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Giorgi Kvizhinadze, Department of Public Health

Giorgi Kvizhinadze

Master of Mathematics, PhD in Statistics

Senior Research Fellow; BODE³

Contact details 

Tel +64 4 918 6187
Fax +64 4 389 5319
Email giorgi.kvizhinadze@otago.ac.nz

Research interests and activities 

Giorgi is a researcher on the Burden of Disease Epidemiology, Equity and Cost-Effectiveness Programme (BODE³). Giorgi's main role on the programme includes mathematical modeling for various health system interventions, uncertainty and sensitivity analysis.

Giorgi’s other research interests include methodologies of estimating health system costs, productivity costs and welfare costs. As well as, broadly, statistical methods in health economic evaluation.

Publications 

Wu, H. Kvizhinadze, G. Martingale limit theorems of divisible statistics in a multinomial scheme with mixed frequencies. Statistics and Probability Letters. August 2011; 81 (8): 1128-1135.

Wu, H. Kvizhinadze, G. Diversity analysis in multiple-choice questionnaires. Statistics and Probability Letters. 1-15 July 2010; 80 (13-14):1103-1110.

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Publications

Boyd, M., Kvizhinadze, G., Kho, A., Wilson, G., & Wilson, N. (2020). Cataract surgery for falls prevention and improving vision: Modelling the health gain, health system costs and cost-effectiveness in a high-income country. Injury Prevention, 26, 302-309. doi: 10.1136/injuryprev-2019-043184

Cleghorn, C., Blakely, T., Jones, A., Kvizhinadze, G., Mizdrak, A., Nghiem, N., Ni Mhurchu, C., & Wilson, N. (2019). Feasible diet intervention options to improve health and save costs for the New Zealand population. Wellington, New Zealand: Department of Public Health, University of Otago. 13p. Retrieved from https://www.otago.ac.nz/wellington/departments/publichealth

Cleghorn, C. L., Wilson, N., Nair, N., Kvizhinadze, G., Nghiem, N., McLeod, M., & Blakely, T. (2019). Health benefits and costs of weight-loss dietary counselling by nurses in primary care: A cost-effectiveness analysis. Public Health Nutrition, 23(1), 83-93. doi: 10.1017/s1368980019002945

Nair, N., Kvizhinadze, G., Jones, G. T., Rush, R., Khashram, M., Roake, J., & Blakely, A. (2019). Health gains, costs and cost-effectiveness of a population-based screening programme for abdominal aortic aneurysms. British Journal of Surgery, 106(8), 1043-1054. doi: 10.1002/bjs.11169

Cleghorn, C., Wilson, N., Nair, N., Kvizhinadze, G., Nghiem, N., McLeod, M., & Blakely, T. (2019). Health benefits and cost-effectiveness from promoting smartphone apps for weight loss: Multistate life table modeling. JMIR mHealth & uHealth, 7(1), e11118. doi: 10.2196/11118

Cleghorn, C., Blakely, T., Jones, A., Kvizhinadze, G., Mizdrak, A., Nghiem, N., Ni Mhurchu, C., & Wilson, N. (2019). Feasible diet intervention options to improve health and save costs for the New Zealand population. Wellington, New Zealand: Department of Public Health, University of Otago. 13p. Retrieved from https://www.otago.ac.nz/wellington/departments/publichealth

Working Paper; Discussion Paper; Technical Report

Wilson, N., Blakely, T., Nghiem, N., Cleghorn, C., Kvizhinadze, G., Atkinson, J., Nair, N., Mizdrak, A., & van der Deen, F. S. (2017). Guide for ensuring high quality of modelling outputs in the BODE3 programme. Wellington, New Zealand: Department of Public Health, University of Otago. 22p. Retrieved from http://www.otago.ac.nz/wellington/departments/publichealth

Working Paper; Discussion Paper; Technical Report

Boyd, M., Kvizhinadze, G., Kho, A., Wilson, G., & Wilson, N. (2020). Cataract surgery for falls prevention and improving vision: Modelling the health gain, health system costs and cost-effectiveness in a high-income country. Injury Prevention, 26, 302-309. doi: 10.1136/injuryprev-2019-043184

