Emmanuel Gnanamanickam

Research Interests

Epidemiology Health Economics Child and Adolescent Health

Dr Emmanuel Gnanamanickam

Senior Research Fellow

Office of Health

College of Health

Eligible to supervise Masters and PhD (as Co-Supervisor) - email supervisor to discuss availability.

Available For Media Comment.

Emmanuel is a health services researcher with expertise in epidemiology, health economics, administrative and electronic health record data and data science. He holds a joint position as a senior research fellow and epidemiologist with the Adelaide EpiCentre (Centre for Clinical Epidemiology) at Adelaide University, based at the Royal Adelaide Hospital within the Central Adelaide Local Health Network (CALHN) and involved in various clinical and hospital epidemiology projects. He is also a researcher with the Health Economics and Social Policy withing the School of Public Health at Adelaide University.  Emmanuel is an accredited social worker (MSW 2002) with post-graduate training in public health and epidemiology at University of Sheffield and University of Copenhagen (Double MPH 2010) and University of Adelaide (PhD 2016). His health and human services research spans, maternal and neonatal health, oral health, dementia and aged care, cardiology, infectious dieseas, childhood adversity and Aboriginal health.Emmanuel has worked across all major universities in South Australia and SA Health, and several collaborations interstate, consequently having established collaborations across the health and social research sector in South Australia and beyond. He welcomes the opportunity to collaborate with anyone (including HDR and medical students/registrars) looking for expertise/supervision in health economics and epidemiology specifically using electronic health record and administrative data.

Emmanuel's research applies epidemiological, health economic and statistical analytical techniques to large linked adminstrative data and electronic medical record data to answer questions on access, provision and costs of health and human services. 

He has been involved in multiple projects across a wide range of clinical as well as wider health and social research sectors encompassing maternal and child health, oral health, health promotion, dementia and aged care, cardiology, child protection, incarceration, infectious diseases and Aboriginal health. 

Examples of current projects include, 

  • COVID-19 treatment efficacy in South Australia
  • Hospital activity in South Australia
  • Examination of Vancomycin use in hospital
  • ICU exit block
  • Impacts of Child Abuse and Neglect (iCAN)
  • Evaluation of culturally senstive, trauma informed, continuity of care for Aboriginal and Torres Strait Isalnder families

He welcomes to the opportunity to discuss collaborations or studentships (Masters, MPhil, PhD) around any of these projects or more widely in health and social services research. 

Date Position Institution name
2023 - ongoing Senior Research Fellow University of Adelaide
2022 - ongoing Epidemiologist Royal Adelaide Hospital
2019 - 2022 Research Fellow (Adjunct) South Australian Health and Medical Research Institute
2019 - ongoing Academic Status Flinders University
2018 - ongoing Research Fellow University of South Australia
2017 - 2018 Research Fellow Flinders University
2017 - 2022 Data Manager Flinders Medical Centre
2017 - 2021 Visiting Fellow University of Adelaide
2011 - 2016 Research Officer University of Adelaide

Language Competency
English Can read, write, speak, understand spoken and peer review
Malayalam Can speak
Tamil Can read, write, speak and understand spoken

Date Institution name Country Title
2016 University of Adelaide Australia PhD
2010 University of Sheffield United Kingdom Master of Public Health
2010 University of Copenhagen Denmark Master of Public Health
2004 Madras Christian College (University of Madras) India Master of Social Work
2002 Madras Christian College (University of Madras) India Bachelor of Commerce

Date Title Institution name Country
2020 CHIA Australian Institute of Digital Health -

