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Topic · Sociology and Political Science

Delphi Technique in Research

Delphi Technique in Research is a research topic within Sociology and Political Science. Science Explorer counts 22k research works in it since 1950. 10.4% of them reached the world's top 10% most cited for their field and year.

This cluster of papers revolves around the Delphi Method, a research technique used for consensus building and expert opinions. It focuses on topics such as developing core outcome sets, healthcare quality indicators, systematic reviews, nominal group technique, and methodological guidelines for conducting Delphi studies.

  • Delphi Method
  • Consensus Building
  • Research Technique
  • Core Outcome Sets
  • Expert Opinions
  • Healthcare Quality Indicators
  • Systematic Review
  • Nominal Group Technique
  • Forecasting
  • Methodological Guidelines
Research works
22k
fractional, since 1950
In the world top 10%
2.3k
per year above
Top-10% rate
10.4%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+28%
the tick is no change
Largest producer
United States
29% of the 10 largest, 2022-now
Delphi Technique in Research

Which countries lead Delphi Technique in Research research?

By volume, the United States and the United Kingdom publish the most (1.1k and 718 works in 2022-now).

By volume, 2022-now

  1. 1 United States 1.1k works
  2. 2 United Kingdom 718 works
  3. 3 China 536 works
  4. 4 Australia 311 works
  5. 5 Canada 278 works
  6. 6 Germany 264 works
  7. 7 Spain 212 works
  8. 8 Netherlands 185 works
  9. 9 Italy 183 works
  10. 10 Japan 156 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

United States: 28.6%United Kingdom: 18.0%China: 13.4%Australia: 7.8%6 others listed: 32.1%29%largest
United States1,141 · 28.6%United Kingdom718 · 18.0%China536 · 13.4%Australia311 · 7.8%6 others listed1,279 · 32.1%

Shares of the rows listed above, not of the whole node.

Which institutions lead Delphi Technique in Research research?

By volume in 2022-now, Harvard University publishes the most Delphi Technique in Research research, followed by University of Toronto and University College London.

By volume, 2022-now

  1. 1 Harvard UniversityUnited States 42 works
  2. 2 University of TorontoCanada 38 works
  3. 3 University College LondonUnited Kingdom 33 works
  4. 4 The University of SydneyAustralia 27 works
  5. 5 Imperial College LondonUnited Kingdom 26 works
  6. 6 The University of MelbourneAustralia 26 works
  7. 7 University of North Carolina at Chapel HillUnited States 25 works
  8. 8 Johns Hopkins UniversityUnited States 24 works
  9. 9 University of CopenhagenDenmark 24 works
  10. 10 Sichuan UniversityChina 23 works

Who are the leading researchers in Delphi Technique in Research?

The most-cited researchers publishing on Delphi Technique in Research include David Moher, Douglas G. Altman and Jennifer Tetzlaff.

  1. 1 David Moher Canada 898k citations
  2. 2 Douglas G. Altman United Kingdom 862k citations
  3. 3 Jennifer Tetzlaff Canada 495k citations
  4. 4 Theo Vos United States 439k citations
  5. 5 George Davey Smith United Kingdom 435k citations
  6. 6 Julian P. T. Higgins United Kingdom 390k citations
  7. 7 Zulfiqar Ahmed Bhutta Pakistan 371k citations
  8. 8 Hermann Brenner Germany 343k citations
  9. 9 Cyrus Cooper United Kingdom 342k citations
  10. 10 Matthias Egger Switzerland 326k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Delphi Technique in Research?

The most cited paper in Delphi Technique in Research is "The PRISMA 2020 statement: an updated guideline for reporting systematic reviews" (Matthew James Page et al., 2021), with 105,915 citations. Next come "Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement" (83,711) and "PRISMA Extension for Scoping Reviews (PRISMA-ScR): Checklist and Explanation" (43,960).

Most cited papers
#PaperReleasedCitations
1 The PRISMA 2020 statement: an updated guideline for reporting systematic reviews Matthew James Page et al. · BMJ ReviewOpen access 29 Mar 2021 105,915
2 Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement David Moher, Alessandro Liberati, Jennifer Tetzlaff et al. · BMJ ReviewOpen access 21 Jul 2009 83,711
3 PRISMA Extension for Scoping Reviews (PRISMA-ScR): Checklist and Explanation Andrea C. Tricco et al. · Annals of Internal Medicine Open access 3 Sep 2018 43,960
4 RoB 2: a revised tool for assessing risk of bias in randomised trials Jonathan A C Sterne et al. · BMJ Open access 28 Aug 2019 33,250
5 Preferred reporting items for systematic review and meta-analysis protocols (PRISMA-P) 2015 statement PRISMA-P Group, David Moher, Larissa Shamseer et al. · Systematic Reviews ReviewOpen access 2015 27,092
All 89 most cited papers, with filters and sorting

Where is Delphi Technique in Research research done?

The largest centres of Delphi Technique in Research research in 2022-now are London (United Kingdom), Melbourne (Australia), Beijing (China) and Sydney (Australia). Among places with at least 20 works in it, it is an unusually large share of all research in Leicester, Southampton and Rotterdam.

Largest cities, 2022-now

  1. 1 LondonUnited Kingdom 199 works
  2. 2 MelbourneAustralia 89 works
  3. 3 BeijingChina 86 works
  4. 4 SydneyAustralia 60 works
  5. 5 TorontoCanada 58 works
  6. 6 MadridSpain 54 works
  7. 7 SeoulSouth Korea 54 works
  8. 8 ParisFrance 53 works
  9. 9 New YorkUnited States 52 works
  10. 10 GuangzhouChina 45 works

Where it is the local speciality

  1. LeicesterGB · 21.6 works7.8×
  2. SouthamptonGB · 21.9 works6.1×
  3. RotterdamNL · 22.4 works5.8×
  4. HamiltonCA · 20.1 works5.6×
  5. LiverpoolGB · 26.7 works5.6×
  6. GroningenNL · 23.4 works5.3×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Delphi Technique in Research than the world average.

See Delphi Technique in Research on the map

Where is the best place to study Delphi Technique in Research?

Among universities, judged by research, Harvard University, University of Ottawa and Imperial College London score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%10%20%mean 14.56%fractional works in this field (log) →share of work in the world top 10% →Harvard UniversityUniversity of OttawaImperial College Lon…University College L…
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Harvard UniversityUnited States 84.418.1%2.5×42 +11.3%
2University of OttawaCanada 79.816.6%5.7×20 +23.5%
3Imperial College LondonUnited Kingdom 73.215.0%5.0×26 +0.7%
4University College LondonUnited Kingdom 73.113.4%4.0×33 +24.6%
5University of SouthamptonUnited Kingdom 71.716.4%5.4×15 +31.1%
6University of LeicesterUnited Kingdom 71.514.9%10.6×15 +14.1%
7University of TorontoCanada 70.313.3%3.6×38 -3.4%
8The University of MelbourneAustralia 70.113.9%4.4×26 +46.8%
9University of CopenhagenDenmark 68.013.0%4.8×24 +32.6%
10University of GroningenNetherlands 67.411.0%5.8×21 +27.6%

Universities only. The score blends excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Delphi Technique in Research, country by country

Is Delphi Technique in Research research growing?

Output in 2022-2025 was 28% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Delphi Technique in Research.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Delphi Technique in Research as a percentage of every work published that year, 0.023% in 2024.

still counting0.010%0.020%0.030%Delphi Technique in Research0.029% in 202519801990200020102020

Fractional works of Delphi Technique in Research over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Delphi Technique in Research10.6% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

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