Journal - Research Article

Blakely, T., Kvizhinadze, G., Atkinson, J., Dieleman, J., & Clarke, P. (2019). Health system costs for individual and comorbid noncommunicable diseases: An analysis of publicly funded health events from New Zealand. PLoS Medicine, 16(1), e1002716. doi: 10.1371/journal.pmed.1002716

Journal - Research Article

Cleghorn, C. L., Wilson, N., Nair, N., Kvizhinadze, G., Nghiem, N., McLeod, M., & Blakely, T. (2019). Health benefits and costs of weight-loss dietary counselling by nurses in primary care: A cost-effectiveness analysis. Public Health Nutrition, 23(1), 83-93. doi: 10.1017/s1368980019002945

Journal - Research Article

Cleghorn, C., Wilson, N., Nair, N., Kvizhinadze, G., Nghiem, N., McLeod, M., & Blakely, T. (2019). Health benefits and cost-effectiveness from promoting smartphone apps for weight loss: Multistate life table modeling. JMIR mHealth & uHealth, 7(1), e11118. doi: 10.2196/11118

Journal - Research Article

Deverall, E., Kvizhinadze, G., Pega, F., Blakely, T., & Wilson, N. (2019). Exercise programmes to prevent falls among older adults: Modelling health gain, cost-utility and equity impacts. Injury Prevention, 25(4), 258-263. doi: 10.1136/injuryprev-2016-042309

Journal - Research Article

Nair, N., Kvizhinadze, G., Jones, G. T., Rush, R., Khashram, M., Roake, J., & Blakely, A. (2019). Health gains, costs and cost-effectiveness of a population-based screening programme for abdominal aortic aneurysms. British Journal of Surgery, 106(8), 1043-1054. doi: 10.1002/bjs.11169

Journal - Research Article

Petrović-van der Deen, F. S., Blakely, T., Kvizhinadze, G., Cleghorn, C. L., Cobiac, L. J., & Wilson, N. (2019). Restricting tobacco sales to only pharmacies combined with cessation advice: A modelling study of the future smoking prevalence, health and cost impacts. Tobacco Control, 28, 643-650. doi: 10.1136/tobaccocontrol-2018-054600

Journal - Research Article

Cleghorn, C. L., Blakely, T., Kvizhinadze, G., van der Deen, F. S., Nghiem, N., Cobiac, L. J., & Wilson, N. (2018). Impact of increasing tobacco taxes on working-age adults: Short-term health gain, health equity and cost savings. Tobacco Control, 27(e2), e167-e170. doi: 10.1136/tobaccocontrol-2017-053914

Journal - Research Article

Jaine, R., Kvizhinadze, G., Nair, N., & Blakely, T. (2018). Cost-effectiveness of a low-dose computed tomography screening programme for lung cancer in New Zealand. Lung Cancer, 124, 233-240. doi: 10.1016/j.lungcan.2018.08.004

Journal - Research Article

Khashram, M., Kvizhinadze, G., Khashram, Z., Williman, J. A., Jones, G. T., & Roake, J. A. (2018). Development and validation of a predictive model to aid in the management of intact abdominal aortic aneurysms. European Journal of Vascular & Endovascular Surgery, 56(1), 48-56. doi: 10.1016/j.ejvs.2018.03.013

Journal - Research Article

van der Deen, F. S., Wilson, N., Cleghorn, C. L., Kvizhinadze, G., Cobiac, L. J., Nghiem, N., & Blakely, T. (2018). Impact of five tobacco endgame strategies on future smoking prevalence, population health and health system costs: Two modelling studies to inform the tobacco endgame. Tobacco Control, 27(3), 278-286. doi: 10.1136/tobaccocontrol-2016-053585

Journal - Research Article

Boyd, M., Baker, M. G., Mansoor, O. D., Kvizhinadze, G., & Wilson, N. (2017). Protecting an island nation from extreme pandemic threats: Proof-of-concept around border closure as an intervention. PLoS ONE, 12(6), e0178732. doi: 10.1371/journal.pone.0178732