Year Citation
2025 Gnanamanickam, E. S., Nguyen, H., Armfield, J. M., Doidge, J. C., Brown, D. S., Preen, D. B., & Segal, L. (2025). Hospitalizations among children involved in the child protection system: a long-term birth cohort study from infancy to adulthood using administrative data. Child Abuse and Neglect, 107(104518), 104518-1-104518-14.
DOI Scopus15 WoS16 Europe PMC10
2025 Hammat, A. S., Gnanamanickam, E. S., Cho, C. H., Ramasamy, B., Nelson, R., Campbell, D., . . . Callary, S. A. (2025). Diagnosis and Treatment Influence Hospital Costs of Revision Total Hip Arthroplasty: A Systematic Review and Meta-Analysis.. J Arthroplasty, 40(9), 2423-2431.e2.
DOI Scopus3 WoS2 Europe PMC2
2025 Nadkarni, A., Besic, N., Yap, J., Micik, S., Chapple, L. -A. S., Gnanamanickam, E., . . . Farquharson, M. (2025). Rationalising arterial blood gas sampling analysis in the intensive care unit: A before-and-after study. Australian Critical Care, 38(4), 101237.
DOI WoS1
2025 Hammat, A. S., D'Apollonio, T., Nelson, R., Campbell, D., Ramasamy, B., Solomon, L. B., . . . Callary, S. A. (2025). The higher hospital costs of revision total hip arthroplasty by diagnosis: analysis of cost drivers and periprosthetic joint infection treatment pathways. ANZ Journal of Surgery, online, 1-9.
DOI Europe PMC1
2024 Hammat, A. S., Nelson, R., Davis, J. S., Manning, L., Campbell, D., Solomon, L. B., . . . Callary, S. A. (2024). Estimation of two-year hospital costs of hip and knee periprosthetic joint infection treatments using activity-based costing. Bone and Joint Journal, 106 B(10), 1084-1092.
DOI Scopus11 Europe PMC2
2024 Hammat, A. S., Nelson, R., Davis, J. S., Manning, L., Campbell, D., Solomon, L. B., . . . Callary, S. A. (2024). Estimation of two- year hospital costs of hip and knee periprosthetic joint infection treatments using activity- based costing. BONE & JOINT JOURNAL, 106B(10), 1084-1092.
DOI WoS11
2024 Segal, L., & Gnanamanickam, E. S. (2024). The Australian Child Maltreatment Study: National prevalence and associated health outcomes of child abuse and neglect.. The Medical journal of Australia, 220(5), 275.
DOI Scopus2 WoS3 Europe PMC2
2024 Batty, G. D., Kivimäki, M., Almquist, Y. B., Eriksson, J. G., Gissler, M., Gnanamanickam, E. S., . . . Frank, P. (2024). Cardiovascular Disease Events in Adults with a History of State Care in Childhood: Pooling of Unpublished Results from 9 Cohort Studies.. medRxiv.
DOI
2024 Lanais, K., Gnanamanickam, E., Maclean, M., & Segal, L. (2024). Investigating the impact of Out-of-Home Care on early childhood development. Child Abuse and Neglect, 154(106856), 106856-1-106856-11.
DOI Scopus4 WoS4 Europe PMC2
2024 Jones, K. A., Henderson, H., Bright, T., Segal, L., Mauerhofer, O., Lake, K. J., . . . Chamberlain, C. (2024). Healing the Past by Nurturing the Future: trauma-aware, healing-informed care to improve support for Aboriginal and Torres Strait Islander families - implementation and evaluation study protocol. BMJ Open, 14(7), e085555-1-e085555-10.
DOI WoS1
2024 Gnanamanickam, E. S., & Segal, L. (2024). Receipt of parenting, disability, unemployment, and other income support payments in persons aged 16 to 33 years - the associations with child maltreatment. Child Abuse and Neglect, 154, 106925-1-106925-10.
DOI Scopus2 WoS1 Europe PMC1
2024 Batty, G. D., Kivimäki, M., Almquist, Y. B., Eriksson, J. G., Gissler, M., Gnanamanickam, E. S., . . . Frank, P. (2024). Cardiovascular disease in adults with a history of out-of-home care during childhood: a systematic review and meta-analysis of prospective cohort studies. The Lancet Regional Health - Europe, 43(100984), 100984.
DOI Scopus1 WoS1 Europe PMC1
2023 Gnanamanickam, E. S., Brown, D. S., Armfield, J. M., & Segal, L. (2023). Excess hospital costs incurred by individuals with child abuse and neglect history in South Australia: A birth-cohort study. Preventive Medicine, 166(article no.107378), 107378-1-107378-8.
DOI Scopus6 WoS6 Europe PMC2
2023 Segal, L., Dawe, S., Nguyen, H., Dennison, S., Gnanamanickam, E. S., Bell, M., . . . Preen, D. B. (2023). Child protection system involvement in children of incarcerated mothers: A linked data study. Child Abuse and Neglect, 139(106126), 106126.
DOI Scopus4 WoS4
2023 Tan, J. Y., Chew, D. P., Lambrakis, K., Tiver, K. D., Gnanamanickam, E. S., Muthuranjan, C., . . . De Pasquale, C. G. (2023). Sodium-Glucose Cotransporter 2 Inhibitors in South Australia: The Magic Before the Fame.. Heart Lung Circ, 32(11), 1369-1377.
DOI
2022 Gnanamanickam, E. S., Nguyen, H., Armfield, J. M., Doidge, J. C., Brown, D. S., Preen, D. B., & Segal, L. (2022). Child maltreatment and emergency department visits: a longitudinal birth cohort study from infancy to early adulthood. Child Abuse and Neglect, 123(105397), 105397-1-105397-11.
DOI Scopus17 WoS17 Europe PMC12
2022 Chuang, M. Y. A., Gnanamanickam, E. S., Karnon, J., Lambrakis, K., Horsfall, M., Blyth, A., . . . Chew, D. P. (2022). Cost effectiveness of a 1-hour high-sensitivity troponin-T protocol: an analysis of the RAPID-TnT trial. IJC Heart and Vasculature, 38, 1-8.
DOI Scopus11 WoS9 Europe PMC6
2021 Armfield, J. M., Gnanamanickam, E. S., Johnston, D. W., Preen, D. B., Brown, D. S., Nguyen, H., & Segal, L. (2021). Intergenerational transmission of child maltreatment in South Australia, 1986-2017: a retrospective cohort study. The Lancet Public Health, 6(7), e450-e461.
DOI Scopus46 WoS45 Europe PMC27
2021 Segal, L., Doidge, J., Armfield, J. M., Gnanamanickam, E. S., Preen, D. B., Brown, D. S., & Nguyen, H. (2021). Association of child maltreatment with risk of death during childhood in South Australia. JAMA Network Open, 4(6), 1-13.
DOI Scopus13 WoS12 Europe PMC7
2021 Armfield, J. M., Ey, L. A., Zufferey, C., Gnanamanickam, E. S., & Segal, L. (2021). Educational strengths and functional resilience at the start of primary school following child maltreatment. Child Abuse and Neglect, 122(105301), 105301-1-105301-12.
