John R. Shaffer

6.8k citations

154 papers · 5.1k · 1 hit paper · h-index 38

Impact in

Periodontics top 0.5%
- Dental Health and Care Utilization
- Oral microbiology and periodontitis research
Genetics top 1%
- Cleft Lip and Palate Research
- Genetic Associations and Epidemiology
- Forensic and Genetic Research

Papers in

Periodontics 29
- Dental Health and Care Utilization 21
- Oral microbiology and periodontitis research 8
Genetics 41
- Cleft Lip and Palate Research 21
- Genetic Associations and Epidemiology 18

Co-authors: Mary L. Marazita (79 shared papers)Eleanor Feingold (39 shared papers)Daniel W. McNeil (39 shared papers)Richard J. Crout (29 shared papers)Robert J. Weyant (28 shared papers)Seth Michael Weinberg (37 shared papers)Daniel E. Weeks (17 shared papers)Karen T. Cuenco (7 shared papers)
Journals: Journal of Dental Research (13 papers)PLoS Genetics (8 papers)Genetic Epidemiology (8 papers)BMC Oral Health (6 papers)Community Dentistry And Oral Epidemiology (6 papers)
Partner nations: United States Belgium United Kingdom

In The Last Decade

John R. Shaffer

148 papers receiving 5.0k citations

John R. Shaffer's Hit Papers

align trajectories log scale

Genome-wide analysis of dental caries and periodontitis combining clinical and self-reported data 2019 · 254 citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

2019 Nature Communications

Peers

Countries citing papers authored by John R. Shaffer

Since Specialization

Citations

This map shows the geographic impact of John R. Shaffer'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 R. Shaffer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John R. Shaffer more than expected).

Fields of papers citing papers by John R. Shaffer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John R. Shaffer. 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 R. Shaffer. The network helps show where John R. Shaffer may publish in the future.

