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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 94 10435 9797 996 951 481 34742

Zarko Alfirevic publications per year

The chart shows the history of publications by Zarko Alfirevic between 1986 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Zarko Alfirevic published across 40 years, from 1986 to 2025, averaging 14 papers a year. Output peaked at 51 publications in 2016. 24 of the 560 publications appeared in the last two years.

No. of publications
10 20 30 40 50
Bar chart. Horizontal axis: year, 1986 to 2025. Vertical axis: number of publications, 0 to 51. Peak 51 publications in 2016. 1986: 1 publication 1987: 4 publications 1988: 2 publications 1989: 2 publications 1990: 3 publications 1991: 1 publication 1992: 0 publications 1993: 1 publication 1994: 2 publications 1995: 4 publications 1996: 3 publications 1997: 1 publication 1998: 5 publications 1999: 9 publications 2000: 11 publications 2001: 7 publications 2002: 5 publications 2003: 8 publications 2004: 8 publications 2005: 17 publications 2006: 18 publications 2007: 18 publications 2008: 25 publications 2009: 19 publications 2010: 25 publications 2011: 26 publications 2012: 21 publications 2013: 22 publications 2014: 34 publications 2015: 15 publications 2016: 51 publications 2017: 31 publications 2018: 25 publications 2019: 23 publications 2020: 15 publications 2021: 19 publications 2022: 14 publications 2023: 41 publications 2024: 15 publications 2025: 9 publications
1986 2025

560 publications in total across all disciplines

View publications per year as a table
Zarko Alfirevic: publications per year, 1986 to 2025
Year Publications
1986 1
1987 4
1988 2
1989 2
1990 3
1991 1
1992 0
1993 1
1994 2
1995 4
1996 3
1997 1
1998 5
1999 9
2000 11
2001 7
2002 5
2003 8
2004 8
2005 17
2006 18
2007 18
2008 25
2009 19
2010 25
2011 26
2012 21
2013 22
2014 34
2015 15
2016 51
2017 31
2018 25
2019 23
2020 15
2021 19
2022 14
2023 41
2024 15
2025 9
Total 560
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Zarko Alfirevic publications per year - data summary

  • Zarko Alfirevic, a Medicine scholar from University of Liverpool, has 560 publications recorded across 40 years, from 1986 to 2025.
  • The oldest publication on record dates to 1986 and the most recent to 2025.
  • The most productive year is 2016, with 51 publications.
  • The least productive years with any output are 1986, 1991, 1993 and 1997, with 1 publication each.
  • 1 of the 40 years in the span carries no publications at all (1992).
  • The rate of publication averages 14.0 papers per year over the whole span, or 14.4 per year counting only the 39 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 98 publications, 18% of the career total.
  • Split into equal eras - 1986-1999: 38 publications (2.7 per year); 2000-2013: 230 publications (16.4 per year); 2014-2025: 292 publications (24.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Zarko Alfirevic 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 Zarko Alfirevic 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, 481–500 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: 481 publications — 55th percentile

55% 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
481–500 713 481
501–520 617
521–540 610
541–560 537
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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Zarko Alfirevic publication distribution in Medicine in 2026 - data summary

  • The chart plots the publication count of all 20,134 Medicine scientists ranked by Research.com in 2026, grouped into 86 ranges running from 101–120 to 1,796+ publications.
  • Zarko Alfirevic, a Medicine scholar from University of Liverpool, records 481 publications - the 55th percentile of the discipline.
  • 55% of ranked Medicine scientists score the same or lower than Zarko Alfirevic, and about 45% score higher.
  • The median of the discipline falls in the 441–460 publications range, and Zarko Alfirevic ranks above the median.
  • The most crowded range is 341–360 publications, holding 922 scientists (5% of the field).
  • 64% of the field sits in the lowest quarter of the value range (up to 521–540 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,796 publications or more, 100 scientists in all (<1% of the field).