DOI Scopus13 WoS12 Europe PMC6
2021 Segal, L., Armfield, J. M., Gnanamanickam, E. S., Preen, D. B., Brown, D. S., Doidge, J., & Nguyen, H. (2021). Child Maltreatment and Mortality in Young Adults.. Pediatrics, 147(1, article no. e2020023416), e2020023416.
DOI Scopus55 WoS56 Europe PMC42
2020 Armfield, J. M., Gnanamanickam, E., Nguyen, H. T., Doidge, J. C., Brown, D. S., Preen, D. B., & Segal, L. (2020). School absenteeism associated with child protection system involvement, maltreatment type, and time in out-of-home care. Child Maltreatment, 25(4), 433-445.
DOI Scopus18 WoS17 Europe PMC6
2020 Crotty, M., Gnanamanickam, E. S., Cameron, I., Agar, M., Ratcliffe, J., & Laver, K. (2020). Are people in residential care entitled to receive rehabilitation services following hip fracture? Views of the public from a citizens' jury. BMC Geriatrics, 20(1), 172-1-172-8.
DOI Scopus9 WoS9 Europe PMC7
2020 Gnanamanickam, E. S., Dyer, S. M., Harrison, S. L., Liu, E., Whitehead, C., & Crotty, M. (2020). Associations between cognitive function, hospitalizations and costs in nursing homes: a cross-sectional study. Journal of Aging and Social Policy, 34(4), 552-567.
DOI Scopus4 WoS4 Europe PMC4
2019 Segal, L., Nguyen, H., Mansor, M. M., Gnanamanickam, E., Doidge, J. C., Preen, D. B., . . . Armfield, J. M. (2019). Lifetime risk of child protection system involvement in South Australia for Aboriginal and non-Aboriginal children, 1986–2017 using linked administrative data. Child Abuse and Neglect, 97(104145), 104145-1-104145-11.
DOI Scopus27 WoS26 Europe PMC18
2019 Harrison, S. L., Dyer, S. M., Milte, R., Liu, E., Gnanamanickam, E. S., & Crotty, M. (2019). Alternative staffing structures in a clustered domestic model of residential aged care in Australia. Australasian Journal on Ageing, 38(S2), 68-74.
DOI Scopus6 WoS5 Europe PMC3
2019 Amarasena, N., Gnanamanickam, E. S., & Miller, J. (2019). Effects of interdental cleaning devices in preventing dental caries and periodontal diseases: a scoping review.. Australian dental journal, 64(4), 327-337.
DOI Scopus29 WoS25 Europe PMC19
2019 S Gnanamanickam, E., M Dyer, S., Milte, R., Liu, E., Ratcliffe, J., & Crotty, M. (2019). Clustered domestic model of residential care is associated with better consumer rated quality of care. International Journal for Quality in Health Care, 31(6), 419-425.
DOI Scopus10 WoS9 Europe PMC6
2019 Liu, E., Dyer, S. M., Whitehead, C., O'Donnell, L. K., Gnanamanickam, E. S., Harrison, S. L., . . . Crotty, M. (2019). Patterns of medication prescription by dementia diagnosis in Australian nursing home residents: a cross-sectional study. Journal of Pharmacy Practice and Research, 49(1), 33-40.
DOI Scopus6
2018 Dyer, S. M., Gnanamanickam, E. S., Liu, E., Whitehead, C., & Crotty, M. (2018). Diagnosis of dementia in residential aged care settings in Australia: an opportunity for improvements in quality of care?. Australasian Journal on Ageing, 37(4), E155-E158.
DOI Scopus34 WoS33 Europe PMC29
2018 Gnanamanickam, E., Dyer, S., Milte, R., Harrison, S., Liu, E., Easton, T., . . . Crotty, M. (2018). Direct health and residential care costs of people living with dementia in Australian residential aged care. International Journal of Geriatric Psychiatry, 33(7), 859-866.
DOI Scopus35 WoS31 Europe PMC30
2018 Harrison, S., Kouladjian O Donnell, L., Bradley, C., Milte, R., Dyer, S., Gnanamanickam, E., . . . Crotty, M. (2018). Associations between the Drug Burden Index, potentially inappropriate medications and quality of life in residential aged care. Drugs and Aging, 35(1), 83-91.
DOI Scopus52 WoS46 Europe PMC40
2018 Harrison, S., Kouladjian O'Donnell, L., Milte, R., Dyer, S., Gnanamanickam, E., Bradley, C., . . . Crotty, M. (2018). Costs of potentially inappropriate medication use in residential aged care facilities. BMC Geriatrics, 18(1), 9-1-9-10.
DOI Scopus70 WoS66 Europe PMC53
2018 Dyer, S., Liu, E., Gnanamanickam, E., Milte, R., Easton, T., Harrison, S., . . . Crotty, M. (2018). Clustered domestic residential aged care in australia: fewer hospitalisations and better quality of life. Medical Journal of Australia, 208(10), 433-438.
DOI Scopus48 WoS45 Europe PMC31
2018 Laver, K., Gnanamanickam, E., Whitehead, C., Kurrle, S., Corlis, M., Ratcliffe, J., . . . Crotty, M. (2018). Introducing consumer directed care in residential care settings for older people in Australia: Views of a citizens’ jury. Journal of Health Services Research and Policy, 23(3), 176-184.
DOI Scopus3 WoS4 Europe PMC2
2018 Oral Presentations (2018). Australasian Journal on Ageing, 37(S2), 20-48.
DOI
2017 Laver, K., Gnanamanickam, E., Ratcliffe, J., Shulver, W., Cameron, I., Agar, M., & Crotty, M. (2017). A CITIZENS JURY TO INFORM POLICY ON REHABILITATION FOR PEOPLE IN RESIDENTIAL CARE WITH HIP FRACTURE. Innovation in Aging, 1(suppl_1), 226.
DOI
2017 Liu, E., Dyer, S. M., O'Donnell, L. K., Milte, R., Bradley, C., Harrison, S. L., . . . Crotty, M. (2017). Association of cardiovascular system medications with cognitive function and dementia in older adults living in nursing homes in Australia. Journal of Geriatric Cardiology, 14(6), 407-415.
DOI Scopus14 WoS13 Europe PMC11
2017 Gnanamanickam, E., Teusner, D., Arrow, P., & Brennan, D. (2017). Dental insurance, service use and health outcomes in Australia: a systematic review. Australian Dental Journal, 63(1), 4-13.
DOI Scopus33 WoS30 Europe PMC22
2017 Teusner, D., Smith, V., Gnanamanickam, E., & Brennan, D. (2017). Examining dental expenditure and dental insurance accounting for probability of incurring expenses. Community Dentistry and Oral Epidemiology, 45(2), 101-111.
DOI Scopus8 WoS7 Europe PMC7
2013 Teusner, D., Brennan, D., & Gnanamanickam, E. (2013). Individual dental expenditure by Australian adults. Australian Dental Journal, 58(4), 498-506.
DOI Scopus10 WoS10 Europe PMC7

