Dr Xenia Dolja-Gore

Dr Xenia Dolja-Gore

Research Fellow

Faculty of Health and Medicine (Statistics)

Career Summary

Biography

Xenia Dolja-Gore is an NHMRC Centre of Research Excellence in Women’s Health in the 21st Century (CREW21) research fellow at the Research Centre for Gender, Health and Ageing. Xenia’s work primarily involves the development and implementation of analytical techniques to explore and analyses linked longitudinal health data.

As senior bio-statistician for the group, Xenia’s role is to provide advice on the statistical direction for the analysis of linked survey, National Death Index, hospital and Medicare data.  In addition, Xenia gives statistical support and advice to junior members in the project team and contributes to the writing of research grant proposals.  As an academic statistician, Xenia is involved in contributing to government reports, writing academic papers for presentation at conferences and for submission to journals for publication, as well as contributing to the design and conduct of research projects. 

Xenia has been involved with statistical research in health related areas for over 20 years. During this time she has specialised in areas such as the development of appropriate patient care indicators and quality assurance in the health care sector and has now focused on mental health services utilisation and the social determinants that drive those in need to use mental health services.  Currently planned research for CREW21 includes an examination of factors associated with healthy ageing in older women.

Xenia has a background in Mathematics and is currently completing her PhD where she has applied the pseudo-randomised technique of propensity score analysis to the Australian Longitudinal Study on Women’s Health data linked to the Medicare Medical Benefits Schedule (MBS) and Pharmaceutical Benefits Scheme (PBS) data enabling an examination of the treatment effects of mental health service use for women with poor mental health. 

Xenia has successfully applied for over $200,000 in external research grants, co-authored four major reports submitted to the Department of Health and Ageing, has published eleven peer-reviewed journal articles and presented at 25 national and international conferences and invited to review articles for two well-known journals.

Teaching Expertise
Xenia has taught statistics to both under-graduate and post-graduate students, internal/external students. Under-graduate teaching included lesson preparation, student consultation time, marking of assignments and face to face teaching. Post-graduate courses were offered as distance learning courses and delivered via the web platform Blackboard. As several students are local, tutorial classes were also offered in a face-to-face environment.   

Xenia has also co-supervised two post-graduate masters students under the Masters of Public Health program.

Collaborations

Currently a participant of MURA users group, Health data linkage Interest Group and the SAX Institute Users groups.


Qualifications

  • Doctor of Philosophy, University of Newcastle
  • Bachelor of Mathematics, University of Newcastle
  • Graduate Diploma in Medical Statistics, University of Newcastle
  • Master of Science, University of Newcastle

Keywords

  • BioStatistics
  • Data Linkage
  • Health Services Research
  • Women's Health
  • statistics

Languages

  • Greek (Fluent)
  • English (Mother)

Fields of Research

Code Description Percentage
111799 Public Health and Health Services not elsewhere classified 35
010402 Biostatistics 65

Professional Experience

UON Appointment

Title Organisation / Department
Research Fellow University of Newcastle
Faculty of Health and Medicine
Australia

Academic appointment

Dates Title Organisation / Department
1/02/2006 -  Bio-Statistician Research Centre for Gender, Health and Ageing, The University of Newcastle, NSW
Australia
1/01/1992 - 1/02/2006 Statistician University of Newcastle
Health Services Research Group
Australia

Awards

Award

Year Award
2015 2015 IAGG Asia/Oceania Student Travel Awards
International Association of Gerontology and Geriatrics

Invitations

Distinguished Visitor

Year Title / Rationale
2012 Other than psychological distress what factors are associated with using mentla health services

Speaker

Year Title / Rationale
2008 Analysing Medicare Australia data Workshop
Organisation: National Prescribing Services Description: Discussing the Australian Longitudinal Study on Womens Health Data Linked to PBS Data.

