World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
99
Citations
49451
World Ranking
8441
National Ranking
327

J. David Spence publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where J. David Spence sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 635 publications — 75th percentile

75% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

J. David Spence D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where J. David Spence sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 99 D-Index — 58th percentile

58% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

J. David Spence is affiliated with the University of Western Ontario in Canada, with a primary research focus within the field of Medicine.

Their work is concentrated particularly in several subfields, including:

  • Cardiology and Cardiovascular Medicine
  • Pulmonary and Respiratory Medicine
  • Surgery
  • Rheumatology
  • Public Health, Environmental and Occupational Health

Spence's main research topics encompass:

  • Cerebrovascular and Carotid Artery Diseases
  • Cardiovascular Health and Disease Prevention
  • Blood Pressure and Hypertension Studies
  • Folate and B Vitamins Research
  • Nutritional Studies and Diet
  • Lipoproteins and Cardiovascular Health
  • Acute Ischemic Stroke Management

The scientist has published extensively in various venues, with frequent publications in:

  • Faculty Opinions - Post-Publication Peer Review of the Biomedical Literature
  • Atherosclerosis
  • Stroke
  • Ultrasound in Medicine & Biology
  • Hypertension

Some recent papers authored by Spence include:

  • "Mechanisms of Stroke in COVID-19" (2020), published in Cerebrovascular Diseases
  • "Supplemental Vitamins and Minerals for Cardiovascular Disease Prevention and Treatment" (2021), published in Journal of the American College of Cardiology (note: this paper's primary author is David J.A. Jenkins, but it is included among related recent works)
  • "Interaction of serum vitamin B 12 and folate with MTHFR genotypes on risk of ischemic stroke" (2020), published in Neurology (authored by Xianhui Qin)
  • "Deep Learning-Based Measurement of Total Plaque Area in B-Mode Ultrasound Images" (2021), published in IEEE Journal of Biomedical and Health Informatics (authored by Ran Zhou)
  • "A Voxel-Based Fully Convolution Network and Continuous Max-Flow for Carotid Vessel-Wall-Volume Segmentation From 3D Ultrasound Images" (2020), published in IEEE Transactions on Medical Imaging (authored by Ran Zhou)

Frequent co-authors collaborating with Spence include:

  • Mahmoud Reza Azarpazhooh
  • Yong Huo
  • Xiao Huang
  • Graeme J. Hankey
  • Xiaoshu Cheng

Best Publications

  • Benefit of carotid endarterectomy in patients with symptomatic moderate or severe stenosis. North American Symptomatic Carotid Endarterectomy Trial Collaborators.

    H J Barnett;D W Taylor;M Eliasziw;A J Fox

  • Lowering homocysteine in patients with ischemic stroke to prevent recurrent stroke, myocardial infarction, and death: the Vitamin Intervention for Stroke Prevention (VISP) randomized controlled trial.

    James F. Toole;M. René Malinow;Lloyd E. Chambless;J. David Spence

  • Atrial Fibrillation in Patients with Cryptogenic Stroke

    David J. Gladstone;Melanie Spring;Paul Dorian;Val Panzov

  • Pioglitazone after Ischemic Stroke or Transient Ischemic Attack

    W. N. Kernan;C. M. Viscoli;K. L. Furie;L. H. Young

  • Pharmacokinetic-Pharmacodynamic Consequences and Clinical Relevance of Cytochrome P450 3A4 Inhibition

    G K Dresser;J D Spence;D G Bailey

  • Patent Foramen Ovale Closure or Antiplatelet Therapy for Cryptogenic Stroke

    Lars Søndergaard;Scott E. Kasner;John F. Rhodes;Grethe Andersen

  • Grapefruit juice–drug interactions

    David G. Bailey;J. Malcolm;O. Arnold;J. David Spence

  • Interaction of citrus juices with felodipine and nifedipine.

    D. G. Bailey;J. D. Spence;C. Munoz;J. M. O. Arnold

  • Carotid Plaque Area A Tool for Targeting and Evaluating Vascular Preventive Therapy

    J. David Spence;Michael Eliasziw;Maria DiCicco;Daniel G. Hackam

  • Carotid endarterectomy—an evidence-based review: report of the Therapeutics and Technology Assessment Subcommittee of the American Academy of Neurology

    S. Chaturvedi;A. Bruno;T. Feasby;R. Holloway

  • Effects of lowering homocysteine levels with B vitamins on cardiovascular disease, cancer, and cause-specific mortality: Meta-analysis of 8 randomized trials involving 37 485 individuals.

    R Clarke;J Halsey;S Lewington;E Lonn

  • Low-dose and high-dose acetylsalicylic acid for patients undergoing carotid endarterectomy: a randomised controlled trial

    D Wayne Taylor;Henry Jm Barnett;R Brian Haynes;Gary G Ferguson

  • Psychological stress and the progression of carotid artery disease.

    Peter Barnett;J Spence;Stephen Manuck;J Jennings

  • Combining multiple approaches for the secondary prevention of vascular events after stroke: a quantitative modeling study.

    Daniel G. Hackam;J. David Spence

  • Effects of intensive medical therapy on microemboli and cardiovascular risk in asymptomatic carotid stenosis.

    J. David Spence;Victoria Coates;Hector Li;Arturo Tamayo

  • Geometry of the Carotid Bifurcation Predicts Its Exposure to Disturbed Flow

    Sang-Wook Lee;Luca Antiga;J. David Spence;David A. Steinman

  • HDL-cholesterol-raising effect of orange juice in subjects with hypercholesterolemia

    Elzbieta M Kurowska;J David Spence;John Jordan;Stephen Wetmore

  • Effects of folic acid supplementation on overall and site-specific cancer incidence during the randomised trials: Meta-analyses of data on 50 000 individuals

    Stein Emil Vollset;Robert Clarke;Sarah Lewington;Marta Ebbing

  • Socioeconomic status and stroke incidence, prevalence, mortality, and worldwide burden: an ecological analysis from the Global Burden of Disease Study 2017

    Abolfazl Avan;Hadi Digaleh;Mario Di Napoli;Saverio Stranges

  • Effect of B-Vitamin Therapy on Progression of Diabetic Nephropathy: A Randomized Controlled Trial

    Andrew A. House;Misha Eliasziw;Daniel C. Cattran;David N. Churchill

Frequent Co-Authors

Aaron Fenster
Aaron Fenster University of Western Ontario
Robert A. Hegele
Robert A. Hegele University of Western Ontario
Vladimir Hachinski
Vladimir Hachinski University of Western Ontario
Rob S. Beanlands
Rob S. Beanlands University of Ottawa
Jean-Claude Tardif
Jean-Claude Tardif Montreal Heart Institute
Meir J. Stampfer
Meir J. Stampfer Harvard University
David J.A. Jenkins
David J.A. Jenkins University of Toronto
Stewart B. Harris
Stewart B. Harris University of Western Ontario
Anthony J.G. Hanley
Anthony J.G. Hanley University of Toronto
Graeme J. Hankey
Graeme J. Hankey University of Western Australia

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