Dr Natasha Weaver

Data Analyst

Research Services

Career Summary

Biography

Research Expertise

In my role as a Statistician for the School of Medicine and Public Health at the University of Newcastle I provided statistical support to researchers from Hunter Medical Research Institute working in various areas of public health research. Major projects included: Australian Rural Mental Health Study (5 year longitudinal study), GP diagnosis of dementia, Healthy Lifestyles (smoking intervention RCT for people with severe mental disorder), and a comparison study of ageing populations in the Western Pacific Region for the World Health Organisation. My background is in Pure Mathematics. My research explored a new connection between two different areas of pure mathematics: Dynamical Systems and Operator Algebras. There is an important connection between the study of dynamical systems called Markov shifts and the study of directed graphs. In my thesis I introduced a family of higher-rank graphs (the higher-dimensional analogues of directed graphs) that arise from 2-dimensional Markov shifts with algebraic properties. I then explored the operator algebras known as C*-algebras, which are associated to this family of graphs. In particular, the C*-algebras were shown to have nice properties following from aperiodicity of the underlying graphs.

Teaching Expertise
Currently assisting with teaching of Biostatistics A and Data Management and Computing postgraduate courses.

Administrative Expertise
Currently working as a Data Analyst for Research Services (Research Performance and Systems) in the Research Division. Reporting on research performance data.


Qualifications

  • Doctor of Philosophy, University of Newcastle
  • Bachelor of Mathematics, University of Newcastle
  • Bachelor of Mathematics (Honours), University of Newcastle

Keywords

  • Biostatistics
  • C*-algebra
  • Functional Analysis
  • Operator Algebra
  • Pure Mathematics
  • SAS
  • Stata
  • Statistics

Fields of Research

Code Description Percentage
010199 Pure Mathematics not elsewhere classified 50
111799 Public Health and Health Services not elsewhere classified 50

Professional Experience

UON Appointment

Title Organisation / Department
Casual Academic University of Newcastle
School of Medicine and Public Health
Australia

Academic appointment

Dates Title Organisation / Department
1/03/2012 - 1/02/2014 Statistician University of Newcastle
Hunter Medical Research Institute
Australia
1/08/2010 - 1/12/2012 Analyst

Operations Research

Defence Science and Technology Organisation
Land Operations Division
Australia
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Publications

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

Highlighted Publications

Year Citation Altmetrics Link
2009 Pask D, Raeburn I, Weaver NA, 'A family of 2-graphs arising from two-dimensional subshifts', Ergodic Theory and Dynamical Systems, 29 1613-1639 (2009) [C1]
DOI 10.1017/s0143385708000795
Citations Scopus - 7Web of Science - 6
2014 Inder KJ, Handley TE, Johnston A, Weaver N, Coleman C, Lewin TJ, et al., 'Determinants of suicidal ideation and suicide attempts: Parallel cross-sectional analyses examining geographical location', BMC Psychiatry, 14 (2014) [C1]

Background: Suicide death rates in Australia are higher in rural than urban communities however the contributors to this difference remain unclear. Geographical differences in sui... [more]

Background: Suicide death rates in Australia are higher in rural than urban communities however the contributors to this difference remain unclear. Geographical differences in suicidal ideation and attempts were explored using two datasets encompassing urban and rural community residents to examine associations between socioeconomic, demographic and mental health factors. Differing patterns of association between psychiatric disorder and suicidal ideation and attempts as geographical remoteness increased were investigated.Methods: Parallel cross-sectional analyses were undertaken using data from the 2007 National Survey of Mental Health and Wellbeing (2007-NSMHWB, n = 8,463), under-representative of remote and very remote residents, and selected participants from the Australian Rural Mental Health Study (ARMHS, n = 634), over-representative of remote and very remote residents. Uniform measures of suicidal ideation and attempts and mental disorder using the World Mental Health Composite International Diagnostic Interview (WMH-CIDI-3.0) were used in both datasets. Geographic region was classified into major cities, inner regional and other. A series of logistic regressions were undertaken for the outcomes of 12-month and lifetime suicidal ideation and lifetime suicide attempts, adjusting for age, gender and psychological distress. A sub-analysis of the ARMHS sample was undertaken with additional variables not available in the 2007-NSMHWB dataset.Results: Rates and determinants of suicidal ideation and suicide attempts across geographical region were similar. Psychiatric disorder was the main determinant of 12-month and lifetime suicidal ideation and lifetime suicide attempts across all geographical regions. For lifetime suicidal ideation and attempts, marital status, employment status, perceived financial adversity and mental health service use were also important determinants. In the ARMHS sub-analysis, higher optimism and better perceived infrastructure and service accessibility tended to be associated with a lower likelihood of lifetime suicidal ideation, when age, gender, psychological distress, marital status and mental health service use were taken into account.Conclusions: Rates and determinants of suicidal ideation and attempts did not differ according to geographical location. Psychiatric disorder, current distress, employment and financial adversity remain important factors associated with suicidal ideation and attempts across all regions in Australia. Regional characteristics that influence availability of services and lower personal optimism may also be associated with suicidal ideation in rural communities. © 2014 Inder et al.; licensee BioMed Central Ltd.

