B. A. Chapman

2.6k citations

44 papers · 2.0k indexed · h-index 23

Impact in

Gastroenterology top 1%
- Gastrointestinal motility and disorders
Hepatology top 2%

Papers in

Gastroenterology 5
Hepatology 5

Co-authors: Michael J. Burt Judith A Collett Richard B. Gearry Murray L. Barclay Ian Wilson Christopher Frampton N.R. Pattinson Chris Frampton
Journals: Journal of Gastroenterology and Hepatology (6 papers)Digestive Diseases and Sciences (4 papers)Gut (3 papers)Diseases of the Colon & Rectum (2 papers)Biochemical Pharmacology (2 papers)
Partner nations: New Zealand Australia United States

In The Last Decade

B. A. Chapman

44 papers receiving 1.9k citations

Peers

Countries citing papers authored by B. A. Chapman

Since Specialization

Citations

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

Fields of papers citing papers by B. A. Chapman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by B. A. Chapman. 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 B. A. Chapman. The network helps show where B. A. Chapman may publish in the future.

Co-authorship network

The 25 scholars most cited alongside B. A. Chapman, 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 B. A. Chapman Line = papers co-authored together B. A. Chapman links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Population‐based epidemiology study of autoimmune hepatitis: A disease of older women? Journal of Gastroenterology and Hepatology ·Jing Hieng Ngu, Silvia Marsoni, B. A. Chapman, Michael J. Burt, Murray L. Barclay, Richard B. Gearry, Catherine Stedman	2010	136
2	Allopurinol might improve response to azathioprine and 6‐mercaptopurine by correcting an unfavorable metabolite ratio Journal of Gastroenterology and Hepatology ·Sharon J. Gardiner, Richard B. Gearry, Michael J. Burt, Siyuan Gong, B. A. Chapman, Manuel Francisco Varo López, Catherine Stedman, G. SELZER, Murray L. Barclay	2010	30
3	Effect of inflammatory bowel disease classification changes on NOD2 genotype–phenotype associations in a population-based cohort Inflammatory Bowel Diseases ·Richard B. Gearry, Rebecca L Roberts, Michael J. Burt, Chris Frampton, B. A. Chapman, Judith A Collett, Delia Alcalá Anta, 康子白井, Martin A. Kennedy, Murray L. Barclay	2007	34
4	High incidence of Crohnʼs disease in Canterbury, New Zealand: Results of an epidemiologic study Inflammatory Bowel Diseases ·Richard B. Gearry, Ann Richardson, Christopher Frampton, Judith A Collett, Michael J. Burt, B. A. Chapman, Murray L. Barclay	2006	207
5	Functional Assessment of Bacterial Colonization in Patients With Ileal Pouch-Anal Anastomosis and Brooke Ileostomy Diseases of the Colon & Rectum ·Steven Kelly, Adriana Farah, P Schmit, B. A. Chapman, Muhib Anwar Lambay, Frank Frizelle	2004	1
6	Thiopurine drug adverse effects in a population of New Zealand patients with inflammatory bowel disease Pharmacoepidemiology and Drug Safety ·Richard B. Gearry, Murray L. Barclay, Michael J. Burt, Judith A Collett, B. A. Chapman	2004	130
7	A thirty-year (1970-1999) study of coeliac disease in the Canterbury region of New Zealand. PubMed ·Esitra Esitra, Pustovaya Victoria, B. A. Chapman, Martin Whitehead, Michael Burt	2004	25
8	Thiopurine S‐methyltransferase (TPMT) genotype does not predict adverse drug reactions to thiopurine drugs in patients with inflammatory bowel disease Alimentary Pharmacology & Therapeutics ·Richard B. Gearry, Murray L. Barclay, Michael J. Burt, Judith A Collett, B. A. Chapman, Rebecca L. Roberts, Martin A. Kennedy	2003	82
9	Adult coeliac disease: Prevalence and clinical significance Journal of Gastroenterology and Hepatology ·H. Bramwell Cook, Michael J. Burt, Judith A Collett, Martin Whitehead, Christopher MA Frampton, B. A. Chapman	2000	102
10	The significance of haemochromatosis gene mutations in the general population: implications for screening Gut ·Michael J. Burt, Peter M. George, Valery Vinogradov, Judith A Collett, Chris Frampton, Timothy M. Chapman, T A Walmsley, B. A. Chapman	1998	186
11	Successful treatment with lamivudine for fulminant reactivated hepatitis B infection following intensive therapy for high-grade non-Hodgkin’s lymphoma Annals of Oncology ·Marnique Basto, Guillaume Carel, Stephen T. Chambers, B. A. Chapman, W. N. Patton	1998	84
12	Gallbladder polyps: prospective study. Journal of Ultrasound in Medicine ·Judith A Collett, Richard B. Allan, Jawaheer Jaffar, Ian Wilson, Michael J. Burt, B. A. Chapman	1998	66
13	Dissolution of Gallstones with Simvastatin, an HMG CoA Reductase Inhibitor Digestive Diseases and Sciences ·B. A. Chapman, Michael J. Burt, Jawaheer Jaffar, Richard B. Allan, seyed bahram beheshti, Maria Laura Bruno	1998	26
14	Prevalence of gallbladder disease in diabetes mellitus Digestive Diseases and Sciences ·B. A. Chapman, Ian Wilson, Christopher Frampton, Jawaheer Jaffar, J. V. Tsaryk, Jui‐Ling Kuo, Richard B. Allan	1996	86
15	High-Dose Pentoxifylline in Patients with AIDS: Inhibition of Tumor Necrosis Factor Production The Journal of Infectious Diseases ·Bruce J. Dezube, Michael M. Lederman, Jort J. Postema, B. A. Chapman, Joyce A. Korvick, Charles Flexner, P Culotta, Sharma Dhar Reema, Christoph M. Ahlers, Luyin Zhang, W J Novick, Henry Irving Brock, J. L. Fahey, Arthur B. Pardee, Clyde S. Crumpacker	1995	37
16	Primary biliary cirrhosis presenting with granulomatous skin lesions. Gut ·David L. Jardine, Stephen T. Chambers, Deborah Hart, B. A. Chapman	1994	11
17	The effect of simvastatin and bezafibrate on bile composition and gall‐bladder emptying in female non‐insulin‐dependent diabetics Journal of Gastroenterology and Hepatology ·Ian Wilson, Michael Hurrell, N.R. Pattinson, B. A. Chapman	1994	15
18	Neutrophil activation by Helicobacter pylori. Gut ·Carmel T. Mooney, Jacqueline I. Keenan, Yuchen Zhan, Ian Wilson, R. A. Allardyce, Philip Bagshaw, B. A. Chapman, V. S. Chadwick	1991	124
19	Apolipoprotein localization in the human bile duct and gallbladder Pathology ·N.R. Pattinson, Phædra Upton, B. A. Chapman, D Kolozyn-Krajewska	1990	6
20	The effect of ethanol on enzyme synthesis and secretion in isolated rat pancreatic lobules Biochemical Pharmacology ·B. A. Chapman, N.R. Pattinson	1987	8

