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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 84 15082 14196 7614 7048 544 26205

David O. Okonkwo publications per year

The chart shows the history of publications by David O. Okonkwo between 1996 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. David O. Okonkwo published across 31 years, from 1996 to 2026, averaging 20.5 papers a year. Output peaked at 64 publications in 2021. 46 of the 637 publications appeared in the last two years.

No. of publications
20 40 60
Bar chart. Horizontal axis: year, 1996 to 2026. Vertical axis: number of publications, 0 to 64. Peak 64 publications in 2021. 1996: 1 publication 1997: 0 publications 1998: 1 publication 1999: 4 publications 2000: 1 publication 2001: 3 publications 2002: 2 publications 2003: 6 publications 2004: 6 publications 2005: 4 publications 2006: 5 publications 2007: 4 publications 2008: 8 publications 2009: 12 publications 2010: 15 publications 2011: 12 publications 2012: 16 publications 2013: 12 publications 2014: 23 publications 2015: 27 publications 2016: 39 publications 2017: 36 publications 2018: 46 publications 2019: 49 publications 2020: 38 publications 2021: 64 publications 2022: 60 publications 2023: 49 publications 2024: 48 publications 2025: 44 publications 2026: 2 publications
1996 2026

637 publications in total across all disciplines

View publications per year as a table
David O. Okonkwo: publications per year, 1996 to 2026
Year Publications
1996 1
1997 0
1998 1
1999 4
2000 1
2001 3
2002 2
2003 6
2004 6
2005 4
2006 5
2007 4
2008 8
2009 12
2010 15
2011 12
2012 16
2013 12
2014 23
2015 27
2016 39
2017 36
2018 46
2019 49
2020 38
2021 64
2022 60
2023 49
2024 48
2025 44
2026 2
Total 637
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David O. Okonkwo 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 David O. Okonkwo sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 86 bars. Horizontal axis: publications, 101–120 to 1,796+. Vertical axis: number of scientists, 0 to 922. Most scientists, 922, have 341–360 publications. The last bar groups every scientist with 1,796 publications or more. The highlighted bar, 541–560 publications, is where this scientist sits. 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: 610 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
101–120 publications 1,796+

This scientist: 544 publications — 65th percentile

65% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Medicine scientists by publication count, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
Publications Scientists This scientist
101–120 5
121–140 26
141–160 73
161–180 155
181–200 230
201–220 363
221–240 487
241–260 545
261–280 722
281–300 768
301–320 834
321–340 895
341–360 922
361–380 838
381–400 861
401–420 918
421–440 806
441–460 771
461–480 751
481–500 713
501–520 617
521–540 610
541–560 537 544
561–580 504
581–600 509
601–620 396
621–640 386
641–660 371
661–680 340
681–700 336
701–720 307
721–740 259
741–760 230
761–780 228
781–800 217
801–820 204
821–840 186
841–860 177
861–880 155
881–900 139
901–920 145
921–940 116
941–960 133
961–980 91
981–1,000 96
1,001–1,020 77
1,021–1,040 70
1,041–1,060 63
1,061–1,080 77
1,081–1,100 49
1,101–1,120 54
1,121–1,140 49
1,141–1,160 51
1,161–1,180 35
1,181–1,200 39
1,201–1,220 26
1,221–1,240 37
1,241–1,260 36
1,261–1,280 27
1,281–1,300 32
1,301–1,320 28
1,321–1,340 17
1,341–1,360 30
1,361–1,380 28
1,381–1,400 17
1,401–1,420 21
1,421–1,440 15
1,441–1,460 12
1,461–1,480 12
1,481–1,500 18
1,501–1,520 14
1,521–1,540 17
1,541–1,560 15
1,561–1,580 6
1,581–1,600 2
1,601–1,620 12
1,621–1,640 11
1,641–1,660 8
1,661–1,680 5
1,681–1,700 5
1,701–1,720 10
1,721–1,740 12
1,741–1,760 14
1,761–1,780 6
1,781–1,795 5
1,796+ 100
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David O. Okonkwo 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 David O. Okonkwo sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 75 bars. Horizontal axis: D-Index, 70–71 to 217+. Vertical axis: number of scientists, 0 to 1,027. Most scientists, 1,027, have 82–83 D-Index. The last bar groups every scientist with 217 D-Index or more. The highlighted bar, 84–85 D-Index, is where this scientist sits. 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: 399 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
70–71 D-Index 217+

