Dr Benjamin Ewald

Work Phone	(02) 4042 0544
Fax	(02)
Email	Ben.Ewald@newcastle.edu.au
Office	HMRI level 4, Hmri Building

Highlighted Publications

Year	Citation	Link
2006	Ewald Benjamin David, '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.
2002	Ewald Benjamin David, Pekarsky Brita, '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 items published while at an institution other that the University of Newcastle, details are shown in italics.

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

Chapters In A Book (1 outputs)

Chapter in A2 Book (B2) (1 outputs)

Year	Citation	Link
2011	Ewald Benjamin David, '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 Articles (25 outputs)

Refereed Article in a Scholarly Journal (C1) (21 outputs)

Year	Citation	Link
2012	Holliday Simon M, Magin Parker John, Dunbabin Janet Sarah, Ewald Benjamin David, Henry Julie-Marie, Goode Susan May, Baker Frances Anne, Dunlop Adrian John, 'Waiting room ambience and provision of opioid substitution therapy in general practice', Medical Journal of Australia, 196 391-394 (2012) [C1]
2011	Ramsay Emmae N, Roughead Elizabeth E, Ewald Benjamin David, Pratt Nicole L, Ryan Philip, '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]
2011	Tudor-Locke Catrine, Craig Cora L, Aoyagi Yukitoshi, Bell Rhonda C, Croteau Karen A, De Bourdeaudhuij Ilse, Ewald Benjamin David, Gardner Andrew W, Hatano Yoshiro, Lutes Lesley D, Matsudo Sandra M, Ramirez-Marrero Farah A, Rogers Laura Q, Rowe David A, Schmidt Michael D, Tully Mark A, Blair Steven N, 'How many steps/day are enough? For older adults and special populations', International Journal of Behavioral Nutrition & Physical Activity, 8 80 (2011) [C1]
2010	Ewald Benjamin David, McEvoy Mark Anthony, Attia John Richard, 'Pedometer counts superior to physical activity scale for identifying health markers in older adults', British Journal of Sports Medicine, 44 756-761 (2010) [C1]
2010	Johnson Natalie A, Inder Kerry Jill, Ewald Benjamin David, James Erica Lyn, Bowe Steven John, '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]
2010	McEvoy Mark Anthony, Smith Wayne Trevor, D'Este Catherine Anne, Duke Janine Marie, Peel Roseanne, Schofield Peter William, Scott Rodney, Byles Julie Ellen, Henry David Alexander, Ewald Benjamin David, Hancock Stephen John, Smith Derek Richard, Attia John Richard, 'Cohort Profile: The Hunter Community Study', International Journal of Epidemiology, 39 1452-1463 (2010) [C1]
2010	Schulzke S M, Pillow J, Ewald Benjamin David, Patole S K, 'Flow-cycled versus time-cycled synchronized ventilation for neonates', Cochrane Database of Systematic Reviews CD008246 (2010) [C1]
2009	Ewald Dan P, Eisman John A, Ewald Benjamin David, Winzenberg Tania M, Seibel Markus J, Ebeling Peter R, Flicker Leon A, Nash Peter T, '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]
2009	Ewald Benjamin David, Duke Janine Marie, Thakkinstian Ammarin, Attia John Richard, Smith Wayne Trevor, 'Physical activity of older Australians measured by pedometry', Australasian Journal on Ageing, 28 127-133 (2009) [C1]
2009	Gow Robert M, Ewald Benjamin David, Lai Lillian, Gardin Letizia, Lougheed Jane, '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]
2008	Ewald Benjamin David, Durrheim David N, 'Australian Bat Lyssavirus: Examination of post-exposure treatment in NSW', NSW Public Health Bulletin, 19 104-107 (2008) [C1]
2008	Ewald Benjamin David, Ewald D, Thakkinstian Ammarin, Attia John Richard, '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]
2008	Ewald Benjamin David, Webb Cameron E, Durrheim David N, Russell Richard C, 'Is there a risk of malaria transmission in NSW?', NSW Public Health Bulletin, 19 127-131 (2008) [C1]
2007	Wylks Clare E, Ewald Benjamin David, Guest Charles, '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]
2006	Ewald Benjamin David, '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.
2006	Le T A, Sohn A H, Nguyen P T, Vo T C, Tran Nguyen T H, Ewald Benjamin David, Dibley Michael John, '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]
2005	Thu L T A, Dibley Michael John, Ewald Benjamin David, Tien N P, Lam L D, 'Incidence of surgical site infections and accompanying risk factors in Vietnamese orthopaedic patients', Journal of Hospital Infection, 60 360-367 (2005) [C1]
2004	Attia John Richard, Nair Balakrishnan R, Sibbritt David William, Ewald Benjamin David, Paget Neil S, Wellard Rod F, Patterson Lesley, Heller Richard Frederick, 'Generating pre-test probabilities: a neglected area in clinical decision making', Medical Journal of Australia, 180 449-454 (2004) [C1]
2004	Ewald Benjamin David, Attia John Richard, 'Which test to detect microalbuminuria in diabetic patients?', Australian Family Physician, 33 565-568 (2004) [C1]
2002	Ewald Benjamin David, Pekarsky Brita, '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]
2002	McElduff Patrick, Attia John Richard, Ewald Benjamin David, Cockburn Jill Deidre, 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]
Show 18 more