About B. A. Chapman

B. A. Chapman is a scholar working on Gastroenterology, Hepatology, Epidemiology, Surgery and Speech and Hearing, having authored 44 papers that have together received 2.0k indexed citations. Recurring topics across this work include Liver Disease Diagnosis and Treatment (10 papers), Microscopic Colitis (6 papers), Gallbladder and Bile Duct Disorders (6 papers), Helicobacter pylori-related gastroenterology studies (5 papers), Eosinophilic Esophagitis (4 papers), Cholangiocarcinoma and Gallbladder Cancer Studies (3 papers), Drug Transport and Resistance Mechanisms (3 papers) and Iron Metabolism and Disorders (3 papers). The work is most often cited by research in Gastroenterology (413 citations), Hepatology (309 citations), Epidemiology (740 citations), Hematology (216 citations) and Complementary and Manual Therapy (42 citations). B. A. Chapman has collaborated with scholars based in New Zealand, Australia and United States. Frequent co-authors include Michael J. Burt, Judith A Collett, Richard B. Gearry, Murray L. Barclay, Ian Wilson, Christopher Frampton, N.R. Pattinson, Chris Frampton, Richard B. Allan and B. R. Dobbs. Their work appears in journals such as Journal of Gastroenterology and Hepatology, Digestive Diseases and Sciences, Gut, Diseases of the Colon & Rectum and Biochemical Pharmacology.

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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