Year Citation
2021 Chuang, A., Gnanamanickam, E., Lambrakis, K., Horsfall, M., Karnon, J., Blyth, A., . . . Chew, D. P. (2021). Cost Effectiveness of a 1-Hour High-Sensitivity Troponin-t Protocol in Suspected Acute Coronary Syndrome: A Trial-Based Analysis of the Rapid-tnt Randomised Trial. In CIRCULATION Vol. 144 (pp. 3 pages). MA, Boston: LIPPINCOTT WILLIAMS & WILKINS.

Year Citation
2018 Harrison, S., Dyer, S., O'Donnell, L. K., Milte, R., Gnanamanickam, E., Hilmer, S., . . . Crotty, M. (2018). Increased drug burden and potentially inappropriate medication use associates with hospitalisations in older people living in residential care. Poster session presented at the meeting of AUSTRALASIAN JOURNAL ON AGEING. WILEY.
2018 Dyer, S., Gnanamanickam, E., Liu, E., Whitehead, C., & Crotty, M. (2018). Lack of dementia diagnosis in Australian residential aged care - an opportunity for improvements in quality of care?. Poster session presented at the meeting of AUSTRALASIAN JOURNAL ON AGEING. WILEY.
2014 Gnanamanickam, E. S., Teusner, D. N., & Brennan, D. S. (2014). Oral health and its relationship with prospective dental service use. Poster session presented at the meeting of Programme and Abstract Book 54th Annual Scientific Meeting of the International Association for Dental Research. Brisbane, Queensland, Australia.