This scientist: 84 D-Index — 27th percentile

27% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Medicine scientists by D-index, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
D-Index Scientists This scientist
70–71 226
72–73 391
74–75 574
76–77 730
78–79 891
80–81 972
82–83 1,027
84–85 1,003 84
86–87 960
88–89 970
90–91 922
92–93 839
94–95 808
96–97 779
98–99 668
100–101 611
102–103 630
104–105 513
106–107 541
108–109 445
110–111 429
112–113 399
114–115 393
116–117 318
118–119 302
120–121 287
122–123 255
124–125 256
126–127 252
128–129 230
130–131 179
132–133 168
134–135 163
136–137 159
138–139 134
140–141 134
142–143 118
144–145 109
146–147 106
148–149 74
150–151 79
152–153 80
154–155 87
156–157 57
158–159 74
160–161 69
162–163 60
164–165 53
166–167 39
168–169 42
170–171 32
172–173 39
174–175 40
176–177 28
178–179 19
180–181 23
182–183 31
184–185 18
186–187 20
188–189 22
190–191 13
192–193 21
194–195 12
196–197 12
198–199 14
200–201 15
202–203 13
204–205 10
206–207 8
208–209 4
210–211 12
212–213 11
214–215 10
216 4
217+ 98
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Overview

David O. Okonkwo is affiliated with the University of Pittsburgh in the United States. Their research primarily focuses on areas related to traumatic brain injury (TBI), spinal conditions, and emergency medicine. The breadth of their work spans various medical and surgical disciplines, with a particular emphasis on neurovascular disturbances and trauma care.

The main field of study for Okonkwo is Medicine, with significant contributions across several subfields including Surgery, Neurology, Epidemiology, Emergency Medicine, and Pathology and Forensic Medicine. These areas reflect the clinical and research scope of their investigations into acute and chronic neurological disorders.

Key topics covered in Okonkwo's publications include:

  • Traumatic Brain Injury and Neurovascular Disturbances
  • Traumatic Brain Injury Research
  • Spinal Fractures and Fixation Techniques
  • Spine and Intervertebral Disc Pathology
  • Scoliosis diagnosis and treatment
  • Trauma and Emergency Care Studies
  • Cardiac Arrest and Resuscitation

Okonkwo has a high volume of publications in specialized venues related to neurosurgery and spinal conditions. Frequent publication venues include:

  • Neurosurgery
  • Journal of Neurotrauma
  • The Spine Journal
  • Journal of Neurosurgery Spine
  • Spine

Among the recent published works involving Okonkwo's contributions are:

  • Traumatic brain injury: progress and challenges in prevention, clinical care, and research, 2022, The Lancet Neurology
  • A management algorithm for adult patients with both brain oxygen and intracranial pressure monitoring: the Seattle International Severe Traumatic Brain Injury Consensus Conference (SIBICC), 2020, Intensive Care Medicine
  • Functional Outcomes Over the First Year After Moderate to Severe Traumatic Brain Injury in the Prospective, Longitudinal TRACK-TBI Study, 2021, JAMA Neurology
  • Diagnosing Level of Consciousness: The Limits of the Glasgow Coma Scale Total Score, 2021, Journal of Neurotrauma
  • The evolution of white matter microstructural changes after mild traumatic brain injury: A longitudinal DTI and NODDI study, 2020, Science Advances

Frequent collaborators identified in Okonkwo's network include Ava M. Puccio, Geoffrey T. Manley, John K. Yue, Ramon Diaz-Arrastia, and Pratik Mukherjee. These coauthors have partnered on multiple publications, indicating active collaborative efforts within the field of traumatic brain injury and related areas.

Best Publications

  • Traumatic brain injury: integrated approaches to improve prevention, clinical care, and research

    Andrew I R Maas;David K Menon;P David Adelson;Nada Andelic

  • Very early hypothermia induction in patients with severe brain injury (the National Acute Brain Injury Study: Hypothermia II): a randomised trial

    Guy L Clifton;Alex Valadka;David Zygun;Christopher S Coffey;Christopher S Coffey

  • Symptomatology and Functional Outcome in Mild Traumatic Brain Injury: Results from the Prospective TRACK-TBI Study

    Paul McMahon;Paul McMahon;Allison Hricik;John K. Yue;Ava M. Puccio

  • Acute Biomarkers of Traumatic Brain Injury: Relationship between Plasma Levels of Ubiquitin C-Terminal Hydrolase-L1 and Glial Fibrillary Acidic Protein

    Ramon Diaz-Arrastia;Kevin K.W. Wang;Linda Papa;Marco D. Sorani

  • Magnetic resonance imaging improves 3-month outcome prediction in mild traumatic brain injury

    Esther L. Yuh;Pratik Mukherjee;Hester F. Lingsma;John K. Yue

  • Brain Oxygen Optimization in Severe Traumatic Brain Injury Phase-II: A Phase II Randomized Trial.