Co-authors

The 25 scholars most cited alongside John R. Shaffer, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with John R. Shaffer Line = papers co-authored together John R. Shaffer links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 154 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Genome-wide analysis of dental caries and periodontitis combining clinical and self-reported data Nature Communications ·Dmitry Shungin, Simon J. Haworth, Kimon Divaris, Cary S. Agler, Yoichiro Kamatani, Myoung Keun Lee, Kelsey E. Grinde, George Hindy Hit paper breakdown →	2019	254
2	Genetic Diversity and Association Studies in US Hispanic/Latino Populations: Applications in the Hispanic Community Health Study/Study of Latinos The American Journal of Human Genetics ·Matthew P. Conomos, Cecelia A. Laurie, Adrienne M. Stilp, Stephanie M. Gogarten, Caitlin McHugh, Sarah C. Nelson, Tamar Sofer, Lindsay Fernandez-Rhodes	2016	253
3	Persistent Postmastectomy Pain in Breast Cancer Survivors: Analysis of Clinical, Demographic, and Psychosocial Factors Journal of Pain ·Inna Belfer, Kristin L. Schreiber, John R. Shaffer, Helen Shnol, Kayleigh Blaney, Alexandra Morando, Danielle Englert, Carol M. Greco	2013	180
4	Genome-wide mapping of global-to-local genetic effects on human facial shape Nature Genetics ·Peter D. Claes, Jasmien Roosenboom, Julie D. White, Tomek Swigut, Dzemila Sero, Myoung Keun Lee, Arslan A. Zaidi, Brooke C. Mattern	2018	177
5	A multi-ethnic genome-wide association study identifies novel loci for non-syndromic cleft lip with or without cleft palate on 2p24.2, 17q23 and 19q13 Human Molecular Genetics ·Elizabeth J. Leslie, Jenna C. Carlson, John R. Shaffer, Eleanor Feingold, George L. Wehby, Cecelia A. Laurie, Deepti Jain, Cathy C. Laurie	2016	171
6	Persistent pain in postmastectomy patients: Comparison of psychophysical, medical, surgical, and psychosocial characteristics between patients with and without pain Pain ·Kristin L. Schreiber, Marc Olivier Martel, Helen Shnol, John R. Shaffer, Carol M. Greco, Nicole Viray, Lauren N. Taylor, Meghan McLaughlin	2012	159
7	A Genome-wide Association Study of Nonsyndromic Cleft Palate Identifies an Etiologic Missense Variant in GRHL3 The American Journal of Human Genetics ·Elizabeth J. Leslie, Huan Liu, Jenna C. Carlson, John R. Shaffer, Eleanor Feingold, George L. Wehby, Cecelia A. Laurie, Deepti Jain	2016	141
8	Genome-wide meta-analyses of nonsyndromic orofacial clefts identify novel associations between FOXE1 and all orofacial clefts, and TP63 and cleft lip with or without cleft palate Human Genetics ·Elizabeth J. Leslie, Jenna C. Carlson, John R. Shaffer, Azeez Butali, Carmen J. Buxó, Eduardo Enrique Castilla, Kaare Christensen, Fred Deleyiannis	2017	138
9	Genome-Wide Association Study Reveals Multiple Loci Influencing Normal Human Facial Morphology PLoS Genetics ·John R. Shaffer, Ekaterina Orlova, Myoung Keun Lee, Elizabeth J. Leslie, Zachary D. Raffensperger, Carrie L. Heike, Michael L. Cunningham, Jacqueline T. Hecht	2016	125
10	Genes and Their Effects on Dental Caries May Differ between Primary and Permanent Dentitions Caries Research ·X. Wang, John R. Shaffer, Robert J. Weyant, Karen T. Cuenco, Rebecca DeSensi, Richard J. Crout, Daniel W. McNeil, Mary L. Marazita	2010	121
11	Insights into the genetic architecture of the human face Nature Genetics ·Julie D. White, Karlijne Indencleef, Sahin Naqvi, Ryan J. Eller, Hanne Hoskens, Jasmien Roosenboom, Myoung Keun Lee, Jaaved Mohammed	2020	114
12	Genome-wide analysis of BMI in adolescents and young adults reveals additional insight into the effects of genetic loci over the life course Human Molecular Genetics ·Mariaelisa Graff, Julius Suh Ngwa, Tsegaselassie Workalemahu, Georg Homuth, Sabine Schipf, Alexander Teumer, Henry Völzke, Henri Wallaschofski	2013	109
13	Association between Maternal Age and Meiotic Recombination for Trisomy 21 The American Journal of Human Genetics ·Neil E. Lamb, Kai Yu, John R. Shaffer, Eleanor Feingold, Stephanie L. Sherman	2004	105
14	Which missing value imputation method to use in expression profiles: a comparative study and two selection schemes BMC Bioinformatics ·Guy Nathaniel Brock, John R. Shaffer, Richard E. Blakesley, Meredith Lotz, George C. Tseng	2008	96
15	Genome-wide Association Scan for Childhood Caries Implicates Novel Genes Journal of Dental Research ·John R. Shaffer, X. Wang, Eleanor Feingold, M. Lee, Ferdouse Begum, Daniel E. Weeks, Karen T. Cuenco, M. Michael Barmada	2011	96
16	Genome-Wide Association Studies in Dogs and Humans Identify ADAMTS20 as a Risk Variant for Cleft Lip and Palate PLoS Genetics ·Zena T. Wolf, Harrison Brand, John R. Shaffer, Elizabeth J. Leslie, Boaz Arzi, Cali E. Willet, Timothy C. Cox, Toby Goldstein McHenry	2015	92
17	GWAS of Dental Caries Patterns in the Permanent Dentition Journal of Dental Research ·John R. Shaffer, Eleanor Feingold, X. Wang, M. Lee, Karen T Tcuenco, Daniel E. Weeks, Robert J. Weyant, Richard J. Crout	2012	79
18	Genome-wide association Scan of dental caries in the permanent dentition BMC Oral Health ·Xiaojing Wang, John R. Shaffer, Zhen Zeng, Ferdouse Begum, Alexandre Rezende Vieira, Jacqueline Noel, Ida Anjomshoaa, Karen T. Cuenco	2012	77
19	Shared heritability of human face and brain shape Nature Genetics ·Sahin Naqvi, Yoeri Sleyp, Hanne Hoskens, Karlijne Indencleef, Jeffrey P. Spence, Rose Bruffaerts, Ahmed Radwan, Ryan J. Eller	2021	73
20	A Novel Loss-of-Function DDAH1 Promoter Polymorphism Is Associated With Increased Susceptibility to Thrombosis Stroke and Coronary Heart Disease Circulation Research ·Hu Ding, Bin Wu, Hu Wang, Jiangtao Yan, Xiaojing Wang, John R. Shaffer, Rutai Hui, Dao Wen Wang +1 other	2010	72

About John R. Shaffer

John R. Shaffer is a scholar working on Periodontics, Genetics, Orthopedics and Sports Medicine, Oral Surgery and Neurology, having authored 154 papers that have together received 5.1k indexed citations. Recurring topics across this work include Cleft Lip and Palate Research (21 papers), Dental Health and Care Utilization (21 papers), Genetic Associations and Epidemiology (18 papers), Oral microbiology and periodontitis research (8 papers), Bone health and osteoporosis research (6 papers), dental development and anomalies (4 papers), Smoking Behavior and Cessation (3 papers) and Dental Anxiety and Anesthesia Techniques (3 papers). The work is most often cited by research in Periodontics (916 citations), Genetics (1.3k citations), Complementary and Manual Therapy (22 citations), Oral Surgery (68 citations) and Orthopedics and Sports Medicine (79 citations). John R. Shaffer has collaborated with scholars based in United States, Belgium and United Kingdom. Frequent co-authors include Mary L. Marazita, Eleanor Feingold, Daniel W. McNeil, Richard J. Crout, Robert J. Weyant, Seth Michael Weinberg, Daniel E. Weeks, Karen T. Cuenco, X. Wang and Elizabeth J. Leslie. Their work appears in journals such as Journal of Dental Research, PLoS Genetics, Genetic Epidemiology, BMC Oral Health and Community Dentistry And Oral Epidemiology.

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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John R. Shaffer's Hit Papers

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About John R. Shaffer

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