Teaching

Code Course Role Duration
BIOS6910 Biostatistics A
Faculty of Health, University of Newcastle
Tutuor 31/03/1996 - 25/10/1998
BIOS6950 Advanced Biostatistics | BIOS6950
Faculty of Health, University of Newcastle
Tutor 25/07/1999 - 25/11/1999
BIOS6920 Biostatistics B
Faculty of Health, University of Newcastle
Tutor 25/07/1996 - 25/11/1998
BIOS6920 Biostatistics B | BIOS6920
Faculty of Health, University of Newcastle
Face-to-Face Tutor 25/07/2012 - 25/11/2012
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


(41 outputs)

Year Citation Altmetrics Link
2017 Loxton D, Dolja-Gore X, Anderson AE, Townsend N, 'Intimate partner violence adversely impacts health over 16 years and across generations: A longitudinal cohort study.', PLoS One, 12 e0178138 (2017)
DOI 10.1371/journal.pone.0178138
Co-authors Deborah Loxton, Amy Anderson
2017 Dolja-Gore X, Harris ML, Kendig H, Byles JE, 'Patterns of hospitalization risk for women surviving into very old age', Medical Care, 55 352-361 (2017)

Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved. Background: By 2050, adults aged 80 years and over will represent around 20% of the global population. Little is... [more]

Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved. Background: By 2050, adults aged 80 years and over will represent around 20% of the global population. Little is known about how adults surviving into very old age use hospital services over time. Objective: The objective of the study was to examine patterns of hospital usage over a 10-year period for women who were aged 84 to 89 in 2010 and examine factors associated with increased use. Methods: Survey data from 1936 women from the 1921 to 1926 cohort of the Australian Longitudinal Study on Women's Health were matched with the state-based Admitted Patients Data Collection. Hospital use profiles were determined using repeated measures latent class analysis. Results: Four latent class trajectories were identified. One-quarter of the sample were at low risk of hospitalization, while 20.6% demonstrated increased risk of hospitalization and a further 38.1% had moderate hospitalization risk over time. Only 16.8% of the sample was classified as having high hospitalization risk. Correlates of hospital use for very old women differed according to hospital use class and were contingent on the timing of exposure (ie, short-term or long-term). Conclusions: Despite the perception that older adults place a significant burden on health care systems, the majority of women demonstrated relatively low hospital use over an extended period, even in the presence of chronic health conditions. High hospitalization risk was found to be concentrated among a small minority of these long-term survivors. The findings suggest the importance of service planning and treatment regimes that take account of the diverse trajectories of hospital use into and through advanced old age.

DOI 10.1097/MLR.0000000000000636
Co-authors Melissa Harris, Julie Byles
2017 Wong CY, Greene J, Dolja-Gore X, van Gool K, 'The Rise and Fall in Out-of-Pocket Costs in Australia: An Analysis of the Strengthening Medicare Reforms', Health Economics (United Kingdom), 26 962-979 (2017)

Copyright © 2016 John Wiley & Sons, Ltd. After a period of steady decline, out-of-pocket (OOP) costs for general practitioner (GP) consultations in Australia began increasing i... [more]

Copyright © 2016 John Wiley & Sons, Ltd. After a period of steady decline, out-of-pocket (OOP) costs for general practitioner (GP) consultations in Australia began increasing in the mid-1990s. Following the rising community concerns about the increasing costs, the Australian Government introduced the Strengthening Medicare reforms in 2004 and 2005, which included a targeted incentive for GPs to charge zero OOP costs for consultations provided to children and concession cardholders (older adults and the poor), as well as an increase in the reimbursement for all GP visits. This paper examines the impact of those reforms using longitudinal survey and administrative data from a large national sample of women. The findings suggest that the reforms were effective in reducing OOP costs by an average of $A0.40 per visit. Decreases in OOP costs, however, were not evenly distributed. Those with higher pre-reform OOP costs had the biggest reductions in OOP costs, as did those with concession cards. However, results also reveal increases in OOP costs for most people without a concession card. The analysis suggests that there has been considerable heterogeneity in GP responses to the reforms, which has led to substantial changes in the fees charged by doctors and, as a result, the OOP costs incurred by different population groups. Copyright © 2016 John Wiley & Sons, Ltd.