    David O. Okonkwo;Lori A. Shutter;Carol Moore;Nancy R. Temkin

  • Recovery After Mild Traumatic Brain Injury in Patients Presenting to US Level I Trauma Centers: A Transforming Research and Clinical Knowledge in Traumatic Brain Injury (TRACK-TBI) Study.

    Lindsay D. Nelson;Nancy R. Temkin;Sureyya Dikmen;Jason Barber

  • Serum GFAP and UCH-L1 for prediction of absence of intracranial injuries on head CT (ALERT-TBI): a multicentre observational study.

    Jeffrey J Bazarian;Peter Biberthaler;Robert D Welch;Lawrence M Lewis

  • A management algorithm for patients with intracranial pressure monitoring: the Seattle International Severe Traumatic Brain Injury Consensus Conference (SIBICC)

    Gregory W. J. Hawryluk;Sergio Aguilera;Andras Buki;Eileen Bulger

  • Cytochrome c Release and Caspase Activation in Traumatic Axonal Injury

    András Büki;David O. Okonkwo;Kevin K. W. Wang;John T. Povlishock

  • Transforming Research and Clinical Knowledge in Traumatic Brain Injury Pilot: Multicenter Implementation of the Common Data Elements for Traumatic Brain Injury

    John K. Yue;Mary J. Vassar;Hester F. Lingsma;Shelly R. Cooper

  • An intrathecal bolus of cyclosporin A before injury preserves mitochondrial integrity and attenuates axonal disruption in traumatic brain injury.

    David O. Okonkwo;John T. Povlishock

  • Recording, analysis, and interpretation of spreading depolarizations in neurointensive care: Review and recommendations of the COSBID research group

    Jens P. Dreier;Martin Fabricius;Cenk Ayata;Oliver W. Sakowitz

  • Complications and radiographic correction in adult scoliosis following combined transpsoas extreme lateral interbody fusion and posterior pedicle screw instrumentation.

    Matthew J Tormenti;Matthew B Maserati;Christopher M Bonfield;David O Okonkwo

  • Spreading depolarisations and outcome after traumatic brain injury: a prospective observational study

    Jed A. Hartings;M. Ross Bullock;David O. Okonkwo;Lilian S. Murray

  • Lipidomics identifies cardiolipin oxidation as a mitochondrial target for redox therapy of brain injury

    Jing Ji;Anthony E Kline;Andrew Amoscato;Alejandro K Samhan-Arias

  • A management algorithm for adult patients with both brain oxygen and intracranial pressure monitoring: the Seattle International Severe Traumatic Brain Injury Consensus Conference (SIBICC)

    Randall Chesnut;Sergio Aguilera;Andras Buki;Eileen Bulger

  • Diffusion Tensor Imaging for Outcome Prediction in Mild Traumatic Brain Injury: A TRACK-TBI Study

    Esther Lim Yuh;Shelly R. Cooper;Pratik Mukherjee;John K. Yue

  • Cerebral pressure autoregulation in traumatic brain injury.

    Leonardo Rangel-Castilla;Jaime Gasco;Haring J. W. Nauta;DaviD O. Okonkwo

  • Resting-state functional connectivity alterations associated with six-month outcomes in mild traumatic brain injury

    Eva M. Palacios;Esther L. Yuh;Esther L. Yuh;Yi Shin Chang;John K. Yue;John K. Yue

Frequent Co-Authors

Geoffrey T. Manley
Geoffrey T. Manley University of California, San Francisco
Pratik Mukherjee
Pratik Mukherjee University of California, San Francisco
Michael Wang
Michael Wang Argonne National Laboratory
Adam R. Ferguson
Adam R. Ferguson University of California, San Francisco
Praveen V. Mummaneni
Praveen V. Mummaneni University of California, San Francisco
Ramon Diaz-Arrastia
Ramon Diaz-Arrastia University of Pennsylvania
Hester F. Lingsma
Hester F. Lingsma Erasmus University Rotterdam
Kevin K. W. Wang
Kevin K. W. Wang Morehouse School of Medicine
David M. Schnyer
David M. Schnyer The University of Texas at Austin

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