World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
91
Citations
39063
World Ranking
11589
National Ranking
5947

Karl Rickels 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 Karl Rickels 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: 496 publications — 57th percentile

57% of scientists in this discipline score the same or lower.

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

Karl Rickels 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 Karl Rickels 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: 91 D-Index — 43rd percentile

43% of scientists in this discipline score the same or lower.

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

Overview

Karl Rickels is affiliated with the University of Pennsylvania in the United States. Their research primarily focuses on multiple fields, including Medicine, Psychology, and Neuroscience. Within these disciplines, they have contributed notably to subfields such as Psychiatry and Mental Health, Experimental and Cognitive Psychology, Cognitive Neuroscience, and Surgery.

Their scholarly output includes studies addressing topics like Schizophrenia research and treatment, Sleep and related disorders, Sleep and Wakefulness Research, Epilepsy research and treatment, and Cardiovascular Syncope and Autonomic Disorders.

Karl Rickels has published in venues such as the Brazilian Journal of Psychiatry.

One of their recent papers is "The rise and fall and rise of benzodiazepines: a return of the stigmatized and repressed," published in 2020 in the Brazilian Journal of Psychiatry. This paper has been cited 50 times.

Their frequent co-authors include:

  • Richard Balon
  • Vladan Starčević
  • Edward Silberman
  • Fiammetta Cosci
  • Steven Dubovsky

Best Publications

  • Short form of depression inventory: cross-validation.

    Aaron T. Beck;William Y. Rial;Karl Rickels

  • Psychiatric illness in family practice.

    Peter T Hesbacher;K. Rickels;R. J. Morris;H. Newman

  • A comparison of two psychiatric screening tests.

    David Goldberg;Karl Rickels;Robert Downing;Peter Hesbacher

  • Antidepressants for the treatment of generalized anxiety disorder. A placebo-controlled comparison of imipramine, trazodone, and diazepam.

    Karl Rickels;Robert Downing;Edward Schweizer;Howard Hassman

  • Symptoms of Emotional Distress in a Family Planning Service: Stability over a Four-Week Period

    Andrew Winokur;Denise F. Winokur;Karl Rickels;Deborah S. Cox

  • Long-term Therapeutic Use of Benzodiazepines: I. Effects of Abrupt Discontinuation

    Karl Rickels;Edward Schweizer;W. George Case;David J. Greenblatt

  • Buspirone and diazepam in anxiety: a controlled study.

    K Rickels;K Weisman;N Norstad;M Singer

  • Pregabalin for Treatment of Generalized Anxiety Disorder: A 4-Week, Multicenter, Double-blind, Placebo-Controlled Trial of Pregabalin and Alprazolam

    Karl Rickels;Mark H. Pollack;Douglas E. Feltner;R. Bruce Lydiard

  • Placebo-Controlled Trial of Sertraline in the Treatment of Children With Generalized Anxiety Disorder

    Moira A. Rynn;Lynne Siqueland;Karl Rickels

  • Imipramine and Chlordiazepoxide in Depressive and Anxiety Disorders: II. Efficacy in Anxious Outpatients

    Richard J. Kahn;Douglas M. McNair;Ronald S. Lipman;Ronald S. Lipman;Lino Covi

  • Long-term Diazepam Therapy and Clinical Outcome

    Karl Rickels;W. George Case;Robert W. Downing;Andrew Winokur

  • Efficacy of extended-release venlafaxine in nondepressed outpatients with generalized anxiety disorder.

    K Rickels;M H Pollack;D V Sheehan;J T Haskins

  • L-methylfolate as adjunctive therapy for SSRI-resistant major depression: results of two randomized, double-blind, parallel-sequential trials.

    George I. Papakostas;Richard C. Shelton;John M. Zajecka;Bijan Etemad

  • Long-term Treatment of Anxiety and Risk of Withdrawal: Prospective Comparison of Clorazepate and Buspirone

    Karl Rickels;Edward Schweizer;Irma Csanalosi;W. George Case

  • Comparison of Alprazolam, Imipramine, and Placebo in the Treatment of Depression

    John P. Feighner;Gary C. Aden;Louis F. Fabre;Karl Rickels

  • The Hopkins Symptom Checklist. Assessing emotional distress in obstetric-gynecologic practice.

    Karl Rickels;Celso-Ramón Garćia;Ronald S. Lipman;Leonard R. Derogatis

  • Clinical effects of the 5-HT1A partial agonists in depression: a composite analysis of buspirone in the treatment of depression.

    Donald S. Robinson;Karl Rickels;John Feighner;Louis F. Fabre

  • A Double-blind Trial of Oral Progesterone, Alprazolam, and Placebo in Treatment of Severe Premenstrual Syndrome

    Ellen W. Freeman;Karl Rickels;Steven J. Sondheimer;Marcia Polansky

  • Differential Response to Antidepressants in Women With Premenstrual Syndrome/Premenstrual Dysphoric Disorder: A Randomized Controlled Trial

    Ellen W. Freeman;Karl Rickels;Steven J. Sondheimer;Marcia Polansky

  • Paroxetine Treatment of Generalized Anxiety Disorder: A Double-Blind, Placebo-Controlled Study

    Karl Rickels;Rocco Zaninelli;James McCafferty;Kevin Bellew

Frequent Co-Authors

Edward Schweizer
Edward Schweizer University of Pennsylvania
Ellen W. Freeman
Ellen W. Freeman University of Pennsylvania
Jay D. Amsterdam
Jay D. Amsterdam University of Pennsylvania
David J. Greenblatt
David J. Greenblatt Tufts University
Irwin Lucki
Irwin Lucki University of Pennsylvania
Giovanni A. Fava
Giovanni A. Fava University at Buffalo, State University of New York
Richard Balon
Richard Balon Wayne State University
Andrew Winokur
Andrew Winokur University of Connecticut Health Center
Fiammetta Cosci
Fiammetta Cosci University of Florence
Robert Gallop
Robert Gallop West Chester University

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