PJ Hamlin

1.1k total citations · 1 hit paper
22 papers, 836 citations indexed

About

PJ Hamlin is a scholar working on Epidemiology, Genetics and Gastroenterology. According to data from OpenAlex, PJ Hamlin has authored 22 papers receiving a total of 836 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Epidemiology, 18 papers in Genetics and 7 papers in Gastroenterology. Recurrent topics in PJ Hamlin's work include Inflammatory Bowel Disease (18 papers), Microscopic Colitis (17 papers) and Gastrointestinal motility and disorders (3 papers). PJ Hamlin is often cited by papers focused on Inflammatory Bowel Disease (18 papers), Microscopic Colitis (17 papers) and Gastrointestinal motility and disorders (3 papers). PJ Hamlin collaborates with scholars based in United Kingdom, Ireland and United States. PJ Hamlin's co-authors include Alexander C. Ford, David J. Gracie, Yannick Derwa, Elspeth Guthrie, Anthony O’Connor, Christian P. Selinger, Raguprakash Ratnakumaran, Barry Hall, Nicholas Burr and Shaji Sebastian and has published in prestigious journals such as Gastroenterology, Gut and Alimentary Pharmacology & Therapeutics.

In The Last Decade

PJ Hamlin

21 papers receiving 821 citations

Hit Papers

Bi-directionality of Brain–Gut Interactions in Patients W... 2018 2026 2020 2023 2018 50 100 150 200 250
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.

  1. Bi-directionality of Brain–Gut Interactions in Patients With Inflammatory Bowel Disease
    2018 277 citations David J. Gracie, Elspeth Guthrie et al. Gastroenterology profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
PJ Hamlin United Kingdom 12 426 346 255 206 137 22 836
Antonio Torrejón Spain 14 488 1.1× 290 0.8× 416 1.6× 165 0.8× 170 1.2× 30 891
Christopher Hair Australia 14 319 0.7× 281 0.8× 434 1.7× 167 0.8× 224 1.6× 27 1.0k
Houssam E. Mardini United States 12 353 0.8× 314 0.9× 103 0.4× 291 1.4× 410 3.0× 34 951
Dorottya Nagy‐Szakal United States 16 267 0.6× 125 0.4× 543 2.1× 91 0.4× 84 0.6× 24 864
Nienke Z. Borren United States 15 600 1.4× 548 1.6× 224 0.9× 95 0.5× 186 1.4× 30 993
Zubin Grover Australia 10 365 0.9× 232 0.7× 93 0.4× 77 0.4× 223 1.6× 29 661
Darija Vranešić Bender Croatia 15 193 0.5× 171 0.5× 250 1.0× 63 0.3× 138 1.0× 51 792
Luis Leon Novelo United States 6 244 0.6× 84 0.2× 451 1.8× 86 0.4× 78 0.6× 11 673
Chamara Basnayake Australia 12 142 0.3× 98 0.3× 119 0.5× 225 1.1× 150 1.1× 42 548
Joshua Hansen United States 16 185 0.4× 744 2.2× 150 0.6× 884 4.3× 531 3.9× 26 1.2k

Countries citing papers authored by PJ Hamlin

Since Specialization
Citations

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

Fields of papers citing papers by PJ Hamlin

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by PJ Hamlin. 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 PJ Hamlin. The network helps show where PJ Hamlin may publish in the future.