Zarko Alfirevic 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 Zarko Alfirevic 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, 94–95 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: 94 D-Index — 49th percentile

49% 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
86–87 960
88–89 970
90–91 922
92–93 839
94–95 808 94
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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Zarko Alfirevic D-index placement in Medicine in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 20,134 Medicine scientists ranked by Research.com in 2026, grouped into 75 ranges running from 70–71 to 217+ D-Index.
  • Zarko Alfirevic, a Medicine scholar from University of Liverpool, records 94 D-Index - the 49th percentile of the discipline.
  • 49% of ranked Medicine scientists score the same or lower than Zarko Alfirevic, and about 51% score higher.
  • The median of the discipline falls in the 94–95 D-Index range, and Zarko Alfirevic falls inside that same range.
  • The most crowded range is 82–83 D-Index, holding 1,027 scientists (5% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 106–107 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 217 D-Index or more, 98 scientists in all (<1% of the field).

Overview

Zarko Alfirevic is affiliated with the University of Liverpool in the United Kingdom and has contributed extensively to the field of medicine, with a focus on perinatology and obstetrics. Their research encompasses pediatrics, perinatology and child health, obstetrics and gynecology, surgery, public health, and epidemiology. The total number of publications attributed to them in medicine amounts to 195.

The scientist's main research topics include pregnancy and preeclampsia studies, preterm birth and chorioamnionitis, congenital anomalies and fetal surgery, prenatal screening and diagnostics, maternal and perinatal health interventions, birth development and health, and congenital diaphragmatic hernia studies.

  • Pregnancy and preeclampsia studies
  • Preterm Birth and Chorioamnionitis
  • Congenital Anomalies and Fetal Surgery
  • Prenatal Screening and Diagnostics
  • Maternal and Perinatal Health Interventions
  • Birth, Development, and Health
  • Congenital Diaphragmatic Hernia Studies

Alfirevic's publications have appeared frequently in venues such as BJOG An International Journal of Obstetrics & Gynaecology, bioRxiv (Cold Spring Harbor Laboratory), Ultrasound in Obstetrics and Gynecology, Cochrane Database of Systematic Reviews, and Obstetrical & Gynecological Survey.

  • BJOG An International Journal of Obstetrics & Gynaecology
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Ultrasound in Obstetrics and Gynecology
  • Cochrane Database of Systematic Reviews
  • Obstetrical & Gynecological Survey

The scientist has worked alongside several frequent co-authors, including Angharad Care, Laura Goodfellow, Suresh Seshadri, Jonathan Hyett, and Andrew Sharp. These collaborations indicate interdisciplinary work and a network within perinatal and obstetric research communities.

  • Angharad Care
  • Laura Goodfellow
  • Suresh Seshadri
  • Jonathan Hyett
  • Andrew Sharp

Notable recent papers by Zarko Alfirevic include:

  • "<scp>ISUOG</scp> Practice Guidelines (updated): performance of the routine mid-trimester fetal ultrasound scan" (2022) published in Ultrasound in Obstetrics and Gynecology
  • "Evaluating Progestogens for Preventing Preterm birth International Collaborative (EPPPIC): meta-analysis of individual participant data from randomised controlled trials" (2021) published in The Lancet
  • "Interventions to prevent spontaneous preterm birth in women with singleton pregnancy who are at high risk: systematic review and network meta-analysis" (2022) published in BMJ
  • "Amniocentesis and chorionic villus sampling" (2021) published in BJOG An International Journal of Obstetrics & Gynaecology
  • "Uterotonic agents for first-line treatment of postpartum haemorrhage: a network meta-analysis" (2020) published in Cochrane Database of Systematic Reviews

Best Publications

  • Continuous cardiotocography (CTG) as a form of electronic fetal monitoring (EFM) for fetal assessment during labour

    Zarko Alfirevic;Declan Devane;Gillian M.L. Gyte;Anna Cuthbert

  • Effect of early tranexamic acid administration on mortality, hysterectomy, and other morbidities in women with post-partum haemorrhage (WOMAN): an international, randomised, double-blind, placebo-controlled trial

    Haleema Shakur;Ian Roberts;Bukola Fawole;Rizwana Chaudhri

  • Practice guidelines for performance of the routine mid-trimester fetal ultrasound scan.