DOI 10.1186/1471-244X-14-208
Citations Scopus - 3Web of Science - 1
Co-authors Brian Kelly, Kerry Inder, Terry Lewin

Journal article (6 outputs)

Year Citation Altmetrics Link
2015 Baker AL, Richmond R, Kay-Lambkin FJ, Filia SL, Castle D, Williams JM, et al., 'Randomized Controlled Trial of a Healthy Lifestyle Intervention Among Smokers With Psychotic Disorders.', Nicotine Tob Res, 17 946-954 (2015)
DOI 10.1093/ntr/ntv039
Co-authors F Kaylambkin, Robin Callister, Amanda Baker, Terry Lewin
2014 Inder KJ, Handley TE, Johnston A, Weaver N, Coleman C, Lewin TJ, et al., 'Determinants of suicidal ideation and suicide attempts: Parallel cross-sectional analyses examining geographical location', BMC Psychiatry, 14 (2014) [C1]

Background: Suicide death rates in Australia are higher in rural than urban communities however the contributors to this difference remain unclear. Geographical differences in sui... [more]

Background: Suicide death rates in Australia are higher in rural than urban communities however the contributors to this difference remain unclear. Geographical differences in suicidal ideation and attempts were explored using two datasets encompassing urban and rural community residents to examine associations between socioeconomic, demographic and mental health factors. Differing patterns of association between psychiatric disorder and suicidal ideation and attempts as geographical remoteness increased were investigated.Methods: Parallel cross-sectional analyses were undertaken using data from the 2007 National Survey of Mental Health and Wellbeing (2007-NSMHWB, n = 8,463), under-representative of remote and very remote residents, and selected participants from the Australian Rural Mental Health Study (ARMHS, n = 634), over-representative of remote and very remote residents. Uniform measures of suicidal ideation and attempts and mental disorder using the World Mental Health Composite International Diagnostic Interview (WMH-CIDI-3.0) were used in both datasets. Geographic region was classified into major cities, inner regional and other. A series of logistic regressions were undertaken for the outcomes of 12-month and lifetime suicidal ideation and lifetime suicide attempts, adjusting for age, gender and psychological distress. A sub-analysis of the ARMHS sample was undertaken with additional variables not available in the 2007-NSMHWB dataset.Results: Rates and determinants of suicidal ideation and suicide attempts across geographical region were similar. Psychiatric disorder was the main determinant of 12-month and lifetime suicidal ideation and lifetime suicide attempts across all geographical regions. For lifetime suicidal ideation and attempts, marital status, employment status, perceived financial adversity and mental health service use were also important determinants. In the ARMHS sub-analysis, higher optimism and better perceived infrastructure and service accessibility tended to be associated with a lower likelihood of lifetime suicidal ideation, when age, gender, psychological distress, marital status and mental health service use were taken into account.Conclusions: Rates and determinants of suicidal ideation and attempts did not differ according to geographical location. Psychiatric disorder, current distress, employment and financial adversity remain important factors associated with suicidal ideation and attempts across all regions in Australia. Regional characteristics that influence availability of services and lower personal optimism may also be associated with suicidal ideation in rural communities. © 2014 Inder et al.; licensee BioMed Central Ltd.

