John O’Brien
Impact in
- Obstetrics and Gynecology top 0.5%
- Pregnancy and preeclampsia studies
- Maternal and Perinatal Health Interventions
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- Maternal and fetal healthcare
- Birth, Development, and Health
Papers in
- Epidemiology 30
- Preterm Birth and Chorioamnionitis 26
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- Pregnancy and preeclampsia studies 10
- Gestational Diabetes Research and Management 7
- Maternal and Perinatal Health Interventions 3
- Co-authors
- J R Barton (3 shared papers)Elvis S. Donaldson (1 shared paper)George W. Creasy (12 shared papers)John R. Barton (15 shared papers)Eduardo Da Fonseca (6 shared papers)Elçin Çetingöz (6 shared papers)Sonia S. Hassan (6 shared papers)K. H. Nicolaides (6 shared papers)
- Journals
- American Journal of Obstetrics and Gynecology (39 papers)American Journal of Perinatology (6 papers)Ultrasound in Obstetrics and Gynecology (6 papers)Trends in Food Science & Technology (3 papers)Obstetrics and Gynecology (2 papers)
- Partner nations
- United StatesUnited KingdomSouth Africa
In The Last Decade
John O’Brien
84 papers receiving 2.8k citations
John O’Brien's Hit Papers
Peers
Comparison fields: 5 of 143
- Obstetrics and Gynecology 970
- Pediatrics, Perinatology and Child Health 899
- Epidemiology 1.2k
- Public Health, Environmental and Occupational Health 789
- Management Science and Operations Research 103
Countries citing papers authored by John O’Brien
This map shows the geographic impact of John O’Brien's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John O’Brien with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John O’Brien more than expected).
Fields of papers citing papers by John O’Brien
This network shows the impact of papers produced by John O’Brien. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John O’Brien. The network helps show where John O’Brien may publish in the future.
Co-authors
The 25 scholars most cited alongside John O’Brien, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 95 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | The management of placenta percreta: Conservative and operative strategies Hit paper breakdown → | 1996 | 459 |
| 2 | 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 Hit paper breakdown → | 2011 | 412 |
| 3 | Vaginal progesterone for preventing preterm birth and adverse perinatal outcomes in singleton gestations with a short cervix: a meta-analysis of individual patient data Hit paper breakdown → | 2017 | 322 |
| 4 | 2001 | 226 | |
| 5 | 2016 | 164 | |
| 6 | 2009 | 152 | |
| 7 | 2012 | 116 | |
| 8 | 2018 | 111 | |
| 9 | 2005 | 71 | |
| 10 | 2000 | 68 | |
| 11 | 1996 | 65 | |
| 12 | 2009 | 63 | |
| 13 | 2012 | 56 | |
| 14 | 2002 | 54 | |
| 15 | Food microorganisms: Health benefits, safety evaluation and strains with documented history of use in foods | 2002 | 49 |
| 16 | 1995 | 40 | |
| 17 | 2011 | 36 | |
| 18 | 2002 | 33 | |
| 19 | 1995 | 31 | |
| 20 | 2002 | 30 |
About John O’Brien
John O’Brien is a scholar working on Epidemiology, Obstetrics and Gynecology, Public Health, Environmental and Occupational Health, Pediatrics, Perinatology and Child Health and General Health Professions, having authored 95 papers that have together received 3.0k indexed citations. Recurring topics across this work include Preterm Birth and Chorioamnionitis (26 papers), Pregnancy and preeclampsia studies (10 papers), Gestational Diabetes Research and Management (7 papers), Pregnancy-related medical research (6 papers), Maternal and fetal healthcare (5 papers), Prenatal Substance Exposure Effects (4 papers), Homelessness and Social Issues (4 papers) and Maternal and Perinatal Health Interventions (3 papers). The work is most often cited by research in Obstetrics and Gynecology (970 citations), Pediatrics, Perinatology and Child Health (899 citations), Epidemiology (1.2k citations), Public Health, Environmental and Occupational Health (789 citations) and Management Science and Operations Research (103 citations). John O’Brien has collaborated with scholars based in United States, United Kingdom and South Africa. Frequent co-authors include J R Barton, Elvis S. Donaldson, George W. Creasy, John R. Barton, Eduardo Da Fonseca, Elçin Çetingöz, Sonia S. Hassan, K. H. Nicolaides, Roberto Romero and Agustín Conde‐Agudelo. Their work appears in journals such as American Journal of Obstetrics and Gynecology, American Journal of Perinatology, Ultrasound in Obstetrics and Gynecology, Trends in Food Science & Technology and Obstetrics and Gynecology.
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.