Non Refereed Article in a Scholarly Journal (C2) (2 outputs)

Year	Citation	Link
2012	Wilson Amanda Jane, Robertson Jane, Ewald Benjamin David, Henry David, 'What the public learns about screening and diagnostic tests through the media', Medical Journal of Australia, 197 324-326 (2012) [C2]
2003	Ewald Benjamin David, 'B-type natriuretic peptide: a new diagnostic tool for congestive heart failure', Australian Prescriber, 26 64-65 (2003) [C2]

Non Refereed Article in a Professional Journal (C3) (2 outputs)

Year	Citation	Link
2008	Ewald Benjamin David, 'Method of cut point selection biases diagnostic research', Internal Medicine Journal, 38 615 (2008) [C3]
2007	Ewald Benjamin David, 'Erratum for 'Post hoc choice of cut points introduced bias to diagnostic research'', Journal of Clinical Epidemiology, 60 756 (2007) [C3]

Conference Publication (8 outputs)

Extract of Paper (E3) (8 outputs)

Year	Citation	Link
2012	Ewald Benjamin David, McElduff Patrick, Attia John Richard, '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]
2012	James Erica Lyn, Ewald Benjamin David, Johnson Natalie Allison, Brown W, Stacey Fiona Gai, Plotnikoff Ronald Cyril, '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]
2011	Dunbabin Janet Sarah, Holliday Simon Mark, Magin Parker John, Dunlop Adrian John, Ewald Benjamin David, Goode Susan May, Henry Julie, 'Discomfort with mental illness in general practice waiting rooms: A cross-sectional study', 2011 PHC Research Conference Abstracts, Brisbane, QLD (2011) [E3]
2010	Holliday Simon Mark, Dunlop Adrian John, Magin Parker John, Goode Susan May, Henry Julie, Dunbabin Janet Sarah, Ewald Benjamin David, '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]
2010	Holliday Simon Mark, Dunlop Adrian John, Magin Parker John, Goode Susan May, Henry Julie, Dunbabin Janet Sarah, Ewald Benjamin David, 'Patient experiences of GP waiting rooms: A cross-sectional study', GP10. Abstracts, Cairns, QLD (2010) [E3]
2009	Ewald Benjamin David, 'Interpretation of step counts in population research', Journal of Science and Medicine in Sport, Brisbane, QLD (2009) [E3]
2009	Ewald Benjamin David, James Erica Lyn, Johnson Natalie Allison, Paras Lorraine Elizabeth, '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]
2009	Holliday Simon Mark, Dunlop Adrian John, Magin Parker John, Ewald Benjamin David, Henry Julie, Goode Susan May, Dunbabin Janet Sarah, '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 5 more

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