William M. Callaghan

25.4k total citations · 14 hit papers
167 papers, 18.1k citations indexed

About

William M. Callaghan is a scholar working on Pediatrics, Perinatology and Child Health, Obstetrics and Gynecology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, William M. Callaghan has authored 167 papers receiving a total of 18.1k indexed citations (citations by other indexed papers that have themselves been cited), including 113 papers in Pediatrics, Perinatology and Child Health, 106 papers in Obstetrics and Gynecology and 33 papers in Public Health, Environmental and Occupational Health. Recurrent topics in William M. Callaghan's work include Maternal and fetal healthcare (68 papers), Maternal and Perinatal Health Interventions (62 papers) and Pregnancy and preeclampsia studies (46 papers). William M. Callaghan is often cited by papers focused on Maternal and fetal healthcare (68 papers), Maternal and Perinatal Health Interventions (62 papers) and Pregnancy and preeclampsia studies (46 papers). William M. Callaghan collaborates with scholars based in United States, Kenya and Uganda. William M. Callaghan's 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 and has published in prestigious journals such as New England Journal of Medicine, JAMA and PLoS ONE.

In The Last Decade

William M. Callaghan

165 papers receiving 17.3k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Maternal Obesity and Risk of Gestational Diabetes Mellitus

2007 807 citations William M. Callaghan, Lucinda J. England et al. profile →
Pregnancy-Related Mortality in the United States, 2011–2013

2017 699 citations Andreea A. Creanga, William M. Callaghan et al. Obstetrics and Gynecology profile →
Severe Maternal Morbidity Among Delivery and Postpartum Hospitalizations in the United States

2012 647 citations William M. Callaghan, Andreea A. Creanga et al. Obstetrics and Gynecology profile →
Racial/Ethnic Disparities in Pregnancy-Related Deaths — United States, 2007–2016

2019 569 citations Nicole L. Davis, David A. Goodman et al. MMWR Morbidity and Mortality Weekly Report profile →
Pregnancy-Related Mortality in the United States, 2006–2010

2014 567 citations Andreea A. Creanga, Cynthia J. Berg et al. Obstetrics and Gynecology profile →
Vital Signs: Pregnancy-Related Deaths, United States, 2011–2015, and Strategies for Prevention, 13 States, 2013–2017

2019 553 citations Nicole L. Davis, David A. Goodman et al. MMWR Morbidity and Mortality Weekly Report profile →
Trends in postpartum hemorrhage in high resource countries: a review and recommendations from the International Postpartum Hemorrhage Collaborative Group

2009 518 citations Marian Knight, William M. Callaghan et al. profile →
Opioid Use Disorder Documented at Delivery Hospitalization — United States, 1999–2014

2018 502 citations William M. Callaghan et al. MMWR Morbidity and Mortality Weekly Report profile →
Hypertensive Disorders and Severe Obstetric Morbidity in the United States

2009 461 citations Elena V. Kuklina, William M. Callaghan et al. Obstetrics and Gynecology profile →
Pregnancy-Related Mortality in the United States, 1998 to 2005

2010 439 citations Cynthia J. Berg, William M. Callaghan et al. Obstetrics and Gynecology profile →
Trends in postpartum hemorrhage: United States, 1994–2006

2010 369 citations William M. Callaghan, Elena V. Kuklina et al. American Journal of Obstetrics and Gynecology profile →
Development of a Comorbidity Index for Use in Obstetric Patients

2013 347 citations Brian T. Bateman, Jill M. Mhyre et al. Obstetrics and Gynecology profile →
Racial and ethnic disparities in severe maternal morbidity: a multistate analysis, 2008-2010

2013 329 citations Andreea A. Creanga, Brian T. Bateman et al. American Journal of Obstetrics and Gynecology profile →
Maternal Mortality and Morbidity in the United States: Where Are We Now?

2014 306 citations Andreea A. Creanga, Cynthia J. Berg et al. profile →

Peers

Countries citing papers authored by William M. Callaghan

Since Specialization

Citations

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

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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-authorship network of co-authors of William M. Callaghan

