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Topic · Epidemiology

Preterm Birth and Chorioamnionitis

Preterm Birth and Chorioamnionitis is a research topic within Epidemiology. Science Explorer counts 24k research works in it since 1950. 10.0% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the epidemiology, causes, and management of preterm birth. It covers topics such as the role of inflammation, progesterone, chorioamnionitis, and intrauterine infection in preterm delivery. Additionally, it explores the impact of preterm birth on neurodevelopmental outcomes and maternal mortality.

  • Preterm Birth
  • Inflammation
  • Progesterone
  • Chorioamnionitis
  • Neurodevelopmental Outcomes
  • Cervical Length
  • Intrauterine Infection
  • Maternal Mortality
  • Fetal Inflammatory Response Syndrome
  • Cytokines
Research works
24k
fractional, since 1950
In the world top 10%
2.4k
per year above
Top-10% rate
10.0%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+13%
the tick is no change
Largest producer
United States
29% of the 10 largest, 2022-now
Preterm Birth and Chorioamnionitis

This ranks research output and citation impact. It says nothing about the quality of diagnosis, treatment or care.

Which countries lead Preterm Birth and Chorioamnionitis research?

By volume, the United States and China publish the most (957 and 945 works in 2022-now).

By volume, 2022-now

  1. 1 United States 957 works
  2. 2 China 945 works
  3. 3 India 345 works
  4. 4 United Kingdom 254 works
  5. 5 Türkiye 187 works
  6. 6 Japan 145 works
  7. 7 Australia 142 works
  8. 8 Germany 131 works
  9. 9 Canada 126 works
  10. 10 France 110 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: 28.7%China: 28.3%India: 10.3%United Kingdom: 7.6%6 others listed: 25.2%29%largest
United States957 · 28.7%China945 · 28.3%India345 · 10.3%United Kingdom254 · 7.6%6 others listed840 · 25.2%

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

Which institutions lead Preterm Birth and Chorioamnionitis research?

By volume in 2022-now, Tel Aviv University publishes the most Preterm Birth and Chorioamnionitis research, followed by Shanghai Jiao Tong University and Zhejiang University.

By volume, 2022-now

  1. 1 Tel Aviv UniversityIsrael 34 works
  2. 2 Shanghai Jiao Tong UniversityChina 33 works
  3. 3 Zhejiang UniversityChina 31 works
  4. 4 Harvard UniversityUnited States 28 works
  5. 5 King's College LondonUnited Kingdom 27 works
  6. 6 Sichuan UniversityChina 26 works
  7. 7 University of TorontoCanada 25 works
  8. 8 Chongqing Medical UniversityChina 23 works
  9. 9 Sun Yat-sen UniversityChina 23 works
  10. 10 Peking UniversityChina 22 works

Who are the leading researchers in Preterm Birth and Chorioamnionitis?

The most-cited researchers publishing on Preterm Birth and Chorioamnionitis include Douglas G. Altman, George Davey Smith and Robert John Tibshirani.

  1. 1 Douglas G. Altman United Kingdom 862k citations
  2. 2 George Davey Smith United Kingdom 435k citations
  3. 3 Robert John Tibshirani United States 396k citations
  4. 4 Zulfiqar Ahmed Bhutta Pakistan 371k citations
  5. 5 Cyrus Cooper United Kingdom 342k citations
  6. 6 Jun Wang China 340k citations
  7. 7 John P. A. Ioannidis United States 317k citations
  8. 8 Lesley A. Stewart United Kingdom 308k citations
  9. 9 Frank B. Hu United States 281k citations
  10. 10 Yousef Saleh Khader Jordan 274k 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 Preterm Birth and Chorioamnionitis?

The most cited paper in Preterm Birth and Chorioamnionitis is "The “Golden Age” of Probiotics: A Systematic Review and Meta-Analysis of Randomized and Observational Studies in Preterm Infants" (Elda Dermyshi, Yizhong Wang, Chongbing Yan et al., 2017), with 24,491 citations. Next come "Epidemiology and causes of preterm birth" (7,914) and "National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications" (4,710).