Year Citation
2016 Gnanamanickam, E. S. (2016). Dental insurance, dental service use and health outcomes: effectiveness and cost-effectiveness among Australian adults. (PhD Thesis, University of Adelaide).

Year Citation
2024 Chamberlain, C., Sundbery, J., Segal, L., Krakouer, J., Langton, M., Donnelly, J., . . . Marriott, R. (2024). Replanting the Birthing Trees to Support Aboriginal and Torres Strait Islander Parents and Babies: Protocol for developmental evaluation of a comprehensive culturally responsive, trauma-aware, healing-informed, continuity of care(r) model.
DOI
2024 Batty, G. D., Kivimäki, M., Almquist, Y. B., Eriksson, J. G., Gissler, M., Gnanamanickam, E., . . . Frank, P. (2024). Cardiovascular Disease Events in Adults with a History of State Care in Childhood: Pooling of Unpublished Results from 9 Cohort Studies.
DOI
2019 Dyer, S. M., Liu, E., Gnanamanickam, E., Harrison, S. L., Milte, R., & Crotty, M. (2019). People living in residential aged care need to BE outside not just SEE outside: associations between quality of life and outdoor access: a cross-sectional study.
DOI Europe PMC1

2025-26 (CI)       $197,211 – HSCGB funding

2023-29 (CI)       $499,350 – MRFF EMCR Grant - Relighting the firesticks to foster a healthy start to life for Aboriginal families  

2020-22 (PI)       $40,000 - Channel 7 – Children’s research foundation, ECR grant

2020-21 (PI)       $40,000 – UniSA Research Themes Investment Scheme (RTIS)

2018-19 (CI)       $25,000 - University of South Australia Cancer Research Institute Grant

Date Role Research Topic Program Degree Type Student Load Student Name
2023 External Supervisor Cost Analysis of Revision Total Hip Replacement Doctor of Philosophy Doctorate Full Time Mr Aaron Scott Hammat
2023 Co-Supervisor Children with substantiated child maltreatment - What is the effect of removal to alternate (out-of-home) care during early childhood on early development and well-being. Doctor of Philosophy Doctorate Full Time Ms Krystal Lanais
2023 Co-Supervisor Cost Analysis of Revision Total Hip Replacement Doctor of Philosophy Doctorate Full Time Mr Aaron Scott Hammat

Date Role Research Topic Location Program Supervision Type Student Load Student Name
2023 - ongoing Co-Supervisor Children with substantiated child maltreatment – What is the effect of removal to alternate (out-of-home) care during early childhood? University of South Australia Doctor of Philosophy Doctorate Full Time Ms Krystal Lanais
2022 - 2022 Co-Supervisor Investigating the Impact of Out-of-Home Care on Early Childhood Development: A Propensity-Matched Study University of South Australia Psychology Honours Honours Full Time Ms Krystal Lanais

Date Role Board name Institution name Country
2014 - ongoing Treasurer Future Health Leaders Inc Future Health Leaders Inc Australia
2014 - 2016 Co-Chair Future Health Leaders National Council Future Health Leaders Inc. Australia

Date Role Committee Institution Country
2022 - ongoing Member Conference committee, Health services and policy research conference 2022, Sydney, Australia Health Services Research Association of Australia and New Zealand Australia
2021 - ongoing Member HSRAANZ Best PhD Award Panel Health Services Research Association of Australia and New Zealand Australia

Date Office Name Institution Country
2022 - ongoing Secretary Health Services Research Association of Australia and New Zealand Australia
2018 - 2022 Ordinary Member Health Services Research Association of Australia and New Zealand Australia

Date Title Type Institution Country
2021 - 2022 Digital health Institute Summit 2021-2022 Peer Review Australasian Institute of Digital Health -

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