DOI 10.1002/hec.3376
2016 Harris ML, Dolja-Gore X, Kendig H, Byles JE, 'First incident hospitalisation for Australian women aged 70 and beyond: A 10 year examination using competing risks', Archives of Gerontology and Geriatrics, 64 29-37 (2016) [C1]

© 2015 Elsevier Ireland Ltd. There are increasing concerns regarding high hospital use among older adults and the capacity to manage the economic impact of the ageing population ... [more]

© 2015 Elsevier Ireland Ltd. There are increasing concerns regarding high hospital use among older adults and the capacity to manage the economic impact of the ageing population trend on healthcare systems. First hospitalisation in old age may act as a catalyst for ongoing intensification of health problems and acute care use. This study examined factors associated with first incident hospitalisation in women aged over 70, accounting for the health inequalities associated with geographic location. Survey data from 3780 women from the 1921 to 1926 cohort of the Australian Longitudinal Study on Women's Health were matched with the Admitted Patients Data Collection and National Death Index. Days to first event (hospitalisation or death) were modelled using competing risks methods. A total of 3065 (80.3%) women had at least one hospital admission. More than half of the top 15 reasons for first hospitalisation were related to cardiovascular disease, with atrial fibrillation the most common. Proportional subdistribution hazards models showed that first hospital admission was driven by enabling and need factors including asthma/bronchitis diagnosis (HR = 1.16; p = 0.047), private health insurance (HR = 1.16; p = 0.004) more than two prescribed medications in previous month (HR = 1.31; p = 0.001), more than four general practitioner visits in previous year (HR = 1.50; p = 0.034), lower physical functioning (HR = 0.99; p < 0.001) and living in an inner regional area (HR = 1.17; p = 0.003). First overnight hospitalisation was primarily related with potentially preventable and treatable chronic diseases. Primary and secondary strategies aimed at chronic disease generally, and better chronic disease management particularly for cardiovascular and respiratory diseases, may play a vital role in disease prevention or delay in readmissions among this population.

DOI 10.1016/j.archger.2015.12.006
Co-authors Melissa Harris, Julie Byles
2016 Harris ML, Dolja-Gore X, Kendig H, Byles JE, 'End of life hospitalisations differ for older Australian women according to death trajectory: A longitudinal data linkage study', BMC Health Services Research, 16 (2016) [C1]
DOI 10.1186/s12913-016-1729-3
Co-authors Julie Byles, Melissa Harris
2015 Dolja-Gore X, Harris ML, Kendig H, Byles J, 'Determinants of overnight hospital admissions for Australians aged 85+ in their last year of life' (2015) [O1]
Co-authors Julie Byles, Melissa Harris
2015 Dolja-Gore X, Loxton D, D'Este C, Byles J, 'How effective are counselling services for women with poor mental health? (An Australian Study).' (2015) [O1]
Co-authors Julie Byles, Catherine Deste
2014 Dolja-Gore X, Loxton DJ, D'Este CA, Byles JE, 'Mental health service use: Is there a difference between rural and non-rural women in service uptake?', Australian Journal of Rural Health, 22 92-100 (2014) [C1]

This study examines differences in uptake of the Medicare items rolled out in 2006 under the 'Better Access Scheme' (BAS) between rural and non-rural Australian women. It compares... [more]

This study examines differences in uptake of the Medicare items rolled out in 2006 under the 'Better Access Scheme' (BAS) between rural and non-rural Australian women. It compares differences in women's uptake of the BAS services by area of residence (ARIA+) across time using the Australian Longitudinal Study of Women's Health (ALSWH) survey data linked to Medicare data. Women aged 28-33 years at the time the BAS was introduced that responded to the self-reported question on depression/anxiety and consented to linkage of their survey data with Medicare data (n=4316). Participants were grouped by ARIA+according to BAS use, diagnoses of anxiety/depression but no BAS use and other eligible women. Across all areas, women born 1973-1978 with a self-reported diagnosis of depression/anxiety or having treatment under the BAS had a significantly lower mean mental health score compared to other women. Significantly more women living in non-rural areas had used at least one service provided under the BAS initiative compared to women in outer regional, inner regional or remotes areas (21% versus 18% versus 13% versus 7%, respectively), and across all areas, 12% of women reported having a diagnosis of depression/anxiety but not been treated under the BAS. While there is a gradual uptake of the new BAS services, a large percentage of women who have a diagnosis of depression/anxiety have not been treated under the BAS. The data suggest that women in urban areas have been better able to take up the services compared to non-urban women. © 2014 National Rural Health Alliance Inc.