Co-authorship network of co-authors of PJ Hamlin

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

All Works

20 of 20 papers shown
1.
Fairbrass, Keeley M., PJ Hamlin, David J. Gracie, & Alexander C. Ford. (2022). Natural history and impact of irritable bowel syndrome‐type symptoms in inflammatory bowel disease during 6 years of longitudinal follow‐up. Alimentary Pharmacology & Therapeutics. 56(8). 1264–1273. 14 indexed citations
2.
3.
O’Connor, Anthony, et al.. (2019). Randomized controlled trial: a pilot study of a psychoeducational intervention for fatigue in patients with quiescent inflammatory bowel disease. Therapeutic Advances in Chronic Disease. 10. 1753130215–1753130215. 18 indexed citations
4.
Derwa, Yannick, Christopher J.M. Williams, Ruchit Sood, et al.. (2018). Factors affecting clinical decision-making in inflammatory bowel disease and the role of point-of-care calprotectin. Therapeutic Advances in Gastroenterology. 11. 1756283X17744739–1756283X17744739. 17 indexed citations
5.
Gracie, David J., Elspeth Guthrie, PJ Hamlin, & Alexander C. Ford. (2018). Bi-directionality of Brain–Gut Interactions in Patients With Inflammatory Bowel Disease. Gastroenterology. 154(6). 1635–1646.e3. 277 indexed citations breakdown →
6.
Burr, Nicholas, Barry Hall, PJ Hamlin, et al.. (2018). Systematic Review and Network Meta-Analysis of Medical Therapies to Prevent Recurrence of Post-Operative Crohn’s Disease. Journal of Crohn s and Colitis. 13(6). 693–701. 41 indexed citations
7.
8.
Ratnakumaran, Raguprakash, David J. Gracie, Christian P. Selinger, et al.. (2018). Efficacy and tolerability of initiating, or switching to, infliximab biosimilar CT-P13 in inflammatory bowel disease (IBD): a large single-centre experience. Scandinavian Journal of Gastroenterology. 53(6). 700–707. 37 indexed citations
9.
Lenti, Marco Vincenzo, et al.. (2017). PWE-053 Outcomes of anti-tnf versus vedolizumab therapy for ulcerative colitis: the leeds experience. HighWire Press Open Archive. A152.1–A152. 1 indexed citations
10.
Derwa, Yannick, David J. Gracie, PJ Hamlin, & Alexander C. Ford. (2017). Systematic review with meta‐analysis: the efficacy of probiotics in inflammatory bowel disease. Alimentary Pharmacology & Therapeutics. 46(4). 389–400. 283 indexed citations
11.
Ratnakumaran, Raguprakash, Nigel Scott, Alexander C. Ford, & PJ Hamlin. (2017). PTH-071 The changing face of surgery for ulcerative colitis: analysis of 10 years of colectomy data. Gut. 66. A241.2–A242. 1 indexed citations
12.
Ratnakumaran, Raguprakash, et al.. (2017). Fatigue in Inflammatory Bowel Disease Reflects Mood and Symptom-Reporting Behavior Rather Than Biochemical Activity or Anemia. Clinical Gastroenterology and Hepatology. 16(7). 1165–1167. 15 indexed citations
13.
Johnston, Alexander, et al.. (2017). P227 Outcomes of anti-TNF versus Vedolizumab therapy for ulcerative colitis: the Leeds experience. Journal of Crohn s and Colitis. 11(suppl_1). S192–S193. 1 indexed citations
14.
Levison, Scott, Robert P. Willert, Karen Kemp, et al.. (2017). P525 Effectiveness and safety of vedolizumab in IBD patients: a multicentre experience of “real world data” from the UK. Journal of Crohn s and Colitis. 11(suppl_1). S347–S347. 2 indexed citations
15.
Derwa, Yannick, David J. Gracie, PJ Hamlin, & Alexander C. Ford. (2017). P622 Efficacy of probiotics in inflammatory bowel disease: systematic review and meta-analysis. Journal of Crohn s and Colitis. 11(suppl_1). S398–S399. 4 indexed citations
16.
O’Connor, Anthony, Joby Taylor, Lara N. Roberts, et al.. (2015). PTU-067 How are postoperative crohn’s patients followed up? a retrospective analysis from a tertiary referral centre. A89.2–A89. 1 indexed citations
17.
Brooks, Alenka J, Shaji Sebastian, Simon S. Cross, et al.. (2014). Outcome of elective withdrawal of anti-tumour necrosis factor-α therapy in patients with Crohn's disease in established remission. Journal of Crohn s and Colitis. 11(12). 1456–1462. 40 indexed citations
18.
Sood, Ruchit, et al.. (2014). Long-term Efficacy and Safety of Azathioprine in Ulcerative Colitis. Journal of Crohn s and Colitis. 9(2). 191–197. 21 indexed citations
19.
Hamlin, PJ, et al.. (2004). Systemic cytomegalovirus infection complicating ulcerative colitis: a case report and review of the literature. Postgraduate Medical Journal. 80(942). 233–235. 30 indexed citations
20.
Hamlin, PJ, et al.. (1997). Programme d'amélioration de la qualité en sécurité transfusionnelle. Transfusion Clinique et Biologique. 4(5). 485–491. 5 indexed citations

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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