Staff Profile

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Career Summary

Biography

Dr Ben Ewald completed his undergraduate training at the University of Newcastle in 1982, the then Family Medicine program training in 1992 and a masters in epidemiology in 1996. He worked as a GP  in Sydney, then for 10 years in Alice Springs. While at Congress, the Aboriginal medical service in Alice he saw for the first time a community health centre that could identify its community, and had a realistic involvement in their public health issues as well as the provision of sick care. In the Central Australian context with such a high disease burden it was glaringly obvious that access to primary care, and basing that care on effective treatments were areas that could benefit from applied epidemiology.

General practice research interests have included a study of the economics of ambulatory blood pressure monitoring, and the diagnostic accuracy of B Natriuretic Peptide for heart failure. He has also taken part in community wide physical activity research and from 2011 is running an RCT in physical activity promotion. He has a role in public health advocacy on  issues of environments to promote physical activity, and interpreting scholarship on environmental risks to health.

Now a GP in Newcastle, he teaches in the epidemiology masters program at the Centre for Clinical Epidemiology and Biostatistics at the University of Newcastle and co ordinates the communicable disease epidemiology and research protocol design subjects as well as teaching in the undergraduate medical course.

Current research directions include development of new analytic methods for data from accelerometers for use in physical activity research, bringing objective measurement of physical activity into clinical practice settings, and analysis of health system data to make cycling safer.

Ben Ewald

Qualifications

  • PhD (Community Medicine & Clinical Epidemiology), University of Newcastle, 01/08/2007
  • Bachelor of Medicine, University of Newcastle, 30/04/1983
  • Master of Medical Science (Epidemiology), University of Newcastle, 25/09/1998

Research

Research keywords

  • Meta analysis
  • Physical Activity
  • diagnostic test research

Research expertise

Diagnostic test research in the general practice setting.

Ambulatory blood pressure monitoring

B type natriuretic peptides

Diagnostic test meta analysis

Clinical epidemiologic methodology.

Physical activity and ageing.

Fields of Research

CodeDescriptionPercentage
110300Clinical Sciences65
010499Statistics Not Elsewhere Classified20
110899Medical Microbiology Not Elsewhere Classified15

Teaching

Teaching keywords

  • Environmental health
  • General Practice
  • Public Health
  • communicable Disease
  • epidemiology

Teaching expertise

Postgraduate epidemiology and research design.

Communicable disease epidemiology.

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Highlighted Publications

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

YearCitationAltmetricsLink
2006Ewald BD, 'Post hoc choice of cut points introduced bias to diagnostic research', Journal of Clinical Epidemiology, 59 798-801 (2006) [C1]

The paper describes a potential flaw in the design of diagnostic research, and should be heeded by any researcher validating a new diagnostic test. I am the sole author.

2002Ewald BD, Pekarsky B, 'Cost analysis of ambulatory blood pressure monitoring in initiating antihypertensive drug treatment in Australian general practice', Medical Journal of Australia, 176 580-583 (2002) [C1]

Publications

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

Click on a category title below to expand the list of citations for that specific category.

Chapter (1 outputs)

YearCitationAltmetricsLink
2011Ewald BD, 'B-type natriuretic peptide: A new diagnostic tool for congestive heart failure', Abnormal Laboratory Results, McGraw Hill, North Ryde, NSW 142-146 (2011) [B2]

Journal article (29 outputs)

YearCitationAltmetricsLink
2014Agho KE, Hall JJ, Ewald B, 'Determinants of the Knowledge of and Attitude towards Tuberculosis in Nigeria', Journal of Health, Population and Nutrition, 32 520-538 (2014)

Co-authors: John Hall

2013Magin P, Holliday S, Dunlop A, Ewald B, Dunbabin J, Henry J, et al., 'Discomfort sharing the general practice waiting room with mentally ill patients: a cross-sectional study', FAMILY PRACTICE, 30 190-196 (2013) [C1]
2012Holliday SM, Magin PJ, Dunbabin JS, Ewald BD, Henry J-M, Goode SM, et al., 'Waiting room ambience and provision of opioid substitution therapy in general practice', Medical Journal of Australia, 196 391-394 (2012) [C1]

Co-authors: Parker Magin

2012Wilson AJ, Robertson J, Ewald BD, Henry D, 'What the public learns about screening and diagnostic tests through the media', Medical Journal of Australia, 197 324-326 (2012) [C2]