DOI 10.1111/ajr.12109
Citations Scopus - 1Web of Science - 2
Co-authors Deborah Loxton, Catherine Deste, Julie Byles
2014 Dolja-Gore X, Loxton D, D'Este C, Byles J, 'Use of observational data to examine treatment effects of medicare subsidised mental health (BAS) services.' (2014)
Co-authors Julie Byles, Deborah Loxton, Catherine Deste
2014 Dolja-Gore X, Loxton D, Byles J, D'Este C, 'Treatment effects on mental health outcomes for Australian women uptaking the ¿Better Access Scheme¿ mental health counselling services: A data linkage study.' (2014)
Co-authors Catherine Deste, Deborah Loxton, Julie Byles
2014 Dolja-Gore X, Loxton D, D'este C, Byles J, 'HOW EFFECTIVE ARE AUSTRALIAN MENTAL HEALTH COUNSELLING SERVICES FOR WOMEN WITH POOR MENTAL HEALTH?', VALUE IN HEALTH (2014) [E3]
Co-authors Deborah Loxton, Julie Byles, Catherine Deste
2013 Dolja-Gore X, Byles J, Parkinson L, Young A, Pit S, 'Accuracy of self-reported medicines use compared to pharmaceutical claims data amongst a national sample of older Australian women', Open Journal of Epidemiology, 03 25-32 (2013) [C1]
DOI 10.4236/ojepi.2013.31005
Co-authors L Parkinson, Julie Byles
2013 Dolja-Gore X, Loxton D, D'Este C, Byles J, 'Trends in Mental health Service use for Australian Women.' (2013)
Co-authors Deborah Loxton, Catherine Deste, Julie Byles
2013 Holden L, Dobson A, Byles J, Loxton D, Dolja-Gore X, Hockey R, et al., 'Mental Health: Findings from the Australian Longitudinal Study on Women's Health', Department of Health and Ageing (2013)
Co-authors Julie Byles, Catherine Chojenta, Melissa Harris, Deborah Loxton
2012 Parkinson L, Dolja-Gore X, Robertson J, Doran E, Byles JE, 'Rofecoxib withdrawal and health outcomes for older Australian women', Abstracts. National Medicines Symposium 2012 (2012) [E3]
Co-authors L Parkinson, Julie Byles
2012 Dolja-Gore X, loxton D, Blythe F, Byles J, D'Este C, 'Other than psychological distress what factors are associated with using mental health services?' (2012)
Co-authors Julie Byles, Catherine Deste, Deborah Loxton
2012 Dolja-Gore X, Loxton D, D'Este C, Byles J, Blythe F, 'Other than psychological distress what factors are associated with using mental health services?' (2012)
Co-authors Deborah Loxton, Catherine Deste, Julie Byles
2011 Parkinson L, Dolja-Gore X, Gibson RE, Doran E, Notley L, Stewart Williams JA, et al., 'An observational study of the discrediting of COX-2 NSAIDs in Australia: Vioxx or class effect?', BMC Public Health, 11 892 (2011) [C1]
Citations Scopus - 2Web of Science - 1
Co-authors Julie Byles, L Parkinson, Jenny Stewartwilliams
2011 Byles JE, Dolja-Gore X, Loxton DJ, Parkinson L, Stewart Williams JA, 'Women's uptake of medicare benefits schedule mental health items for general practitioners, psychologists and other allied mental health professionals', Medical Journal of Australia, 194 175-179 (2011) [C1]
Citations Scopus - 11Web of Science - 12
Co-authors Deborah Loxton, L Parkinson, Julie Byles, Jenny Stewartwilliams
2011 Dolja-Gore X, Byles JE, Loxton DJ, Hockey RL, Dobson AJ, 'Increased bulk-billing for general practice consultations in regional and remote areas, 2002-2008', Medical Journal of Australia, 195 203-204 (2011) [C1]
Citations Scopus - 6Web of Science - 7
Co-authors Deborah Loxton, Julie Byles
2011 Dolja-Gore X, Parkinson L, Cunich M, Byles J, 'Out-Of-Hospital Medical Services Use By Older Australian Women With Arthritis.' (2011)
Co-authors L Parkinson, Julie Byles
2011 Dolja-Gore X, Parkinson L, Robertson J, Byles J, 'What do women take after their medication is discredited? A Case Study of Vioxx.' (2011)
Co-authors Julie Byles, L Parkinson
2011 Dolja-Gore X, Byles JE, Hockey R, 'Out-of-pocket-costs-for-medical-services', Posters - Abstracts. 11th National Rural Health Conference (2011) [E3]