    L. J. Salomon;Z. Alfirevic;V. Berghella;C. Bilardo

  • Pain management for women in labour: an overview of systematic reviews.

    Leanne Jones;Mohammad Othman;Therese Dowswell;Zarko Alfirevic

  • Treatment for Primary Postpartum Haemorrhage

    Hatem A Mousa;Jennifer Blum;Ghada Abou El Senoun;Haleema Shakur

  • Fetal and umbilical Doppler ultrasound in high‐risk pregnancies

    Zarko Alfirevic;Tamara Stampalija;Therese Dowswell

  • Vaginal progesterone in women with an asymptomatic sonographic short cervix in the midtrimester decreases preterm delivery and neonatal morbidity: a systematic review and metaanalysis of individual patient data

    Roberto Romero;Kypros Nicolaides;Agustin Conde-Agudelo;Ann Tabor;Ann Tabor

  • Oral misoprostol for induction of labour

    Zarko Alfirevic;Nasreen Aflaifel;Andrew Weeks

  • Amniocentesis and chorionic villus sampling for prenatal diagnosis

    Zarko Alfirevic;Kate Navaratnam;Faris Mujezinovic

  • ISUOG practice guidelines: performance of first-trimester fetal ultrasound scan.

    Salomon Lj;Alfirevic Z;Bilardo Cm;Chalouhi Ge

  • Procedure-related complications of amniocentesis and chorionic villous sampling: a systematic review.

    Faris Mujezinovic;Zarko Alfirevic

  • Cervical cerclage for prevention of preterm delivery in woman with short cervix:randomised controlled trial

    Meekai S. To;Zarko Alfirevic;Victoria C. F. Heath;Simona Cicero

  • Effects of Gestational Age at Birth on Health Outcomes at 3 and 5 Years of Age: Population-based Cohort Study

    E.M. Boyle;G. Poulsen;D.J. Field;J.J. Kurinczuk

  • How strong is the association between maternal thrombophilia and adverse pregnancy outcome?: A systematic review

    Zarko Alfirevic;Devender Roberts;Vanessa Martlew

  • Update on procedure-related risks for prenatal diagnosis techniques.

    Ann Tabor;Zarko Alfirevic

  • Cervical stitch (cerclage) for preventing preterm birth in singleton pregnancy.

    Zarko Alfirevic;Tamara Stampalija;Nancy Medley

  • ISUOG Practice Guidelines: ultrasound assessment of fetal biometry and growth

    L.J. Salomon;Z. Alfirevic;F. Da Silva Costa;F. Da Silva Costa;R.L. Deter

  • Physiological changes of pregnancy and monitoring

    Andrew Carlin;Zarko Alfirevic

  • Doppler ultrasound for fetal assessment in high risk pregnancies

    J P Neilson;Z Alfirevic

  • Placenta Praevia and Placenta Accreta: Diagnosis and Management: Green-top Guideline No. 27a.

    Erm Jauniaux;Z Alfirevic;A G Bhide;M A Belfort

Frequent Co-Authors

Andrew Weeks
Andrew Weeks University of Liverpool
Paula R Williamson
Paula R Williamson University of Liverpool
Aris T. Papageorghiou
Aris T. Papageorghiou University of Oxford
Louise C. Kenny
Louise C. Kenny University of Liverpool
Asma Khalil
Asma Khalil St George's, University of London
Marian Knight
Marian Knight University of Oxford
Peter Brocklehurst
Peter Brocklehurst University of Birmingham
Philip N. Baker
Philip N. Baker University of Leicester
Diana Elbourne
Diana Elbourne London School of Hygiene & Tropical Medicine
G Justus Hofmeyr
G Justus Hofmeyr University of the Witwatersrand

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