manual therapy for knee osteoarthritis: Study protocol. With Yana Pryymachenko, Haxby Abbott, and Cathy Chapple. 17 May 2024. Available at https://osf.io/arn9v/
Interventions used to Improve Health Outcomes in Patients with Multimorbidity: Protocol for An Updated Systematic Review. With Yen Wei Lim, Ibrahim Al-Busaidi, Richelle Caya, Alessio Bricca, Dee Mangin, and Haxby Abbott. 22 April 2024. Available at https://doi.org/10.17605/osf.io/vypqh
Health system and societal costs following osteoarthritis diagnosis in primary care: a population-based matched cohort study. With Yana Pryymachenko, Deborah Schofield, Rupendra Shrestha, Ben Darlow, Tony Dowell, Jayden MacRae, Ricky Bell, and Haxby Abbott. 19 April 2024. Available at https://doi.org/10.17605/osf.io/8b39f
The long-term effects of opioid use before joint replacement surgery: A dose-response trial emulation with New Zealand linked register data. Analysis plan. With Yana Pryymachenko, Haxby Abbott, Peter Choong, and Michelle Dowsey. 8 September 2023. Available at https://doi.org/10.17605/osf.io/g52kt
The health system and societal costs of osteoarthritis in New Zealand: Methodology and results of the process for funding an optimal matching model. With Haxby Abbott and Yana Pryymachenko. 5 July 2023. Available at https://doi.org/10.6084/m9.figshare.22661551.v3
Long-term outcomes of cruciate ligament injury: a revised matched cohort analysis of New Zealand linked register data. Analysis plan. With Yana Pryymachenko, Haxby Abbott, and Ricky Bell. 6 June 2023. Available at https://doi.org/10.17605/osf.io/9yu5r
Long-term outcomes of cruciate ligament injury: attempting a matched cohort analysis of New Zealand linked register data. With Yana Pryymachenko and Haxby Abbott. 14 April 2023. Available at https://doi.org/10.17605/osf.io/zfuyg
The health system and societal costs of osteoarthritis in New Zealand: Analysis plan. With Haxby Abbott, Yana Pryymachenko, Deborah Schofield, and Rupendra Shrestha. 6 May 2022. Available at https://doi.org/10.6084/m9.figshare.16900156
The long-term impacts of opioid use before and after joint replacement surgery: Report on finding the optimal matching model. With Yana Pryymachenko and Haxby Abbott. 27 July 2021. Available at https://hdl.handle.net/10523/12166
How New Zealand’s healthcare system is failing people with osteoarthritis. With Haxby Abbott. An article for a general audience on problems with the management of osteoarthritis in the New Zealand healthcare system, and recommendations for delivering more effective and cost-effective treatments, based on our HRC-funded research. The Conversation, 31 March 2021. Available at https://theconversation.com/how-new-zealands-healthcare-system-is-failing-people-with-osteoarthritis-157138
CMOR Evidence Table. An interactive web application presenting results from a research project, The Impact and Management of Rising Osteoarthritis Burden, on stakeholder preferences and cost-effectiveness of different treatments for knee osteoarthritis 1 December 2020. Available at http://cmor-shiny.otago.ac.nz
Baseline Data Capture: Cultural Safety, Partnership, and Health Equity Initiatives. With Shirley Simmonds, Marnie Carter, and Nick Preval. For the Medical Council of New Zealand Allen + Clarke, Wellington, September 2020.
Evaluation of the Mobility Action Programme (MAP), Cycle 2 report. With Jessie Wilson, Haxby Abbott, Brendan Stevenson, and Yasmine Kayem. For the New Zealand Ministry of Health Allen + Clarke, Wellington, March 2020.
Evaluation of the Mobility Action Programme (MAP), Cycle 1 report. With Nicole Waru, Jessie Wilson, Carolyn Hooper, Nick Preval, and J Haxby Abbott. For the New Zealand Ministry of Health Allen + Clarke, Wellington, December 2018.