This figure shows the co-authorship network connecting the top 25 collaborators of William M. Callaghan. A scholar is included among the top collaborators of William M. Callaghan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with William M. Callaghan. William M. Callaghan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	Prenatal ultrasound use and risk of autism spectrum disorder: Findings from the case‐control Study to Explore Early Development 2023 ·Paediatric and Perinatal Epidemiology ·Deborah Christensen, Karen Pazol, (unknown), Lucinda J. England, (unknown), Lisa Croen, Nicole F. Dowling, Laura A. Schieve, Lin H. Tian, Sarah C. Tinker, Gayle C. Windham, William M. Callaghan, Stuart K. Shapira	1
2	Changing the conversation: applying a health equity framework to maternal mortality reviews 2019 ·American Journal of Obstetrics and Gynecology ·Michael R. Kramer, Andrea E. Strahan, (unknown), (unknown), (unknown), (unknown), Nicole L. Davis, David A. Goodman, William M. Callaghan	47
3	Proposed Diagnostic Criteria for the Case Definition of Amniotic Fluid Embolism in Research Studies 2017 ·Obstetric Anesthesia Digest ·(unknown), Rafael Romero, Gary A. Dildy, William M. Callaghan, Richard M. Smiley, Arthur Bracey, (unknown), Mary E. D’Alton, (unknown), (unknown), Rakesh B. Vadhera, James Herlihy, Richard L. Berkowitz, Michael A. Belfort	1
4	Perinatal regionalization: a geospatial view of perinatal critical care, United States, 2010–2013 2016 ·American Journal of Obstetrics and Gynecology ·Mary D. Brantley, Nicole L. Davis, David A. Goodman, William M. Callaghan, Wanda D. Barfield	51
5	Trends in Severe Maternal Morbidity After Assisted Reproductive Technology in the United States, 2008–2012 2015 ·Obstetrics and Gynecology ·(unknown), Michael Monsour, Dmitry M. Kissin, Denise J. Jamieson, William M. Callaghan, Sheree L. Boulet	70
6	Standardized Severe Maternal Morbidity Review 2014 ·Obstetrics and Gynecology ·Sarah J. Kilpatrick, Cynthia J. Berg, Peter S. Bernstein, Debra Bingham, Ana R. Delgado, William M. Callaghan, (unknown), (unknown), Jeanne Mahoney, Elliot Main, (unknown), (unknown), Thomas Westover, Margaret Harper	66
7	Performance of racial and ethnic minority-serving hospitals on delivery-related indicators 2014 ·American Journal of Obstetrics and Gynecology ·Andreea A. Creanga, Brian T. Bateman, Jill M. Mhyre, Elena V. Kuklina, (unknown), William M. Callaghan	93
8	Short Interpregnancy Interval Associated with Preterm Birth in US Adolescents 2014 ·Maternal and Child Health Journal ·Lina Nerlander, William M. Callaghan, Ruben Smith, Wanda D. Barfield	37
9	History of preterm birth and subsequent cardiovascular disease: a systematic review 2013 ·American Journal of Obstetrics and Gynecology ·Cheryl L. Robbins, (unknown), Patricia M. Dietz, Elena V. Kuklina, William M. Callaghan	99
10	Health Care Utilisation in the First Year of Life Among Infants of Mothers With Perinatal Depression or Anxiety 2012 ·Paediatric and Perinatal Epidemiology ·Sherry L. Farr, Patricia M. Dietz, Joanne Rizzo, Kimberly K. Vesco, William M. Callaghan, F. Carol Bruce, Joanna E. Bulkley, Mark C. Hornbrook, Cynthia J. Berg	45
11	Vital signs: teen pregnancy - United States, 1991-2009. 2011 ·MMWR Morbidity and Mortality Weekly Report ·Karen Pazol, (unknown), Loretta Gavin, William M. Callaghan, Alison M. Spitz, Judy E. Anderson, Wanda D. Barfield, Laura Kann	85
12	Attitudes and Practices of Obstetrician–Gynecologists Regarding Influenza Vaccination in Pregnancy 2011 ·Obstetrics and Gynecology ·Dmitry M. Kissin, Michael L. Power, Emily B. Kahn, Jennifer L. Williams, Denise J. Jamieson, Kitty MacFarlane, Jay Schulkin, Yujia Zhang, William M. Callaghan	62
13	Clinical Indications and Determinants of the Rise of Cesarean Section in Three Hospitals in Rural China 2011 ·Maternal and Child Health Journal ·(unknown), Min Zhou, William M. Callaghan, Samuel F. Posner, Jun Zhang, Cynthia J. Berg, Gengli Zhao	27
14	Trends in Postpartum Hemorrhage in High Resource Countries: A Review and Recommendations From the International Postpartum Hemorrhage Collaborative Group 2010 ·Obstetrical & Gynecological Survey ·Marian Knight, William M. Callaghan, Cynthia J. Berg, Sophie Alexander, Marie‐Hélène Bouvier‐Colle, Jane B. Ford, K.S. Joseph, Gwyneth Lewis, Robert M. Liston, Christine L. Roberts, Jeremy Oats, James J. Walker	11
15	Cardiomyopathy and Other Myocardial Disorders Among Hospitalizations for Pregnancy in the United States 2009 ·Obstetrics and Gynecology ·Elena V. Kuklina, William M. Callaghan	55
16	Health Concerns of Women and Infants in Times of Natural Disasters: Lessons Learned from Hurricane Katrina 2007 ·Maternal and Child Health Journal ·William M. Callaghan, Sonja A. Rasmussen, Denise J. Jamieson, Stephanie J. Ventura, Sherry L. Farr, Paul D Sutton, T J Mathews, Brady E Hamilton, Katherine R. Shealy, (unknown), Samuel F. Posner	118
17	Estimated Effect of 17 Alpha-Hydroxyprogesterone Caproate on Preterm Birth in the United States 2005 ·Obstetrics and Gynecology ·Joann Petrini, William M. Callaghan, Mark A. Klebanoff, Nancy Green, Eve Lackritz, Jennifer L. Howse, Richard H. Schwarz, Karla Damus	106
18	Accuracy of reporting maternal in‐hospital diagnoses and intrapartum procedures in Washington State linked birth records 2005 ·Paediatric and Perinatal Epidemiology ·Mona T. Lydon‐Rochelle, Victoria L. Holt, Jennifer C. Nelson, Vicky Cárdenas, Carolyn Gardella, Thomas R. Easterling, William M. Callaghan	180
19	Perinatal risk for mortality and mental retardation associated with maternal urinary-tract infections. 2001 ·PubMed ·Suzanne McDermott, (unknown), (unknown), (unknown), William M. Callaghan	44
20	Military Sea Transportation Service 1953 ·Naval War College review ·William M. Callaghan	0

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.

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