Co-authors: Amanda Wilson

2011Tudor-Locke C, Craig CL, Aoyagi Y, Bell RC, Croteau KA, De Bourdeaudhuij I, et al., 'How many steps/day are enough? For older adults and special populations', International Journal of Behavioral Nutrition & Physical Activity, 8 80 (2011) [C1]
2011Ramsay EN, Roughead EE, Ewald BD, Pratt NL, Ryan P, 'A self-controlled case series to assess the effectiveness of beta blockers for heart failure in reducing hospitalisations in the elderly', BMC Medical Research Methodology, 11 1-7 (2011) [C1]
2010Schulzke SM, Pillow J, Ewald BD, Patole SK, 'Flow-cycled versus time-cycled synchronized ventilation for neonates', Cochrane Database of Systematic Reviews, CD008246 (2010) [C1]
2010Ewald BD, McEvoy MA, Attia JR, 'Pedometer counts superior to physical activity scale for identifying health markers in older adults', British Journal of Sports Medicine, 44 756-761 (2010) [C1]
2010Johnson NA, Inder KJ, Ewald BD, James EL, Bowe SJ, 'Association between participation in outpatient cardiac rehabilitation and self-reported receipt of lifestyle advice from a healthcare provider: Results of a population based cross-sectional survey', Rehabilitation Research and Practice, Article 541741 (2010) [C1]
2010McEvoy MA, Smith WT, D'Este CA, Duke JM, Peel R, Schofield PW, et al., 'Cohort Profile: The Hunter Community Study', International Journal of Epidemiology, 39 1452-1463 (2010) [C1]
2009Ewald DP, Eisman JA, Ewald BD, Winzenberg TM, Seibel MJ, Ebeling PR, et al., 'Population rates of bone densitometry use in Australia, 2001-2005, by sex and rural versus urban location', Medical Journal of Australia, 190 126-128 (2009) [C1]
2009Gow RM, Ewald BD, Lai L, Gardin L, Lougheed J, 'The Measurement of the QT and QTc on the neonatal and infant electrocardiogram: A comprehensive reliability assessment', Annals of Noninvasive Electrocardiology, 14 165-175 (2009) [C1]
2009Ewald BD, Duke JM, Thakkinstian A, Attia JR, Smith WT, 'Physical activity of older Australians measured by pedometry', Australasian Journal on Ageing, 28 127-133 (2009) [C1]
2008Ewald BD, Ewald D, Thakkinstian A, Attia JR, 'Meta-analysis of B type natriuretic peptide and N-terminal pro B natriuretic peptide in the diagnosis of clinical heart failure and population screening for left ventricular systolic dysfunction', Internal Medicine Journal, 38 101-113 (2008) [C1]
2008Ewald BD, Webb CE, Durrheim DN, Russell RC, 'Is there a risk of malaria transmission in NSW?', NSW Public Health Bulletin, 19 127-131 (2008) [C1]
2008Ewald BD, Durrheim DN, 'Australian Bat Lyssavirus: Examination of post-exposure treatment in NSW', NSW Public Health Bulletin, 19 104-107 (2008) [C1]
2008Ewald BD, 'Method of cut point selection biases diagnostic research', Internal Medicine Journal, 38 615 (2008) [C3]
2007Wylks CE, Ewald BD, Guest C, 'The epidemiology of pertussis in the Australian Capital Territory, 1999 to 2005: Epidemics of testing, disease or false positives?', Communicable Diseases Intelligence, 31 383-391 (2007) [C1]
2007Ewald BD, 'Erratum for 'Post hoc choice of cut points introduced bias to diagnostic research'', Journal of Clinical Epidemiology, 60 756 (2007) [C3]
2007Ewald B, 'Post hoc choice of cut points introduced bias to diagnostic research (vol 59, pg 798, 2006)', JOURNAL OF CLINICAL EPIDEMIOLOGY, 60 756-756 (2007)
2006Ewald BD, 'Post hoc choice of cut points introduced bias to diagnostic research', Journal of Clinical Epidemiology, 59 798-801 (2006) [C1]

The paper describes a potential flaw in the design of diagnostic research, and should be heeded by any researcher validating a new diagnostic test. I am the sole author.

