John Michael O’Brien
Impact in
- Obstetrics and Gynecology top 0.2%
- Pregnancy and preeclampsia studies
- Maternal and Perinatal Health Interventions
- Epidemiology top 1%
- Preterm Birth and Chorioamnionitis
Papers in
-
- Pregnancy and preeclampsia studies 14
- Gestational Diabetes Research and Management 9
- Maternal and Perinatal Health Interventions 5
- Epidemiology 39
- Preterm Birth and Chorioamnionitis 35
- Co-authors
- John Roger Barton (3 shared papers)Elvis S. Donaldson (1 shared paper)George W. Creasy (12 shared papers)John R. Barton (17 shared papers)Roberto J. Romero (6 shared papers)Eduardo Da Fonseca (6 shared papers)Sonia S. Hassan (6 shared papers)Elçin Çetingöz (6 shared papers)
- Journals
- American Journal of Obstetrics and Gynecology (45 papers)Ultrasound in Obstetrics and Gynecology (9 papers)American Journal of Perinatology (6 papers)Obstetrics and Gynecology (4 papers)Obstetrical & Gynecological Survey (2 papers)
- Partner nations
- United StatesUnited KingdomSouth Africa
In The Last Decade
John Michael O’Brien
101 papers receiving 5.0k citations
John Michael O’Brien's Hit Papers
Peers
Comparison fields: 5 of 162
- Obstetrics and Gynecology 1.3k
- Epidemiology 2.5k
- Pediatrics, Perinatology and Child Health 1.2k
- Public Health, Environmental and Occupational Health 1.6k
- Nutrition and Dietetics 227
Countries citing papers authored by John Michael O’Brien
This map shows the geographic impact of John Michael 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 Michael 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 Michael O’Brien more than expected).
Fields of papers citing papers by John Michael O’Brien
This network shows the impact of papers produced by John Michael 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 Michael O’Brien. The network helps show where John Michael O’Brien may publish in the future.
Co-authors
The 25 scholars most cited alongside John Michael 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 112 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | Dietary factors and low-grade inflammation in relation to overweight and obesity Hit paper breakdown → | 2011 | 873 |
| 2 | Vaginal progesterone reduces the rate of preterm birth in women with a sonographic short cervix: a multicenter, randomized, double‐blind, placebo‐controlled trial Hit paper breakdown → | 2011 | 672 |
| 3 | The management of placenta percreta: Conservative and operative strategies Hit paper breakdown → | 1996 | 471 |
| 4 | 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 | 438 |
| 5 | 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 | 346 |
| 6 | 2001 | 229 | |
| 7 | 2007 | 223 | |
| 8 | 2007 | 193 | |
| 9 | 2016 | 178 | |
| 10 | 2021 | 154 | |
| 11 | 2009 | 147 | |
| 12 | 2012 | 120 | |
| 13 | 2018 | 118 | |
| 14 | 2018 | 82 | |
| 15 | 2005 | 71 | |
| 16 | 2000 | 68 | |
| 17 | 1996 | 66 | |
| 18 | 2009 | 65 | |
| 19 | 2012 | 61 | |
| 20 | 2002 | 54 |
About John Michael O’Brien
John Michael O’Brien is a scholar working on Obstetrics and Gynecology, Epidemiology, Pediatrics, Perinatology and Child Health, Public Health, Environmental and Occupational Health and Rheumatology, having authored 112 papers that have together received 5.4k indexed citations. Recurring topics across this work include Preterm Birth and Chorioamnionitis (35 papers), Pregnancy and preeclampsia studies (14 papers), Gestational Diabetes Research and Management (9 papers), Pregnancy-related medical research (9 papers), Maternal and fetal healthcare (6 papers), Pregnancy and Medication Impact (5 papers), Maternal and Perinatal Health Interventions (5 papers) and Homelessness and Social Issues (4 papers). The work is most often cited by research in Obstetrics and Gynecology (1.3k citations), Epidemiology (2.5k citations), Pediatrics, Perinatology and Child Health (1.2k citations), Public Health, Environmental and Occupational Health (1.6k citations) and Nutrition and Dietetics (227 citations). John Michael O’Brien has collaborated with scholars based in United States, United Kingdom and South Africa. Frequent co-authors include John Roger Barton, Elvis S. Donaldson, George W. Creasy, John R. Barton, Roberto J. Romero, Eduardo Da Fonseca, Sonia S. Hassan, Elçin Çetingöz, Kypros H. Nicolaides and Agustín Conde‐Agudelo. Their work appears in journals such as American Journal of Obstetrics and Gynecology, Ultrasound in Obstetrics and Gynecology, American Journal of Perinatology, Obstetrics and Gynecology and Obstetrical & Gynecological Survey.
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.