William M. Callaghan
Impact in
- Obstetrics and Gynecology top 0.01%
- Gestational Diabetes Research and Management
- Pregnancy and preeclampsia studies
- Maternal and Perinatal Health Interventions
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- Maternal and fetal healthcare
- Birth, Development, and Health
- Global Maternal and Child Health
Papers in
-
- Maternal and fetal healthcare 53
- Global Maternal and Child Health 15
- Birth, Development, and Health 13
- Assisted Reproductive Technology and Twin Pregnancy 7
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- Maternal and Perinatal Health Interventions 28
- Gestational Diabetes Research and Management 24
- Pregnancy and preeclampsia studies 23
- Co-authors
- Cynthia J. Berg (40 shared papers)Elena V. Kuklina (26 shared papers)Andreea A. Creanga (21 shared papers)Patricia M. Dietz (34 shared papers)Carla Syverson (10 shared papers)Kristi Seed (7 shared papers)Lucinda J. England (19 shared papers)Susan Y. Chu (7 shared papers)
- Journals
- Obstetrics and Gynecology (34 papers)American Journal of Obstetrics and Gynecology (31 papers)Paediatric and Perinatal Epidemiology (10 papers)Maternal and Child Health Journal (10 papers)MMWR Morbidity and Mortality Weekly Report (7 papers)
- Partner nations
- United StatesUgandaKenya
In The Last Decade
William M. Callaghan
165 papers receiving 17.6k citations
William M. Callaghan's Hit Papers
Peers
Comparison fields: 5 of 161
- Obstetrics and Gynecology 6.8k
- Pediatrics, Perinatology and Child Health 7.3k
- Public Health, Environmental and Occupational Health 3.1k
- Emergency Medicine 663
- Cardiology and Cardiovascular Medicine 1.3k
Countries citing papers authored by William M. Callaghan
This map shows the geographic impact of William M. Callaghan'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 William M. Callaghan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites William M. Callaghan more than expected).
Fields of papers citing papers by William M. Callaghan
This network shows the impact of papers produced by William M. Callaghan. 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 William M. Callaghan. The network helps show where William M. Callaghan may publish in the future.
Co-authors
The 25 scholars most cited alongside William M. Callaghan, 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 167 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | Maternal Obesity and Risk of Gestational Diabetes Mellitus Hit paper breakdown → | 2007 | 812 |
| 2 | Pregnancy-Related Mortality in the United States, 2011–2013 Hit paper breakdown → | 2017 | 713 |
| 3 | Severe Maternal Morbidity Among Delivery and Postpartum Hospitalizations in the United States Hit paper breakdown → | 2012 | 656 |
| 4 | Racial/Ethnic Disparities in Pregnancy-Related Deaths — United States, 2007–2016 Hit paper breakdown → | 2019 | 593 |
| 5 | Vital Signs: Pregnancy-Related Deaths, United States, 2011–2015, and Strategies for Prevention, 13 States, 2013–2017 Hit paper breakdown → | 2019 | 577 |
| 6 | Pregnancy-Related Mortality in the United States, 2006–2010 Hit paper breakdown → | 2014 | 572 |
| 7 | Trends in postpartum hemorrhage in high resource countries: a review and recommendations from the International Postpartum Hemorrhage Collaborative Group Hit paper breakdown → | 2009 | 523 |
| 8 | Opioid Use Disorder Documented at Delivery Hospitalization — United States, 1999–2014 Hit paper breakdown → | 2018 | 517 |
| 9 | Hypertensive Disorders and Severe Obstetric Morbidity in the United States Hit paper breakdown → | 2009 | 468 |
| 10 | Pregnancy-Related Mortality in the United States, 1998 to 2005 Hit paper breakdown → | 2010 | 442 |
| 11 | 2006 | 397 | |
| 12 | Trends in postpartum hemorrhage: United States, 1994–2006 Hit paper breakdown → | 2010 | 373 |
| 13 | 2007 | 372 | |
| 14 | Development of a Comorbidity Index for Use in Obstetric Patients Hit paper breakdown → | 2013 | 356 |
| 15 | Racial and ethnic disparities in severe maternal morbidity: a multistate analysis, 2008-2010 Hit paper breakdown → | 2013 | 336 |
| 16 | 2005 | 335 | |
| 17 | 2007 | 323 | |
| 18 | 2007 | 314 | |
| 19 | Maternal Mortality and Morbidity in the United States: Where Are We Now? Hit paper breakdown → | 2014 | 308 |
| 20 | 2005 | 303 |
About William M. Callaghan
William M. Callaghan is a scholar working on Pediatrics, Perinatology and Child Health, Obstetrics and Gynecology, Public Health, Environmental and Occupational Health, Cardiology and Cardiovascular Medicine and Epidemiology, having authored 167 papers that have together received 18.3k indexed citations. Recurring topics across this work include Maternal and fetal healthcare (53 papers), Maternal and Perinatal Health Interventions (28 papers), Gestational Diabetes Research and Management (24 papers), Pregnancy and preeclampsia studies (23 papers), Global Maternal and Child Health (15 papers), Birth, Development, and Health (13 papers), Cardiovascular Issues in Pregnancy (9 papers) and Assisted Reproductive Technology and Twin Pregnancy (7 papers). The work is most often cited by research in Obstetrics and Gynecology (6.8k citations), Pediatrics, Perinatology and Child Health (7.3k citations), Public Health, Environmental and Occupational Health (3.1k citations), Emergency Medicine (663 citations) and Cardiology and Cardiovascular Medicine (1.3k citations). William M. Callaghan has collaborated with scholars based in United States, Uganda and Kenya. Frequent co-authors include Cynthia J. Berg, Elena V. Kuklina, Andreea A. Creanga, Patricia M. Dietz, Carla Syverson, Kristi Seed, Lucinda J. England, Susan Y. Chu, Brian T. Bateman and Shin Y. Kim. Their work appears in journals such as Obstetrics and Gynecology, American Journal of Obstetrics and Gynecology, Paediatric and Perinatal Epidemiology, Maternal and Child Health Journal and MMWR Morbidity and Mortality Weekly Report.
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.