Presentations

Virtual Health Information Network (VHIN). Webinar, August 2025. Long-term health and economic impacts of cruciate ligament injuries [invited presentation]
Aotearoa Osteoarthritis Research Network Annual Meeting. Auckland, July 2025. The long-term effects of opioid use before joint replacement surgery: A dose-response trial emulation using linked administrative data
New Zealand Association of Economists 65th Annual Conference. Wellington, June 2025. Clinical practice guideline implementation to improve healthcare delivery and reduce healthcare costs
8th Pharmacoepidemiology Research Network Symposium. Dunedin, November 2024. The long-term effects of opioid use before total joint replacement surgery: a dose-response trial emulation with New Zealand linked administrative data
ACR Convergence. Washington, D.C., November 2024. Cost-effectiveness of low dose colchicine prophylaxis when starting allopurinol using the “Start-Low Go-Slow” approach for gout [poster presentation]
National Institute for Public Health, University of Southern Denmark. Seminar, September 2024. The New Zealand Integrated Data Infrastructure (IDI)
PROgrez Research and Implementation Unit, Region Sjælland. Seminar, September 2024. Why economic evaluations are important in health research and how to get started
Clinical Pharmacology, Pharmacy and Environmental Medicine, Department of Public Health, University of Southern Denmark. Seminar, September 2024. Health economics for pharmacoepidemiologists – a primer
Department of Sports Science and Clinical Biomechanics, University of Southern Denmark. Seminar, September 2024. Impacts of preoperative opioid use on outcomes after joint replacement surgery
Center for Muscle and Joint Health, University of Southern Denmark. Seminar, September 2024. Why health economic evaluations are important in muscle and joint research and how to get started
Bruce McMillan Memorial Seminar. Dunedin, July 2024. The long-term impacts of opioid use before and after joint arthroplasty [invited presentation]
OARSI World Congress. Vienna, April 2024. Health system and societal costs following osteoarthritis diagnosis in primary care [poster presentation]
OARSI World Congress. Vienna, April 2024. Predictive models for identifying hip and knee osteoarthritis in primary care electronic records: a natural language processing text classifier approach [poster presentation]
OARSI World Congress. Vienna, April 2024. The primary care diagnosis and management of osteoarthritis [poster presentation]
Aotearoa Osteoarthritis Research Network Annual Meeting. Dunedin, November 2023. The diagnosis and management of osteoarthritis in Aotearoa New Zealand primary care
Australia and New Zealand Musculoskeletal Clinical Trials Network (ANZMUSC) Annual Scientific Meeting. Sydney [Virtual], October 2023. Economic evaluation in a clinical trial: the LEAP trial [invited presentation]
Aotearoa Osteoarthritis Research Network Annual Meeting. Wellington, November 2022. Navigating the early-mid career research pathway [invited presentation]
Aotearoa Osteoarthritis Research Network Annual Meeting. Wellington, November 2022. Optimal treatment of hip and knee OA across the disease course
University of Otago Division of Health Sciences, Early and Mid-Career Researcher Annual Conference. Dunedin, November 2021. Incorporating economic evaluation in clinical research to support research impact
Back and Neck Pain Forum. Global virtual conference, November 2021. The effect of a guideline-implementation intervention (the FREE approach) on the primary care management of low back pain: Economic evaluation
Department of Surgical Sciences, Dunedin School of Medicine. Departmental seminar, November 2020. The CMOR Collaborative Research Writing initiative (CMOR-CREW)
Health Services Research Association of Australia and New Zealand, 11th Health Services and Policy Research Conference. Auckland, December 2019. The convergent validity of seven health state utility instruments
Health Services Research Association of Australia and New Zealand, 11th Health Services and Policy Research Conference. Auckland, December 2019. Modelling the cost-effectiveness of knee osteoarthritis treatments
New Zealand Orthopaedic Association Annual Scientific Meeting. Dunedin, October 2019. The projected burden of knee osteoarthritis in New Zealand: total joint replacement and healthcare expenditure
Department of Orthopaedic Surgery, Dunedin Hospital. Seminar, October 2019. The projected burden of knee osteoarthritis in New Zealand: total joint replacement and healthcare expenditure
Department of Surgical Sciences, Dunedin School of Medicine. Departmental seminar, October 2019. The projected burden of knee osteoarthritis in New Zealand: total joint replacement and healthcare expenditure
OARSI World Congress. Toronto, October 2019. The cost-effectiveness of recommended adjunctive osteoarthritis management options: Results from a computer simulation model [poster presentation]
OARSI World Congress. Toronto, October 2019. Integrating values and preferences with the best available evidence: A multi-criteria decision analysis approach [poster presentation]
OARSI World Congress. Toronto, October 2019. Projecting the healthcare burden of knee osteoarthritis in New Zealand: Results from a computer simulation model [poster presentation]
Department of Surgical Sciences, Dunedin School of Medicine,. Departmental seminar, June 2018. Age, Period, and Cohort Effects on Body Mass Index in New Zealand, 1997–2038
Department of Preventive and Social Medicine, Dunedin School of Medicine, University of Otago, and the Public Health Association Otago/Southland. Public Health Seminar, March 2017. The development and validation of a new population-based simulation model of osteoarthritis in New Zealand
ISPOR 19th Annual European Congress. Vienna, November 2016. Modelling total knee replacement surgery for osteoarthritis in New Zealand: Validation of a population-based state-transition microsimulation model [poster presentation]
Society for Medical Decision Making 38th Annual Meeting. Vancouver, October 2016. The health-loss burden of osteoarthritis in New Zealand: Results from a new computer simulation model [poster presentation]
Department of Surgical Sciences, Dunedin School of Medicine. Departmental seminar, September 2016. The development and validation of a new population-based simulation model of osteoarthritis in New Zealand
OARSI World Congress. Amsterdam, March 2016. Health-loss burden of osteoarthritis in New Zealand: Computer-simulation estimate and between-model cross-validation [poster presentation]