DOI 10.1186/1471-244X-14-208
Citations Scopus - 3Web of Science - 1
Co-authors Brian Kelly, Kerry Inder, Terry Lewin
2014 Handley TE, Kay-Lambkin FJ, Inder KJ, Lewin TJ, Attia JR, Fuller J, et al., 'Self-reported contacts for mental health problems by rural residents: Predicted service needs, facilitators and barriers', BMC Psychiatry, 14 (2014) [C1]

Background: Rural and remote Australians face a range of barriers to mental health care, potentially limiting the extent to which current services and support networks may provide... [more]

Background: Rural and remote Australians face a range of barriers to mental health care, potentially limiting the extent to which current services and support networks may provide assistance. This paper examines self-reported mental health problems and contacts during the last 12¿months, and explores cross-sectional associations between potential facilitators/barriers and professional and non-professional help-seeking, while taking into account expected associations with socio-demographic and health-related factors. Methods: During the 3-year follow-up of the Australian Rural Mental Health Study (ARMHS) a self-report survey was completed by adult rural residents (N = 1,231; 61% female 77% married; 22% remote location; mean age = 59¿years), which examined socio-demographic characteristics, current health status factors, predicted service needs, self-reported professional and non-professional contacts for mental health problems in the last 12¿months, other aspects of help-seeking, and perceived barriers. Results: Professional contacts for mental health problems were reported by 18% of the sample (including 14% reporting General Practitioner contacts), while non-professional contacts were reported by 16% (including 14% reporting discussions with family/friends). Perceived barriers to health care fell under the domains of structural (e.g., costs, distance), attitudinal (e.g., stigma concerns, confidentiality), and time commitments. Participants with 12-month mental health problems who reported their needs as met had the highest levels of service use. Hierarchical logistic regressions revealed a dose-response relationship between the level of predicted need and the likelihood of reporting professional and non-professional contacts, together with associations with socio-demographic characteristics (e.g., gender, relationships, and financial circumstances), suicidal ideation, and attitudinal factors, but not geographical remoteness. Conclusions: Rates of self-reported mental health problems were consistent with baseline findings, including higher rural contact rates with General Practitioners. Structural barriers displayed mixed associations with help-seeking, while attitudinal barriers were consistently associated with lower service contacts. Developing appropriate interventions that address perceptions of mental illness and attitudes towards help-seeking is likely to be vital in optimising treatment access and mental health outcomes in rural areas.

DOI 10.1186/s12888-014-0249-0
Co-authors Terry Lewin, John Attia, F Kaylambkin, Brian Kelly, Kerry Inder
2013 Pond CD, Mate KE, Phillips J, Stocks NP, Magin PJ, Weaver N, Brodaty H, 'Predictors of agreement between general practitioner detection of dementia and the revised Cambridge Cognitive Assessment (CAMCOG-R)', INTERNATIONAL PSYCHOGERIATRICS, 25 1639-1647 (2013) [C1]
DOI 10.1017/S1041610213000884
Citations Web of Science - 1
Co-authors Karen Mate, Parker Magin, Dimity Pond
2010 Pask D, Raeburn I, Weaver NA, 'Periodic-2-graphs arising from subshifts', Bulletin of the Australian Mathematical Society, 82 120-138 (2010) [C1]
Citations Scopus - 1Web of Science - 1
2009 Pask D, Raeburn I, Weaver NA, 'A family of 2-graphs arising from two-dimensional subshifts', Ergodic Theory and Dynamical Systems, 29 1613-1639 (2009) [C1]
DOI 10.1017/s0143385708000795
Citations Scopus - 7Web of Science - 6
Show 3 more journal articles

Conference (1 outputs)

Year Citation Altmetrics Link
2012 Pond CD, Brodaty H, Stocks NP, Gunn J, Disler P, Paterson NE, et al., 'Improving general practitioner identification rates of dementia: The effectiveness of medical detailing plus audit', IPA 2012: International Psychigeriatric Association International Meeting Abstracts, Cairns (2012) [E3]
Co-authors Dimity Pond, Karen Mate, Parker Magin

Report (1 outputs)

Year Citation Altmetrics Link
2014 Byles JE, Curryer CA, Edwards N, Weaver N, D'Este C, Hall J, Kowal P, 'The health of older people in selected countries of the Western Pacific Region.', World Health Organisation, 54 (2014) [R1]
Co-authors John Hall, Catherine Deste, Julie Byles
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Dr Natasha Weaver

Positions

Data Analyst
Research Services Division
Research Services
Research and Innovation Division

Casual Academic
Research Services Division
School of Medicine and Public Health
Faculty of Health and Medicine

Contact Details

Email natasha.weaver@newcastle.edu.au
Phone (02) 49217188

Office

Room CH234
Building The Chancellery
Location Callaghan
University Drive
Callaghan, NSW 2308
Australia
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