Christopher James O'Callaghan

13.3k citations
96 papers · 10.1k · 4 hit papers · h-index 41

Impact in

  • Parasitology top 0.2%
    • Vector-borne infectious diseases
  • Oncology top 0.5%
    • Pancreatic and Hepatic Oncology Research
    • Colorectal Cancer Treatments and Studies
    • HER2/EGFR in Cancer Research

Papers in

    • Vector-borne infectious diseases 21
    • Colorectal Cancer Treatments and Studies 8

Christopher James O'Callaghan

94 papers receiving 9.8k citations

Christopher James O'Callaghan's Hit Papers

Structured Exercise after Adjuvant Chemotherapy for Colon Cancer 2025 · 121 citations
1210+4+9Years since publication50010001.5k2.0k

Peers

Christopher James O'Callaghan
Comparison fields: 5 of 114
  • Parasitology 1.5k
  • Oncology 2.7k
  • Radiological and Ultrasound Technology 319
  • Genetics 676
  • Public Health, Environmental and Occupational Health 680
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Citations per field
00.5×20×40×60×87.4×
Charles R. Key · 1×
Citations per year

Countries citing papers authored by Christopher James O'Callaghan

Since Specialization
Citations

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

Fields of papers citing papers by Christopher James O'Callaghan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Christopher James O'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 Christopher James O'Callaghan. The network helps show where Christopher James O'Callaghan may publish in the future.

Co-authors

The 25 scholars most cited alongside Christopher James O'Callaghan, 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 Christopher James O'Callaghan Line = papers co-authored together Christopher James O'Callaghan links everyone, so they are left out of the graph.

All Works

20 of 20 papers shown

Showing the 20 most-cited of 96 papers — load more, or switch the sort, to bring in the rest.

#Work
1
FOLFIRINOX or Gemcitabine as Adjuvant Therapy for Pancreatic Cancer
Hit paper breakdown →
20182184
2
Short-Course Radiation plus Temozolomide in Elderly Patients with Glioblastoma
Hit paper breakdown →
2017879
3 2005596
4 2004428
5
Intermittent Androgen Suppression for Rising PSA Level after Radiotherapy
Hit paper breakdown →
2012397
6 2002371
7 2008326
8 2005315
9 2005264
10 2000247
11 2003241
12 1997220
13 2008207
14 2007206
15 2004204
16 2016186
17 2003162
18 2018154
19 1996146
20 2013143

About Christopher James O'Callaghan

Christopher James O'Callaghan is a scholar working on Parasitology, Oncology, Geriatrics and Gerontology, Public Health, Environmental and Occupational Health and Cardiology and Cardiovascular Medicine, having authored 96 papers that have together received 10.1k indexed citations. Recurring topics across this work include Vector-borne infectious diseases (21 papers), Colorectal Cancer Treatments and Studies (8 papers), Blood Pressure and Hypertension Studies (4 papers), Palliative Care and End-of-Life Issues (4 papers), Health Systems, Economic Evaluations, Quality of Life (3 papers), Hepatitis B Virus Studies (2 papers), Pharmaceutical Practices and Patient Outcomes (2 papers) and Gastric Cancer Management and Outcomes (2 papers). The work is most often cited by research in Parasitology (1.5k citations), Oncology (2.7k citations), Radiological and Ultrasound Technology (319 citations), Genetics (676 citations) and Public Health, Environmental and Occupational Health (680 citations). Christopher James O'Callaghan has collaborated with scholars based in Canada, Australia and United Kingdom. Frequent co-authors include Nicholas Hume Ogden, Bryan Williams, L. Robbin Lindsay, Dominique F Charron, Ian K. Barker, Daren Keith Heyland, M. Bigras-Poulin, Abdel R. Maarouf, Graeme M. Rocker and Peter Dodek. Their work appears in journals such as Journal of Clinical Oncology, Parasitology, New England Journal of Medicine, Preventive Veterinary Medicine and Hypertension.

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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