Co-authors Julie Byles
2011 Byles JE, Dolja-Gore X, Powers JR, Loxton DJ, Dobson A, 'Pap tests and mammograms: Are there urban/rural differences in take-up in women?', Posters - Abstracts. 11th National Rural Health Conference (2011) [E3]
Co-authors Jenny Powers, Deborah Loxton, Julie Byles
2011 Dobson A, Byles J, Dolja-Gore X, Fitzgerald D, Hockey R, Loxton DJ, et al., 'Rural, remote and regional differences in women¿s health: Findings from the Australian Longitudinal Study on Women¿s Health', Australian Government Department of Health and Ageing, 134 (2011)
Co-authors Deborah Loxton, Julie Byles, Jenny Powers, Jane Rich
2010 Lowe J, Byles JE, Dolja-Gore X, Young AF, 'Does systematically organized care improve outcomes for women with diabetes?', Journal of Evaluation in Clinical Practice, 16 887-894 (2010) [C1]
DOI 10.1111/j.1365-2753.2009.01208.x
Citations Scopus - 7Web of Science - 5
Co-authors Julie Byles
2010 Dolja-Gore X, Parkinson L, 'Arthritis and depression: Tracking prevalence, impact and management in Older Women.' (2010)
Co-authors L Parkinson
2010 Dolja-Gore X, 'Using Data Linkage¿' (2010)
2010 Dolja-Gore X, Stewart Williams J, 'Data Linkage and Its Tricks' (2010)
Co-authors Jenny Stewartwilliams
2010 Dolja-Gore X, Robertson J, Hikmayani H, 'Elderly women with Diabetes: Cardiovascular Medication Use and Quality of Life' (2010)
2010 Hikmayani NH, Robertson J, Dolja-Gore X, 'Older women with diabetes: Cardiovascular medication use and quality of life', Value in Health (2010) [E3]
2008 Lowe J, Young AF, Dolja-Gore X, Byles JE, 'Cost of medications for older women', Australian and New Zealand Journal of Public Health, 32 89 (2008) [C1]
DOI 10.111/j.1753-6405.2008.00174.x
Citations Scopus - 5Web of Science - 5
Co-authors Julie Byles
2008 Dolja-Gore X, Loxton D, Byles J, 'Annual Health Assessments for Older Women' (2008)
Co-authors Julie Byles, Deborah Loxton
2008 Dolja-Gore X, Loxton D, Robertson J, 'Prescribed Medication use by Women Before, During and After Pregnancy.' (2008)
Co-authors Deborah Loxton
2008 Collins CE, Dolja-Gore X, Young AF, 'Lower diet quality is associated with health service usage cumulative medicare costs in mid-aged Australian women', 15th International Congress of Dietetics Abstract Book (2008) [E3]
Co-authors Clare Collins
2008 Dolja-Gore X, Byles J, Loxton D, Berecki J, Gibson R, Hockey R, et al., 'Use and costs of medications and other health care resources: Findings from the Australian Longitudinal Study on Women's Health', Department of health and Ageing (2008)
Co-authors L Parkinson, Julie Byles, Deborah Loxton, Jenny Powers
2007 Young AF, Dolja-Gore X, 'Access to health services for mid-aged women in rural Australia: Evidence of improvement?', Proceedings from The 9th National Rural Health Conference (2007) [E1]
2007 Young AF, Byles JE, Lowe J, Dolja-Gore X, 'Health care for women with diabetes living in rural areas', Proceedings of the 9th National Rural Health Conference (2007) [E1]
Co-authors Julie Byles
2006 Lowe J, Dolja-Gore X, Young A, Byles J, 'Patterns of care for older women in Australia with diabetes', Australian Diabtes Society Conference, Gold Cost, 23-25 August 2006 (2006)
Co-authors Julie Byles
2006 Young A, Lowe J, Byles J, Dolja-Gore X, 'Linking health-related databases to study the costs of health care for chronic disease.' (2006)
Co-authors Julie Byles
2006 Dolja-Gore X, Brown W, Byles J, Carrigan G, Dobson A, Gibson R, et al., 'Trends in women's health: Results from the ALSWH - priority conditions, risk factors and health behaviours', Department of Health and Ageing (2006)
Co-authors Julie Byles, Jenny Powers
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Grants and Funding

