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Branko Kopjar photo

Branko Kopjar

Associate Professor, Health Systems and Population Health

206-221-3349 | brankok@uw.edu

Box 359455
4333 Brooklyn Ave NE, Rm 14-315, Seattle, WA 98195

Research Interests

Prevention effectiveness; outcomes research; comparative effectiveness; neurosurgery; orthopedics, biostatistics; quality of care; clinical trials

Bio

Dr. Kopjar joined the University of Washington in 1997 after serving as Head of the Section for Preventive Medicine at the Norwegian Institute for Public Health.

During his time at UW, he has taught courses in Epidemiology and Critical Evidence Appraisal, Health Program Evaluation, Biostatistics and Evidence-based Healthcare Policy. His research interests include: clinical trial design, evaluation of safety and effectiveness of investigational medical products, Real World Evidence (RWE) and outcomes research.

As of 2023, he is listed as an author or co-author on over 500 published original articles, reviews, technical reports and abstracts. He serves as a reviewer for various North American and European medical journals.

Dr. Kopjar’s work has been recognized with more than 30 honors including the 2005 John M. Eisenberg Article-of-the-Year award, 4 North American Spine Society (NASS) Best Paper awards, and the Outstanding Outcomes Research Award by the American Academy of Neurological Surgeons/Congress of Neurological Surgeons Joint Section on Disorders of the Spine and Peripheral Nerves.

In addition to his role at the University of Washington, Dr. Kopjar serves as an expert witness for U.S. and EU legal proceedings, and a consultant biostatistician to the Food and Drug Administration and various medical device, biotech and pharmaceutical companies.

Some of his previous roles include Vice Chairman of Research for AOSpine (part of the AO Foundation), Visiting Consultant to the National Health Service Royal Orthopaedic Hospital in Birmingham, U.K., and Visiting Professor to North American and global universities. He is an elected Fellow of American College of Epidemiology and of the European Academy for Translational Medicine.

From 2014 through 2019, Dr. Kopjar was Director of the University of Washington’s Executive Master of Public Health Program.

From 2014-2019, he served as Distinguished Professor, Department of Orthopaedic Surgery, Chongqing Medical University – one of the largest medical institutions in China.

To date, Dr. Kopjar has served as Principal Investigator, Co-Principal Investigator, Study Director or Lead Biostatistician on more than 100 clinical trials across various therapeutic areas including: infectious diseases, orthopaedics, cardiology, spinal cord injury, bariatric surgery and others. This includes numerous pivotal trials of medical devices in North America and abroad, various Phase 2 and Phase 3 drug studies, and several Post- Market Clinical Follow-up studies. He has participated in federally-funded projects administered through the U.S. Defense Department.

In the 2000’s, Dr. Kopjar served as adviser to two European health ministers.

Education

MD Family Medicine, GP, University of Zagreb (Croatia), 1987
PhD Epidemiology, University of Oslo (Norway), 1996
MS Biostatistics, University of Zagreb (Croatia), 1991

Academic Programs and Affiliations

Recent Publications (PubMed)

Better Functional Recovery After Single-Level Compared With Two-Level Posterolateral Lumbar Fusion.
Daffner SD, Bunch JT, Burton DC, Milam Iv RA, Park DK, Strenge KB, Whang PG, An HS, Kopjar B. Better Functional Recovery After Single-Level Compared With Two-Level Posterolateral Lumbar Fusion. Cureus. 2022 Mar 9;14(3):e23010. doi: 10.7759/cureus.23010. e
Using an asymmetric crosslinked polyethylene liner in primary total hip arthroplasty is associated with a lower risk of revision surgery : an analysis of the National Joint Registry.
Davis ET, Pagkalos J, Kopjar B. Using an asymmetric crosslinked polyethylene liner in primary total hip arthroplasty is associated with a lower risk of revision surgery : an analysis of the National Joint Registry. Bone Joint J. 2021 Sep;103-B(9):1479-148
Two-Year Clinical and Radiological Outcomes in Patients With Diabetes Undergoing Single-Level Anterior Cervical Discectomy and Fusion.
Arnold PM, Vaccaro AR, Sasso RC, Goulet B, Fehlings MG, Heary RF, Janssen ME, Kopjar B. Two-Year Clinical and Radiological Outcomes in Patients With Diabetes Undergoing Single-Level Anterior Cervical Discectomy and Fusion. Global Spine J. 2021 May;11(4):4
Mid-term outcomes of the R3â„¢ delta ceramic acetabular system in total hip arthroplasty.
Davis ET, Remes V, Virolainen P, Gebuhr P, Van Backlé B, Revell MP, Kopjar B. Mid-term outcomes of the R3™ delta ceramic acetabular system in total hip arthroplasty. J Orthop Surg Res. 2021 Jan 9;16(1):35. doi: 10.1186/s13018-020-02192-6.
Safety and efficacy of riluzole in patients undergoing decompressive surgery for degenerative cervical myelopathy (CSM-Protect): a multicentre, double-blind, placebo-controlled, randomised, phase 3 trial.
Fehlings MG, Badhiwala JH, Ahn H, Farhadi HF, Shaffrey CI, Nassr A, Mummaneni P, Arnold PM, Jacobs WB, Riew KD, Kelly M, Brodke DS, Vaccaro AR, Hilibrand AS, Wilson J, Harrop JS, Yoon ST, Kim KD, Fourney DR, Santaguida C, Massicotte EM, Kopjar B. Safety a
A higher degree of polyethylene irradiation is associated with a reduced risk of revision for aseptic loosening in total hip arthroplasties using cemented acetabular components: an analysis of 290,770 cases from the National Joint Registry of England, Wal
Davis ET, Pagkalos J, Kopjar B. A higher degree of polyethylene irradiation is associated with a reduced risk of revision for aseptic loosening in total hip arthroplasties using cemented acetabular components: an analysis of 290,770 cases from the Nationa
Effect of Bearing Surface on Survival of Cementless and Hybrid Total Hip Arthroplasty: Study of Data in the National Joint Registry for England, Wales, Northern Ireland and the Isle of Man.
Davis ET, Pagkalos J, Kopjar B. Effect of Bearing Surface on Survival of Cementless and Hybrid Total Hip Arthroplasty: Study of Data in the National Joint Registry for England, Wales, Northern Ireland and the Isle of Man. JB JS Open Access. 2020 May 15;5(
Errata.
Davis ET, Pagkalos J, Kopjar B. Errata. Bone Joint J. 2020 Mar;102-B(3):400. doi: 10.1302/0301-620X.102B3.BJJ-2019-00007.
Polyethylene manufacturing characteristics have a major effect on the risk of revision surgery in cementless and hybrid total hip arthroplasties.
Davis ET, Pagkalos J, Kopjar B. Polyethylene manufacturing characteristics have a major effect on the risk of revision surgery in cementless and hybrid total hip arthroplasties. Bone Joint J. 2020 Jan;102-B(1):90-101. doi: 10.1302/0301-620X.102B1.BJJ-2019
Is Preoperative Duration of Symptoms a Significant Predictor of Functional Outcomes in Patients Undergoing Surgery for the Treatment of Degenerative Cervical Myelopathy?
Tetreault L, Wilson JR, Kotter MRN, Côté P, Nouri A, Kopjar B, Arnold PM, Fehlings MG. Is Preoperative Duration of Symptoms a Significant Predictor of Functional Outcomes in Patients Undergoing Surgery for the Treatment of Degenerative Cervical Myelopathy

More Publications