Karen E. Callahan

36 total papers · 1.2k total citations
31 papers, 756 citations indexed

About

Karen E. Callahan is a scholar working on Oncology, Epidemiology and Clinical Psychology. According to data from OpenAlex, Karen E. Callahan has authored 31 papers receiving a total of 756 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Oncology, 7 papers in Epidemiology and 6 papers in Clinical Psychology. Recurrent topics in Karen E. Callahan’s work include Global Cancer Incidence and Screening (17 papers), Colorectal Cancer Screening and Detection (8 papers) and Migration, Health and Trauma (6 papers). Karen E. Callahan is often cited by papers focused on Global Cancer Incidence and Screening (17 papers), Colorectal Cancer Screening and Detection (8 papers) and Migration, Health and Trauma (6 papers). Karen E. Callahan collaborates with scholars based in United States, Nepal and Grenada. Karen E. Callahan's co-authors include Paulo S. Pinheiro, Saruna Ghimire, Binaya Kumar Baral, Erin N. Kobetz, Cyllene R. Morris, Scarlett Lin Gomez, Sean F. Altekruse, Heidy N. Medina, Camille Ragin and Robert Hage and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and PLoS ONE.

Co-authorship network of co-authors of Karen E. Callahan

This figure shows the co-authorship network connecting the top 25 collaborators of Karen E. Callahan. A scholar is included among the top collaborators of Karen E. Callahan 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 Karen E. Callahan. Karen E. Callahan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

Karen E. Callahan

30 papers receiving 746 citations

Fields of papers citing papers by Karen E. Callahan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Karen E. Callahan. 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 Karen E. Callahan. The network helps show where Karen E. Callahan may publish in the future.

Countries citing papers authored by Karen E. Callahan

Since Specialization
Citations

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

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.

Explore authors with similar magnitude of impact

Rankless by CCL
2026