Journal - Research Article

McLeod, M., Kvizhinadze, G., Boyd, M., Barendregt, J., Sarfati, D., Wilson, N., & Blakely, T. (2017). Colorectal cancer screening: How health gains and cost-effectiveness vary by ethnic group, the impact on health inequalities, and the optimal age range to screen. Cancer Epidemiology, Biomarkers & Prevention, 26(9), 1391-1400. doi: 10.1158/1055-9965.epi-17-0150

Journal - Research Article

Pearson, A. L., Cleghorn, C. L., van der Deen, F. S., Cobiac, L. J., Kvizhinadze, G., Nghiem, N., Blakely, T., & Wilson, N. (2017). Tobacco retail outlet restrictions: Health and cost impacts from multistate life-table modelling in a national population. Tobacco Control, 26(5), 579-585. doi: 10.1136/tobaccocontrol-2015-052846

Journal - Research Article

Teng, A. M., Kvizhinadze, G., Nair, N., McLeod, M., Wilson, N., & Blakely, T. (2017). A screening program to test and treat for Helicobacter pylori infection: Cost-utility analysis by age, sex and ethnicity. BMC Infectious Diseases, 17(1), 156. doi: 10.1186/s12879-017-2259-2

Journal - Research Article

Wilson, N., Kvizhinadze, G., Pega, F., Nair, N., & Blakely, T. (2017). Home modification to reduce falls at a health district level: Modeling health gain, health inequalities and health costs. PLoS ONE, 12(9), e0184538. doi: 10.1371/journal.pone.0184538

Journal - Research Article

Collinson, L., Kvizhinadze, G., Nair, N., McLeod, M., & Blakely, T. (2016). Economic evaluation of single-fraction versus multiple-fraction palliative radiotherapy for painful bone metastases in breast, lung and prostate cancer. Journal of Medical Imaging & Radiation Oncology, 60, 650-660. doi: 10.1111/1754-9485.12467

Journal - Research Article

Leung, W., Kvizhinadze, G., Nair, N., & Blakely, T. (2016). Adjuvant trastuzumab in HER2-positive early breast cancer by age and hormone receptor status: A cost-utility analysis. PLoS Medicine, 13(8), e1002067. doi: 10.1371/journal.pmed.1002067

Journal - Research Article

Nair, N., Kvizhinadze, G., & Blakely, T. (2016). Cancer care coordinators to improve tamoxifen persistence in breast cancer: How heterogeneity in baseline prognosis impacts on cost-effectiveness. Value in Health, 19(8), 936-944. doi: 10.1016/j.jval.2016.05.015

Journal - Research Article

Pega, F., Kvizhinadze, G., Blakely, T., Atkinson, J., & Wilson, N. (2016). Home safety assessment and modification to reduce injurious falls in community-dwelling older adults: Cost-utility and equity analysis. Injury Prevention, 22(6), 420-426. doi: 10.1136/injuryprev-2016-041999

Journal - Research Article

Blakely, T., Atkinson, J., Kvizhinadze, G., Nghiem, N., McLeod, H., Davies, A., & Wilson, N. (2015). Updated New Zealand health system cost estimates from health events by sex, age and proximity to death: Further improvements in the age of 'big data'. New Zealand Medical Journal, 128(1422). Retrieved from https://www.nzma.org.nz/journal

Journal - Research Article

Blakely, T., Atkinson, J., Kvizhinadze, G., Wilson, N., Davies, A., & Clarke, P. (2015). Patterns of cancer care costs in a country with detailed individual data. Medical Care, 53(4), 302-309. doi: 10.1097/MLR.0000000000000330

Journal - Research Article

Blakely, T., Cobiac, L. J., Cleghorn, C. L., Pearson, A. L., van der Deen, F. S., Kvizhinadze, G., Nghiem, N., McLeod, M., & Wilson, N. (2015). Health, health inequality, and cost impacts of annual increases in tobacco tax: Multistate life table modeling in New Zealand. PLoS Medicine, 12(7), e1001856. doi: 10.1371/journal.pmed.1001856

