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Topic · Public Health, Environmental and Occupational Health

Pregnancy and Medication Impact

Pregnancy and Medication Impact is a research topic within Public Health, Environmental and Occupational Health. Science Explorer counts 25k research works in it since 1950. 10.1% of them reached the world's top 10% most cited for their field and year.

This cluster of papers explores the effects of medication, particularly immunosuppressive drugs, on pregnancy outcomes, focusing on conditions such as inflammatory bowel disease, rheumatoid arthritis, and asthma. It covers topics such as medication use during pregnancy, placental transfer of drugs, impact on birth outcomes, fertility, and teratogenicity. Additionally, it delves into the management of nausea and vomiting in pregnancy and the safety of various medications for both mother and fetus.

  • Pregnancy
  • Medication Use
  • Inflammatory Bowel Disease
  • Rheumatoid Arthritis
  • Birth Outcomes
  • Immunosuppressive Drugs
  • Fertility
  • Asthma Exacerbations
  • Teratogenicity
  • Nausea and Vomiting
Research works
25k
fractional, since 1950
In the world top 10%
2.5k
per year above
Top-10% rate
10.1%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+18%
the tick is no change
Largest producer
United States
34% of the 10 largest, 2022-now
Pregnancy and Medication Impact

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

Which countries lead Pregnancy and Medication Impact research?

By volume, the United States and China publish the most (1.3k and 699 works in 2022-now).

By volume, 2022-now

  1. 1 United States 1.3k works
  2. 2 China 699 works
  3. 3 United Kingdom 324 works
  4. 4 India 282 works
  5. 5 Canada 207 works
  6. 6 Germany 197 works
  7. 7 France 195 works
  8. 8 Indonesia 193 works
  9. 9 Türkiye 190 works
  10. 10 Japan 171 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: 34.1%China: 18.7%United Kingdom: 8.7%India: 7.6%6 others listed: 30.9%34%largest
United States1,272 · 34.1%China699 · 18.7%United Kingdom324 · 8.7%India282 · 7.6%6 others listed1,154 · 30.9%

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

Which institutions lead Pregnancy and Medication Impact research?

By volume in 2022-now, Harvard University publishes the most Pregnancy and Medication Impact research, followed by University of Toronto and University of North Carolina at Chapel Hill.

By volume, 2022-now

  1. 1 Harvard UniversityUnited States 60 works
  2. 2 University of TorontoCanada 43 works
  3. 3 University of North Carolina at Chapel HillUnited States 33 works
  4. 4 Sichuan UniversityChina 28 works
  5. 5 InsermFrance 27 works
  6. 6 Karolinska InstitutetSweden 26 works
  7. 7 Johns Hopkins UniversityUnited States 25 works
  8. 8 King's College LondonUnited Kingdom 24 works
  9. 9 Erasmus University RotterdamNetherlands 23 works
  10. 10 Université Paris CitéFrance 23 works

Who are the leading researchers in Pregnancy and Medication Impact?

The most-cited researchers publishing on Pregnancy and Medication Impact include George Davey Smith, Walter Churchill Willett and Zulfiqar Ahmed Bhutta.

  1. 1 George Davey Smith United Kingdom 435k citations
  2. 2 Walter Churchill Willett United States 411k citations
  3. 3 Zulfiqar Ahmed Bhutta Pakistan 371k citations
  4. 4 Hermann Brenner Germany 343k citations
  5. 5 Shizuo Akira Japan 342k citations
  6. 6 Cyrus Cooper United Kingdom 342k citations
  7. 7 Giuseppe Remuzzi Italy 328k citations
  8. 8 Gordon Henry Guyatt Canada 315k citations
  9. 9 Gregory Y.H. Lip United Kingdom 311k citations
  10. 10 Dan J. Stein South Africa 306k 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 Pregnancy and Medication Impact?