2006Le TA, Sohn AH, Nguyen PT, Vo TC, Tran Nguyen TH, Ewald BD, Dibley MJ, 'Microbiology of surgical site infections and associated antimicrobial use among Vietnamese orthopedic and neurosurgical patients', Infection Control and Hospital Epidemiology, 27 855-862 (2006) [C1]
2005Thu LTA, Dibley MJ, Ewald BD, Tien NP, Lam LD, 'Incidence of surgical site infections and accompanying risk factors in Vietnamese orthopaedic patients', Journal of Hospital Infection, 60 360-367 (2005) [C1]
2004Ewald BD, Attia JR, 'Which test to detect microalbuminuria in diabetic patients?', Australian Family Physician, 33 565-568 (2004) [C1]

Co-authors: John Attia

2004Attia JR, Nair BR, Sibbritt DW, Ewald BD, Paget NS, Wellard RF, et al., 'Generating pre-test probabilities: a neglected area in clinical decision making', Medical Journal of Australia, 180 449-454 (2004) [C1]

Co-authors: John Attia

2003Ewald BD, 'B-type natriuretic peptide: a new diagnostic tool for congestive heart failure', Australian Prescriber, 26 64-65 (2003) [C2]
2002McElduff P, Attia JR, Ewald BD, Cockburn JD, Heller R, 'Estimating the contribution of individual risk factors to disease in a person with more than one risk factor', The Journal of Clinical Epidemiology, 55 588-592 (2002) [C1]

Co-authors: John Attia

2002Ewald BD, Pekarsky B, 'Cost analysis of ambulatory blood pressure monitoring in initiating antihypertensive drug treatment in Australian general practice', Medical Journal of Australia, 176 580-583 (2002) [C1]
2002Ewald BD, Pekarsky B, 'PBS/RPBS cost implications of trends and guideline recommendations in the pharmacological management of hypertension', MEDICAL JOURNAL OF AUSTRALIA, 176 189-190 (2002)
Show 26 more

Conference (11 outputs)

YearCitationAltmetricsLink
2012James EL, Ewald BD, Johnson NA, Brown W, Stacey FG, Plotnikoff RC, 'Efficacy of referral for physical activity counseling: Protocol for an RCT to compare face-to-face and telephone counselling', Journal of Science and Medicine in Sport, Sydney, Australia (2012) [E3]
2012Ewald BD, McElduff P, Attia JR, 'How many steps are enough? Dose response curves for objectively measured physical activity in an Australian community based sample', Journal of Science and Medicine in Sport, Sydney, Australia (2012) [E3]

Co-authors: John Attia

2011Ramsay E, Pratt NL, Roughead E, Ryan P, Ewald B, 'A Self-Controlled Case Series To Assess the Effectiveness of Beta Blockers for Heart Failure in Reducing Hospitalisations in the Elderly', PHARMACOEPIDEMIOLOGY AND DRUG SAFETY (2011) [E3]
2011Dunbabin JS, Holliday SM, Magin PJ, Dunlop AJ, Ewald BD, Goode SM, Henry J, 'Discomfort with mental illness in general practice waiting rooms: A cross-sectional study', 2011 PHC Research Conference Abstracts, Brisbane, QLD (2011) [E3]

Co-authors: Parker Magin

2010Holliday S, Magin P, Dunlop A, Ewald B, Henry J, Goode S, Dunbabin J, 'DOES PRESCRIBING OPIATE SUBSTITUTION THERAPY DISTRESS A GENERAL PRACTITIONER'S OTHER PATIENTS? A CROSS-SECTIONAL WAITING ROOM STUDY', DRUG AND ALCOHOL REVIEW (2010) [E3]
2010Holliday SM, Dunlop AJ, Magin PJ, Goode SM, Henry J, Dunbabin JS, Ewald BD, 'Does GP care of drug & alcohol patients cause distress to other patients? A cross-sectional waiting room study', 2010 Primary Health Care Research Conference: Program & Abstracts, Darwin, NT (2010) [E3]

Co-authors: Parker Magin

2010Holliday SM, Dunlop AJ, Magin PJ, Goode SM, Henry J, Dunbabin JS, Ewald BD, 'Patient experiences of GP waiting rooms: A cross-sectional study', GP10. Abstracts, Cairns, QLD (2010) [E3]

Co-authors: Parker Magin

2009Ewald DP, Eisman J, Ewald B, Winzenberg TM, Seibel MJ, Ebeling PR, et al., 'Bone densitometry Medicare claims suggest inadequate testing for Australian men and rural men and women', BONE, Sydney, AUSTRALIA (2009) [E1]
2009Ewald BD, 'Interpretation of step counts in population research', Journal of Science and Medicine in Sport, Brisbane, QLD (2009) [E3]
2009Ewald BD, James EL, Johnson NA, Paras LE, 'Efficacy of exercise physiologist counselling in primary care patients: A pilot study to determine feasibility and acceptability', Journal of Science and Medicine in Sport, Brisbane, QLD (2009) [E3]
2009Holliday SM, Dunlop AJ, Magin PJ, Ewald BD, Henry J, Goode SM, Dunbabin JS, 'The waiting room ambience in general practice (WRAP) study: Patients attitudes to aspects of their experience in GPs' waiting rooms', Drug and Alcohol Review, Darwin, NT (2009) [E3]
Show 8 more
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Grants and Funding

Summary

Number of grants7
Total funding$1,347,992

- Indicates that the researcher may be seeking students for this project.