Most cited papers
#PaperReleasedCitations
1 The “Golden Age” of Probiotics: A Systematic Review and Meta-Analysis of Randomized and Observational Studies in Preterm Infants Elda Dermyshi, Yizhong Wang, Chongbing Yan et al. · Neonatology Review 2017 24,491
2 Epidemiology and causes of preterm birth Robert L. Goldenberg, Jennifer Flatow Culhane, Jay D. Iams et al. · The Lancet Open access 2008 7,914
3 National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications Hannah K. Blencowe, Simon Cousens, Mikkel Z. Oestergaard et al. · The Lancet Jun 2012 4,710
4 Global, regional, and national estimates of levels of preterm birth in 2014: a systematic review and modelling analysis Saifon Chawanpaiboon, Joshua Peter Vogel, Ann‐Beth Moller et al. · The Lancet Global Health ReviewOpen access 30 Oct 2018 3,215
5 Antenatal corticosteroids for accelerating fetal lung maturation for women at risk of preterm birth Devender Roberts, Julie Brown, Nancy Medley et al. · Cochrane Database of Systematic Reviews Open access 20 Mar 2017 2,785
All 100 most cited papers, with filters and sorting

Where is Preterm Birth and Chorioamnionitis research done?

The largest centres of Preterm Birth and Chorioamnionitis research in 2022-now are London (United Kingdom), Beijing (China), Shanghai (China) and Guangzhou (China).

Largest cities, 2022-now

  1. 1 LondonUnited Kingdom 110 works
  2. 2 BeijingChina 86 works
  3. 3 ShanghaiChina 75 works
  4. 4 GuangzhouChina 73 works
  5. 5 SeoulSouth Korea 54 works
  6. 6 IstanbulTürkiye 54 works
  7. 7 HangzhouChina 51 works
  8. 8 ParisFrance 45 works
  9. 9 TokyoJapan 44 works
  10. 10 ChengduChina 44 works
See Preterm Birth and Chorioamnionitis on the map

Where is the best place to study Preterm Birth and Chorioamnionitis?

Among universities, judged by research, Karolinska Institutet, King's College London and University of Toronto 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 16.63%fractional works in this field (log) →share of work in the world top 10% →Karolinska InstitutetUniversity of TorontoUniversity of Liverp…King's College London
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
1Karolinska InstitutetSweden 76.122.2%6.0×16 +26.8%
2King's College LondonUnited Kingdom 75.016.5%6.8×28 +0.4%
3University of TorontoCanada 71.719.6%2.7×25 -20.9%
4University of LiverpoolUnited Kingdom 69.518.1%4.8×13 +47.8%
5Harvard UniversityUnited States 68.313.9%1.9×28 -16.8%
6Zhejiang UniversityChina 64.812.4%2.5×31 +163.7%
7The University of Texas Medical Branch at GalvestonUnited States 64.122.2%19.9×17 -19.1%
8Monash UniversityAustralia 63.318.6%3.4×16 +7.4%
9Shanghai Jiao Tong UniversityChina 62.48.7%2.5×33 +19.9%
10Sichuan UniversityChina 61.114.1%2.4×26 +88.1%

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 Preterm Birth and Chorioamnionitis, country by country

Is Preterm Birth and Chorioamnionitis research growing?

Output in 2022-2025 was 13% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Preterm Birth and Chorioamnionitis.

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 Preterm Birth and Chorioamnionitis as a percentage of every work published that year, 0.018% in 2024.

still counting0.010%0.020%0.030%Preterm Birth and Chorioamnionitis0.024% in 202519801990200020102020

Fractional works of Preterm Birth and Chorioamnionitis 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%Preterm Birth and Chorioamnionitis10.1% 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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