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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 83 15553 14634 32 30 387 26753

Robert Scragg publications per year

The chart shows the history of publications by Robert Scragg between 1977 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Robert Scragg published across 49 years, from 1977 to 2025, averaging 8.5 papers a year. Output peaked at 27 publications in 2007. 16 of the 417 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1977 to 2025. Vertical axis: number of publications, 0 to 27. Peak 27 publications in 2007. 1977: 2 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 2 publications 1982: 1 publication 1983: 0 publications 1984: 5 publications 1985: 3 publications 1986: 2 publications 1987: 2 publications 1988: 2 publications 1989: 2 publications 1990: 5 publications 1991: 7 publications 1992: 9 publications 1993: 15 publications 1994: 10 publications 1995: 13 publications 1996: 10 publications 1997: 6 publications 1998: 7 publications 1999: 7 publications 2000: 4 publications 2001: 5 publications 2002: 8 publications 2003: 5 publications 2004: 6 publications 2005: 7 publications 2006: 8 publications 2007: 27 publications 2008: 15 publications 2009: 11 publications 2010: 14 publications 2011: 13 publications 2012: 8 publications 2013: 13 publications 2014: 18 publications 2015: 9 publications 2016: 17 publications 2017: 23 publications 2018: 15 publications 2019: 26 publications 2020: 14 publications 2021: 11 publications 2022: 8 publications 2023: 6 publications 2024: 10 publications 2025: 6 publications
1977 2025

417 publications in total across all disciplines

View publications per year as a table
Robert Scragg: publications per year, 1977 to 2025
Year Publications
1977 2
1978 0
1979 0
1980 0
1981 2
1982 1
1983 0
1984 5
1985 3
1986 2
1987 2
1988 2
1989 2
1990 5
1991 7
1992 9
1993 15
1994 10
1995 13
1996 10
1997 6
1998 7
1999 7
2000 4
2001 5
2002 8
2003 5
2004 6
2005 7
2006 8
2007 27
2008 15
2009 11
2010 14
2011 13
2012 8
2013 13
2014 18
2015 9
2016 17
2017 23
2018 15
2019 26
2020 14
2021 11
2022 8
2023 6
2024 10
2025 6
Total 417
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Robert Scragg publications per year - data summary

  • Robert Scragg, a Medicine scholar from University of Auckland, has 417 publications recorded across 49 years, from 1977 to 2025.
  • The oldest publication on record dates to 1977 and the most recent to 2025.
  • The most productive year is 2007, with 27 publications.
  • The least productive year with any output is 1982, with 1 publication.
  • 4 of the 49 years in the span carry no publications at all (1978, 1979, 1980 and 1983).
  • The rate of publication averages 8.5 papers per year over the whole span, or 9.3 per year counting only the 45 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 41 publications, 10% of the career total.
  • Split into equal eras - 1977-1993: 57 publications (3.4 per year); 1994-2010: 163 publications (9.6 per year); 2011-2025: 197 publications (13.1 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Robert Scragg 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 Robert Scragg 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, 381–400 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: 387 publications — 36th percentile

36% 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
381–400 861 387
401–420 918
421–440 806
441–460 771
461–480 751
481–500 713
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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Robert Scragg 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.
  • Robert Scragg, a Medicine scholar from University of Auckland, records 387 publications - the 36th percentile of the discipline.
  • 36% of ranked Medicine scientists score the same or lower than Robert Scragg, and about 64% score higher.
  • The median of the discipline falls in the 441–460 publications range, and Robert Scragg ranks below 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).

Robert Scragg 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 Robert Scragg 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, 82–83 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: 83 D-Index — 24th percentile

24% 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 83
84–85 1,003
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
Download as CSV

Robert Scragg 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.
  • Robert Scragg, a Medicine scholar from University of Auckland, records 83 D-Index - the 24th percentile of the discipline.
  • 24% of ranked Medicine scientists score the same or lower than Robert Scragg, and about 76% score higher.
  • The median of the discipline falls in the 94–95 D-Index range, and Robert Scragg ranks below the median.
  • 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

Robert Scragg is a researcher affiliated with the University of Auckland in New Zealand. Their work primarily focuses on the field of Medicine, with a significant body of research dedicated to several subfields including Pathology and Forensic Medicine, Cardiology and Cardiovascular Medicine, Nutrition and Dietetics, Endocrinology, Diabetes and Metabolism, and Orthopedics and Sports Medicine.

The main topics of Robert Scragg's research include:

  • Vitamin D Research Studies
  • Vitamin C and Antioxidants Research
  • Cardiovascular Health and Disease Prevention
  • Bone health and osteoporosis research
  • Diabetes Management and Education
  • Blood Pressure and Hypertension Studies
  • Climate Change and Health Impacts

They have published extensively, with frequent publication venues consisting of:

  • The Journal of Steroid Biochemistry and Molecular Biology
  • The Journal of Clinical Endocrinology & Metabolism
  • JBMR Plus
  • The Lancet Diabetes & Endocrinology
  • bioRxiv (Cold Spring Harbor Laboratory)

Among their recent papers are:

  • Vitamin D supplementation to prevent acute respiratory infections: a systematic review and meta-analysis of aggregate data from randomised controlled trials, 2021, The Lancet Diabetes & Endocrinology
  • Vitamin D for the Prevention of Disease: An Endocrine Society Clinical Practice Guideline, 2024, The Journal of Clinical Endocrinology & Metabolism
  • Controversies in Vitamin D: A Statement From the Third International Conference, 2020, JBMR Plus
  • Vitamin D supplementation to prevent acute respiratory infections: systematic review and meta-analysis of aggregate data from randomised controlled trials, 2020, bioRxiv (Cold Spring Harbor Laboratory)
  • Postpancreatitis Diabetes Confers Higher Risk for Pancreatic Cancer Than Type 2 Diabetes: Results From a Nationwide Cancer Registry, 2020, Diabetes Care

Frequent collaborators of Robert Scragg include:

  • John Sluyter
  • Carlos A. Camargo
  • Zhenqiang Wu
  • Angela Beros
  • Debbie Waayer

Best Publications

  • Serum 25-Hydroxyvitamin D, Diabetes, and Ethnicity in the Third National Health and Nutrition Examination Survey

    Robert Scragg;MaryFran Sowers;Colin Bell

  • Relationship between serum 25-hydroxyvitamin d and pulmonary function in the third national health and nutrition examination survey.

    Peter N. Black;Robert Scragg

  • Serum 25-hydroxyvitamin D, ethnicity, and blood pressure in the Third National Health and Nutrition Examination Survey.

    Robert Scragg;MaryFran Sowers;Colin Bell

  • The urgent need to recommend an intake of vitamin D that is effective

    Reinhold Vieth;Heike Bischoff-Ferrari;Heike Bischoff-Ferrari;Barbara J Boucher;Bess Dawson-Hughes

  • Prospective study of serum 25-hydroxyvitamin D level, cardiovascular disease mortality, and all-cause mortality in older U.S. adults.

    Adit A. Ginde;Robert Scragg;Robert S. Schwartz;Carlos A. Camargo

  • Results from the first year of the New Zealand cot death study.

    E A Mitchell;R Scragg;A W Stewart;D M Becroft

  • Myocardial Infarction is Inversely Associated with Plasma 25-Hydroxyvitamin D3 Levels: A Community-Based Study

    Robert Scragg;Rodney Jackson;Ian M Holdaway;Thomas Lim

  • Effect of Monthly High-Dose Vitamin D Supplementation on Cardiovascular Disease in the Vitamin D Assessment Study : A Randomized Clinical Trial

    Robert Scragg;Alistair W. Stewart;Debbie Waayer;Carlene M. M. Lawes

  • Vitamin D supplementation to prevent acute respiratory infections: a systematic review and meta-analysis of aggregate data from randomised controlled trials.

    David A Jolliffe;Carlos A Camargo;John D Sluyter;Mary Aglipay

  • A case-control study of deaths from asthma.

    H H Rea;R Scragg;R Jackson;R Beaglehole

  • At-Home Breakfast Consumption among New Zealand Children: Associations with Body Mass Index and Related Nutrition Behaviors

    Jennifer Utter;Robert Scragg;Cliona Ni Mhurchu;David Schaaf

  • Serum 25-hydroxyvitamin D3 levels decreased in impaired glucose tolerance and diabetes mellitus

    Robert Scragg;Ian Holdaway;Vijay Singh;Patricia Metcalf

  • Bed sharing, smoking, and alcohol in the sudden infant death syndrome. New Zealand Cot Death Study Group.

    R. Scragg;E. A. Mitchell;B. J. Taylor;A. J. Stewart

  • Four modifiable and other major risk factors for cot death: The New Zealand study

    E. A. Mitchell;B. J. Taylor;R. P. K. Ford;A. W. Stewart

  • Effect of Vitamin D Supplementation on Blood Pressure: A Systematic Review and Meta-analysis Incorporating Individual Patient Data

    Louise A. Beveridge;Allan D. Struthers;Faisel Khan;Rolf Jorde

  • Rationale and plan for vitamin D food fortification: A review and guidance paper

    Stefan Pilz;Winfried März;Winfried März;Kevin D Cashman;Mairead Kiely

  • Smoking and the Sudden infant death syndrome

    E. A. Mitchell;R. P. K. Ford;A. W. Stewart;B. J. Taylor

  • 25-Hydroxyvitamin D, insulin resistance, and kidney function in the Third National Health and Nutrition Examination Survey

    M. Chonchol;R. Scragg

  • Social support for youth physical activity: Importance of siblings, parents, friends and school support across a segmented school day

    Maea Hohepa;Robert Scragg;Grant M Schofield;Gregory S Kolt;Gregory S Kolt

  • On the epidemiology of influenza

    John J Cannell;Michael Zasloff;Cedric F Garland;Robert Scragg

Frequent Co-Authors

Carlos A. Camargo
Carlos A. Camargo Harvard University
Kay-Tee Khaw
Kay-Tee Khaw University of Cambridge
Boyd Swinburn
Boyd Swinburn University of Auckland
Alun D. Hughes
Alun D. Hughes University College London
David Simmons
David Simmons Western Sydney University
David R. Murdoch
David R. Murdoch University of Otago
Richard McKenzie
Richard McKenzie National Institute of Water and Atmospheric Research
Sheila M. Williams
Sheila M. Williams University of Otago
Helena J. Teede
Helena J. Teede Monash University
Hans-Olov Adami
Hans-Olov Adami Karolinska Institute

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