Journal - Research Article

Blakely, T., Collinson, L., Kvizhinadze, G., Nair, N., Foster, R., Dennett, E., & Sarfati, D. (2015). Cancer care coordinators in stage III colon cancer: A cost-utility analysis. BMC Health Services Research, 15, 306. doi: 10.1186/s12913-015-0970-5

Journal - Research Article

Kvizhinadze, G., Wilson, N., Nair, N., McLeod, M., & Blakely, T. (2015). How much might a society spend on life-saving interventions at different ages while remaining cost-effective? A case study in a country with detailed data. Population Health Metrics, 13, 15. doi: 10.1186/s12963-015-0052-2

Journal - Research Article

Blakely, T., Atkinson, J., Kvizhinadze, G., Nghiem, N., McLeod, H., & Wilson, N. (2014). Health system costs by sex, age and proximity to death, and implications for estimation of future expenditure. New Zealand Medical Journal, 127(1393). Retrieved from http://www.nzma.org.nz/journal

Journal - Research Article

Blakely, T., Kvizhinadze, G., Karvonen, T., Pearson, A. L., Smith, M., & Wilson, N. (2014). Cost-effectiveness and equity impacts of three HPV vaccination programmes for school-aged girls in New Zealand. Vaccine, 32(22), 2645-2656. doi: 10.1016/j.vaccine.2014.02.071

Journal - Research Article

Hadorn, D., Kvizhinadze, G., Collinson, L., & Blakely, T. (2014). Use of expert knowledge elicitation to estimate parameters in health economic decision models. International Journal of Technology Assessment in Health Care, 30(4), 461-468. doi: 10.1017/S0266462314000427

Journal - Research Article

McLeod, M., Blakely, T., Kvizhinadze, G., & Harris, R. (2014). Why equal treatment is not always equitable: The impact of existing ethnic health inequalities in cost-effectiveness modeling. Population Health Metrics, 12, 15. doi: 10.1186/1478-7954-12-15

Journal - Research Article

Pearson, A. L., Kvizhinadze, G., Wilson, N., Smith, M., Canfell, K., & Blakely, T. (2014). Is expanding HPV vaccination programs to include school-aged boys likely to be value-for-money: A cost-utility analysis in a country with an existing school-girl program. BMC Infectious Diseases, 14, 351. doi: 10.1186/1471-2334-14-351

Journal - Research Article

Rachel Webber-Foster, Kvizhinadze, G., Rivalland, G., & Blakely, T. (2014). Cost-effectiveness analysis of docetaxel versus weekly paclitaxel in adjuvant treatment of regional breast cancer in New Zealand. Pharmacoeconomics, 32(7), 707-724. doi: 10.1007/s40273-014-0154-x

Journal - Research Article

Wilson, N., Nghiem, N., Higgins, A., Kvizhinadze, G., Baker, M. G., & Blakely, T. (2012). A national estimate of the hospitalisation costs for the influenza (H1N1) pandemic in 2009. New Zealand Medical Journal, 125(1365). Retrieved from http://www.nzma.org.nz/journal

Journal - Research Article

Wilson, N., Petrović-van der Deen, F. S., Cleghorn, C., Nghiem, N., Kvizhinadze, G., & Blakely, T. (2018). BODE3 intervention league table: Results for tobacco control interventions. Proceedings of the Smokefree 2025 Research Symposium. Retrieved from https://aspire2025.org.nz

Conference Contribution - Published proceedings: Abstract

Mansoor, O., Boyd, M., Baker, M., Kvizhinadze, G., & Wilson, N. (2017). Going against the stream: Closing the border in island nations to prevent severe pandemic threats. Proceedings of the New Zealand College of Public Health Medicine (NZCPHM) Annual Scientific Meeting and Workshop. (pp. 41). NZCPHM. Retrieved from https://www.nzcphm.org.nz/

Conference Contribution - Published proceedings: Abstract

Pearson, A., Cleghorn, C., van der Deen, F. S., Cobiac, L., Kvizhinadze, G., Nghiem, N., Blakely, T., & Wilson, N. (2017). Reduced access to tobacco retailers: Modelling health, equity and cost impacts at a national. Proceedings of the 23rd Society for Research on Nicotine & Tobacco (SRNT) Annual Meeting. (pp. 337). Retrieved from http://www.srnt.org/