Summary

Number of grants 4
Total funding $345,323

Click on a grant title below to expand the full details for that specific grant.


20171 grants / $130,000

Health service use at the end of life by older Australian women with chronic conditions$130,000

Funding body: Department of Health

Funding body Department of Health
Project Team Professor Gita Mishra, Professor Annette Dobson, Doctor Michael Waller, Mr Richard Hockey, Professor Julie Byles, Doctor Xenia Dolja-Gore, Doctor Tazeen Majeed, Doctor Melissa Harris
Scheme Consultancy/Tender
Role Investigator
Funding Start 2017
Funding Finish 2017
GNo G1701041
Type Of Funding Other Public Sector - Commonwealth
Category 2OPC
UON Y

20151 grants / $204,898

Long term evaluation of uptake, impact and outcomes of the 75+ Health Assessment$204,898

Funding body: NHMRC (National Health & Medical Research Council)

Funding body NHMRC (National Health & Medical Research Council)
Project Team Professor Julie Byles, Doctor Xenia Dolja-Gore, Doctor Catherine Chojenta, Professor Kichu Nair, Doctor Meredith Tavener
Scheme Project Grant
Role Investigator
Funding Start 2015
Funding Finish 2016
GNo G1400038
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y

20111 grants / $4,950

Identifying the modifiable predictors of public and private acute hospital service utilisation and costs by women with single and multiple comorbid cnditions and associated risk factors$4,950

Funding body: The University of Newcastle

Funding body The University of Newcastle
Project Team

Professor Julie Byles

Scheme Centre of Health Record Linkage
Role Investigator
Funding Start 2011
Funding Finish 2012
GNo
Type Of Funding Other Public Sector - Local
Category 2OPL
UON N

20081 grants / $5,475

Risk factors for emergency and non-emergency caesarean births among women in NSW$5,475

To examine risk factors for Australian women who have either emergency and non-emergency caesarean births

Funding body: The University of Newcastle

Funding body The University of Newcastle
Project Team

Associate Professor Deborah Loxton

Scheme Centre of Health Record Linkage
Role Investigator
Funding Start 2008
Funding Finish 2010
GNo
Type Of Funding Other Public Sector - Local
Category 2OPL
UON N
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Research Supervision

Number of supervisions

Completed1
Current2

Total current UON EFTSL

PhD0.65

Current Supervision

Commenced Level of Study Research Title Program Supervisor Type
2017 PhD Factors Associated with Hospital-Based Adverse Events in Older Patients - A Retrospective Study of Australian Women PhD (Gender & Health), Faculty of Health and Medicine, The University of Newcastle Co-Supervisor
2017 PhD Understanding the Australian Women Hospital use Dynamics at the End of Life: The Australian Longitudinal Study on Women's Health PhD (Gender & Health), Faculty of Health and Medicine, The University of Newcastle Co-Supervisor

Past Supervision

Year Level of Study Research Title Program Supervisor Type
2009 Masters Cardiovascular Medication use and Health-Related Quality of life in Olderr Women with Diabetes Epidemiology, The University of Newcastle Co-Supervisor
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Research Collaborations

The map is a representation of a researchers co-authorship with collaborators across the globe. The map displays the number of publications against a country, where there is at least one co-author based in that country. Data is sourced from the University of Newcastle research publication management system (NURO) and may not fully represent the authors complete body of work.

Country Count of Publications
Australia 13
Canada 2
Indonesia 1
United States 1
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Dr Xenia Dolja-Gore

Position

Research Fellow
Research Centre for Generational Health and Ageing
Faculty of Health and Medicine

Focus area

Statistics

Contact Details

Email xenia.doljagore@newcastle.edu.au
Phone (02) 4042 0679
Fax (02) 4042 0044

Office

Room Level 4 - East Wing
Building HMRI Building
Location John Hunter Hospital Campus

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