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

2011 (2 grants)

Efficacy of exercise physiologist counselling in primary care patients: a RCT of two pragmatic approaches$896,589
Funding Body: NHMRC (National Health & Medical Research Council)

Project Team
Associate Professor Erica James, Doctor Benjamin Ewald, Doctor Natalie Johnson, Professor Ronald Plotnikoff
SchemeRole
Project GrantInvestigator
Total AmountFunding StartFunding Finish
$896,58920112013
GNo:G0190295

Physical Activity and Nutrition: The University of Newcastle's Approach Toward Better Population Health and Education$321,711
Funding Body: University of Newcastle

Project Team
Professor Ronald Plotnikoff, Professor Robin Callister, Professor Clare Collins, Doctor Benjamin Ewald, Professor Manohar Garg, Associate Professor Erica James, Associate Professor David Lubans, Professor Philip Morgan
SchemeRole
Priority Research CentreInvestigator
Total AmountFunding StartFunding Finish
$321,71120112015
GNo:G1100058

2009 (1 grants)

Be Active 09. Seventh national physical activity conference, Brisbane, 14-17 October 2009$1,258
Funding Body: University of Newcastle - Faculty of Health and Medicine

Project Team
Doctor Benjamin Ewald
SchemeRole
Travel GrantChief Investigator
Total AmountFunding StartFunding Finish
$1,25820092009
GNo:G0190438

2008 (2 grants)

GPs and Vitamin D deficiency: A survey of knowledge, attitudes and practices$24,615
Funding Body: Cancer Council NSW

Project Team
Associate Professor Billie Bonevski, Conjoint Professor Afaf Girgis, Doctor Benjamin Ewald, Conjoint Professor Bruce Armstrong
SchemeRole
Research GrantInvestigator
Total AmountFunding StartFunding Finish
$24,61520082008
GNo:G0189349

Pilot project to test recruitment and intervention for physical activity promotion RCT in general practice$10,097
Funding Body: University of Newcastle

Project Team
Doctor Benjamin Ewald
SchemeRole
Early Career Researcher GrantChief Investigator
Total AmountFunding StartFunding Finish
$10,09720082008
GNo:G0189265

2004 (1 grants)

Accuracy of a new blood test for B Naturietic Peptide in the diagnosis of congestive heart failure in general practice$73,722
Funding Body: NHMRC (National Health & Medical Research Council)

Project Team
Doctor Benjamin Ewald
SchemeRole
Scholarships - Public Health Postgraduate ResearchChief Investigator
Total AmountFunding StartFunding Finish
$73,72220042006
GNo:G0183994

2002 (1 grants)

Accuracy of a new blood test for B Natriuretic Peptide in the diagnosis of congestive heart failure in General practice patients.$20,000
Funding Body: Hunter Medical Research Institute

Project Team
Doctor Benjamin Ewald, Conjoint Associate Professor Julia Lowe
SchemeRole
Research GrantChief Investigator
Total AmountFunding StartFunding Finish
$20,00020022002
GNo:G0181187
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Research Supervision

Number of current supervisions0

For supervisions undertaken at an institution other that the University of Newcastle, the institution name is listed below the program name.

Past Supervision

YearProgramSupervisor TypeResearch Title
2005PhD (CommunityMed & ClinEpid)Co-SupervisorProspective Surveillance of Surgical Site Infections at a Tertiary Hospital in Viet Nam and the Impact of a Bedside Hand Sanitizer Program
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Dr Benjamin Ewald

Work Phone(02) 4042 0544
Fax(02)
Email
PositionSenior Lecturer
Centre for Clinical Epidemiology & Biostatistics
School of Medicine and Public Health
Faculty of Health and Medicine
The University of Newcastle, Australia
Focus AreaPublic Health
Office
HMRI level 4,
HMRI Building,
Other
URL:www.newcastle.edu.au/profile/ben-ewald