Conference Contribution - Published proceedings: Abstract

van der Deen, F. S., Wilson, N., Cleghorn, C., Kvizhinadze, G., Cobiac, L., & Blakely, T. (2017). Can endgame interventions achieve a tobacco-free world by 2040? And with what QALY gains and cost savings? Proceedings of the 23rd Society for Research on Nicotine & Tobacco (SRNT) Annual Meeting. (pp. 98). Retrieved from http://www.srnt.org/

Conference Contribution - Published proceedings: Abstract

Wilson, N., Boyd, M., Baker, M., Mansoor, O., & Kvizhinadze, G. (2017). Modelling the potential costs and benefits of protecting an island nation from extreme pandemic threats. Proceedings of the 3rd One Health Aotearoa Symposium. Retrieved from https://onehealth.org.nz

Conference Contribution - Published proceedings: Abstract

Wilson, R., Abbott, J. H., Blakely, T., Kvizhinadze, G., & Losina, E. (2016). The health-loss burden of osteoarthritis in New Zealand: Results from a new computer-simulation model. Proceedings of the Society for Medical Decision Making (SMDM) 38th Annual North American Meeting. PS 3-4. Retrieved from http://smdm.org

Conference Contribution - Published proceedings: Abstract

Wilson, R., Abbott, J. H., Gwynne-Jones, D., Kvizhinadze, G., & Blakely, T. (2016). Modelling total knee replacement surgery for osteoarthritis in New Zealand: Validation of a population-based state-transition microsimulation model. Value in Health, 19(7), (pp. 548). doi: 10.1016/j.jval.2016.09.1165

Conference Contribution - Published proceedings: Abstract

Cleghorn, C., Cobiac, L., Nghiem, N., Kvizhinadze, G., Wilson, N., Ni Mhurchu, C., & Blakely, T. (2015). Modelling the QALYS gained and health system cost impacts of food taxes and subsidies in New Zealand: Multistate life table modelling of a sugar sweetened beverage tax and removing GST on fresh fruit and vegetables. Proceedings of the 11th World Congress: "De Gustibus Disputandum Non Est!" Health Economics and Nutrition: An. Retrieved from https://ihea2015.abstractsubmit.org/presentations/search/?terms=cleghorn

Conference Contribution - Published proceedings: Abstract

Kvizhinadze, G., Wilson, N., Nair, N., McLeod, M., & Blakely, T. (2014). A new framework for identifying cost-effective life-saving interventions by stage of the life course, a refinement on standard VSL approaches. Proceedings of the New Zealand Population Health Congress: Connecting Communities, Policy and Science. (pp. 262). Retrieved from http://www.pophealthcongress.org.nz/nzphc14/programme/programme

Conference Contribution - Published proceedings: Abstract

Nair, N., McDonald, A. M., Kvizhinadze, G., Wilson, N., & Blakely, T. (2015, November). A screening programme to test and treat H. pylori infection in New Zealand: A cost-utility analysis by age, sex and ethnicity. Keynote presentation at the 18th International Conference on Campylobacter, Helicobacter, and Related Organisms (CHRO), Rotorua, New Zealand.

Conference Contribution - Verbal presentation and other Conference outputs

Blakely, T., McLeod, M., Nghiem, N., Kvizhinadze, G., Quirke, T., Bartholomew, N., & Tobias, M. (2013, July). Using expected years of life lived with disability (YLDs) from a burden of disease study to account for expected comorbidity by sex, age and ethnic group in economic evaluations. Verbal presentation at the 9th World Congress on Health Economics: Celebrating Health Economics, Sydney, Australia.

Conference Contribution - Verbal presentation and other Conference outputs

McLeod, M., Blakely, T., & Kvizhinadze, G. (2013, July). How do you quantitatively incorporate equity into cost effectiveness analyses? First understand the heterogeneity. Verbal presentation at the 9th World Congress on Health Economics: Celebrating Health Economics, Sydney, Australia.

Conference Contribution - Verbal presentation and other Conference outputs

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