The most cited paper in Pregnancy and Medication Impact is "Worldwide incidence and prevalence of inflammatory bowel disease in the 21st century: a systematic review of population-based studies" (Siew C. Ng, Hai Yun Shi, Nima Hamidi et al., 2017), with 6,147 citations. Next come "Increasing Incidence and Prevalence of the Inflammatory Bowel Diseases With Time, Based on Systematic Review" (4,874) and "Clinical epidemiology of inflammatory bowel disease: incidence, prevalence, and environmental influences" (3,144).

Most cited papers
#PaperReleasedCitations
1 Worldwide incidence and prevalence of inflammatory bowel disease in the 21st century: a systematic review of population-based studies Siew C. Ng, Hai Yun Shi, Nima Hamidi et al. · The Lancet Review 16 Oct 2017 6,147
2 Increasing Incidence and Prevalence of the Inflammatory Bowel Diseases With Time, Based on Systematic Review Natalie A. Molodecky, Ing Shian Soon, Doreen M. Rabi et al. · Gastroenterology Review 17 Oct 2011 4,874
3 Clinical epidemiology of inflammatory bowel disease: incidence, prevalence, and environmental influences Edward V. Loftus · Gastroenterology May 2004 3,144
4 Guidelines of the American Thyroid Association for the Diagnosis and Management of Thyroid Disease During Pregnancy and Postpartum Alex Stagnaro‐Green, Marcos Abalovich, Erik Karl Alexander et al. · Thyroid Open access 25 Jul 2011 2,958
5 Latest Advances in Understanding Preeclampsia Christopher W.G. Redman, Ian L. Sargent · Science 9 Jun 2005 2,625
All 100 most cited papers, with filters and sorting

Where is Pregnancy and Medication Impact research done?

The largest centres of Pregnancy and Medication Impact research in 2022-now are London (United Kingdom), Paris (France), Beijing (China) and New York (United States). Among places with at least 20 works in it, it is an unusually large share of all research in Rotterdam.

Largest cities, 2022-now

  1. 1 LondonUnited Kingdom 121 works
  2. 2 ParisFrance 83 works
  3. 3 BeijingChina 76 works
  4. 4 New YorkUnited States 72 works
  5. 5 BostonUnited States 58 works
  6. 6 TokyoJapan 54 works
  7. 7 TorontoCanada 54 works
  8. 8 IstanbulTürkiye 52 works
  9. 9 MelbourneAustralia 49 works
  10. 10 ShanghaiChina 49 works

Where it is the local speciality

  1. RotterdamNL · 24.8 works6.6×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Pregnancy and Medication Impact than the world average.

See Pregnancy and Medication Impact on the map

Where is the best place to study Pregnancy and Medication Impact?

Among universities, judged by research, Karolinska Institutet, Harvard University and Aalborg University 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%30%mean 16.43%fractional works in this field (log) →share of work in the world top 10% →Aalborg UniversityKarolinska InstitutetErasmus University R…Harvard University
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 75.221.7%9.0×26 +0.8%
2Harvard UniversityUnited States 67.711.9%3.7×60 -7.7%
3Aalborg UniversityDenmark 64.827.5%3.3×10 +373.2%
4Erasmus University RotterdamNetherlands 64.014.8%8.8×24 -4.8%
5Monash UniversityAustralia 63.120.6%3.1×15 +45.8%
6University of TorontoCanada 60.410.2%4.1×43 -14.4%
7Johns Hopkins UniversityUnited States 58.513.8%3.2×25 +7.7%
8University of GroningenNetherlands 57.810.1%5.5×19 +76.0%
9King's College LondonUnited Kingdom 57.713.9%5.4×24 -1.3%
10Wuhan UniversityChina 57.319.8%2.1×16 +216.8%

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 Pregnancy and Medication Impact, country by country

Is Pregnancy and Medication Impact research growing?

Output in 2022-2025 was 18% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Pregnancy and Medication Impact.

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 Pregnancy and Medication Impact as a percentage of every work published that year, 0.023% in 2024.

still counting0.010%0.020%0.030%Pregnancy and Medication Impact0.024% in 202519801990200020102020

Fractional works of Pregnancy and Medication Impact 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%Pregnancy and Medication Impact10.4% 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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