Rogier Klok

647 total citations
30 papers, 452 citations indexed

About

Rogier Klok is a scholar working on Surgery, Gastroenterology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Rogier Klok has authored 30 papers receiving a total of 452 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Surgery, 10 papers in Gastroenterology and 7 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Rogier Klok's work include Gastroesophageal reflux and treatments (10 papers), Helicobacter pylori-related gastroenterology studies (9 papers) and Respiratory viral infections research (7 papers). Rogier Klok is often cited by papers focused on Gastroesophageal reflux and treatments (10 papers), Helicobacter pylori-related gastroenterology studies (9 papers) and Respiratory viral infections research (7 papers). Rogier Klok collaborates with scholars based in United States, Netherlands and Spain. Rogier Klok's co-authors include Maarten J. Postma, J. R. B. J. Brouwers, Raymond Farkouh, David Strutton, Ben A. van Hout, Stephanie Earnshaw, Harald E. Vonkeman, Mart A F J van de Laar, Mats Ekelund and S Papanicolaou and has published in prestigious journals such as PLoS ONE, Vaccine and Alimentary Pharmacology & Therapeutics.

In The Last Decade

Rogier Klok

27 papers receiving 438 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Rogier Klok United States 12 174 142 135 54 47 30 452
Edward Sheen United States 9 94 0.5× 113 0.8× 142 1.1× 2 0.0× 37 0.8× 12 386
A. Suarez Spain 15 192 1.1× 78 0.5× 217 1.6× 5 0.1× 2 0.0× 36 512
P. O. Abiodun Nigeria 13 77 0.4× 16 0.1× 46 0.3× 20 0.4× 3 0.1× 34 412
Stuart Carr Canada 16 85 0.5× 20 0.1× 222 1.6× 4 0.1× 3 0.1× 26 812
Anna Hume United States 9 69 0.4× 7 0.0× 59 0.4× 8 0.1× 15 0.3× 20 372
Usha Gungabissoon United Kingdom 10 137 0.8× 9 0.1× 77 0.6× 18 0.3× 11 0.2× 23 433
D. Hull United States 9 67 0.4× 15 0.1× 102 0.8× 8 0.1× 7 0.1× 23 450
Wilson Li China 14 169 1.0× 4 0.0× 224 1.7× 4 0.1× 19 0.4× 28 434
Manoj Biswas India 10 67 0.4× 5 0.0× 98 0.7× 23 0.4× 3 0.1× 37 341
Reka Thanabalan Canada 8 128 0.7× 27 0.2× 74 0.5× 1 0.0× 18 0.4× 8 352

Countries citing papers authored by Rogier Klok

Since Specialization
Citations

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

Fields of papers citing papers by Rogier Klok

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Rogier Klok

This figure shows the co-authorship network connecting the top 25 collaborators of Rogier Klok. A scholar is included among the top collaborators of Rogier Klok 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 Rogier Klok. Rogier Klok 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.
Vizza, Carmine Dario, Rogier Klok, Mark Small, et al.. (2024). Clinical Characteristics and Treatment of Patients Diagnosed with Pulmonary Arterial Hypertension: A Real-World Study in the USA, Europe and Japan. Advances in Therapy. 42(1). 193–215. 1 indexed citations
2.
3.
Vizza, Carmine Dario, et al.. (2024). Predictive factors of right heart catheterization to diagnose pulmonary arterial hypertension using least absolute shrinkage selection operator (LASSO) regression. Current Medical Research and Opinion. 40(10). 1667–1672. 1 indexed citations
4.
McLaughlin, Vallerie V., Rogier Klok, Eliana C. Martinez, et al.. (2023). Population Health Model Predicting the Long-Term Impact of Sotatercept on Morbidity and Mortality in Patients with Pulmonary Arterial Hypertension (PAH). Advances in Therapy. 41(1). 130–151. 8 indexed citations
5.
Rådegran, Göran, Oisín Butler, Roger Hesselstrand, et al.. (2020). Longitudinal Changes in Risk Status in Pulmonary Arterial Hypertension. ESC Heart Failure. 8(1). 680–690. 7 indexed citations
6.
Pelton, Stephen I., Kimberly M. Shea, Raymond Farkouh, et al.. (2015). Rates of pneumonia among children and adults with chronic medical conditions in Germany. BMC Infectious Diseases. 15(1). 470–470. 46 indexed citations
7.
8.
9.
Farkouh, Raymond, Rogier Klok, Maarten J. Postma, Craig S. Roberts, & David Strutton. (2012). Cost–effectiveness models of pneumococcal conjugate vaccines: variability and impact of modeling assumptions. Expert Review of Vaccines. 11(10). 1235–1247. 19 indexed citations
10.
Strutton, David, Raymond Farkouh, Stephanie Earnshaw, et al.. (2011). Cost-effectiveness of 13-valent pneumococcal conjugate vaccine: Germany, Greece, and The Netherlands. Journal of Infection. 64(1). 54–67. 62 indexed citations
11.
Earnshaw, Stephanie, Rogier Klok, Shrividya Iyer, & Cheryl McDade. (2010). Methylnaltrexone bromide for the treatment of opioid‐induced constipation in patients with advanced illness – a cost‐effectiveness analysis. Alimentary Pharmacology & Therapeutics. 31(8). 911–921. 22 indexed citations
12.
Beest, Fernie J. A. Penning‐van, et al.. (2010). Quality of life in relation to constipation among opioid users. Journal of Medical Economics. 13(1). 129–135. 38 indexed citations
13.
Vries, Robin de, Rogier Klok, J. R. B. J. Brouwers, & Maarten J. Postma. (2008). Cost-effectiveness of a potential future Helicobacter pylori vaccine in the Netherlands: The impact of varying the discount rate for health. Vaccine. 27(6). 846–852. 11 indexed citations
14.
Vonkeman, Harald E., Rogier Klok, Maarten J. Postma, J. R. B. J. Brouwers, & Mart A F J van de Laar. (2007). Direct Medical Costs of Serious Gastrointestinal Ulcers among Users of NSAIDs. Drugs & Aging. 24(8). 681–690. 43 indexed citations
15.
Klok, Rogier, et al.. (2007). Pharmacoeconomics of quetiapine for the management of acute mania in bipolar I disorder. Expert Review of Pharmacoeconomics & Outcomes Research. 7(5). 459–467. 9 indexed citations
16.
Klok, Rogier, et al.. (2006). Switch patterns before and after patent expiry of omeprazole: a case study in The Netherlands. Alimentary Pharmacology & Therapeutics. 23(11). 1595–1600. 10 indexed citations
17.
Boersma, Cornelis, Rogier Klok, Mark Naunton, et al.. (2005). Drug Costs Developments after Patent Expiry of Enalapril, Fluoxetine and Ranitidine. Applied Health Economics and Health Policy. 4(3). 191–196. 17 indexed citations
18.
Klok, Rogier, et al.. (2004). Gebruikseffecten rond het aflopen van de patenten op omeprazol en simvastatine: Wel generieke substitutie, geen resubstitutie. University of Groningen research database (University of Groningen / Centre for Information Technology). 139(49). 1639–1642. 1 indexed citations
19.
Klok, Rogier, Maarten J. Postma, Ben A. van Hout, & J. R. B. J. Brouwers. (2003). Meta‐analysis: comparing the efficacy of proton pump inhibitors in short‐term use. Alimentary Pharmacology & Therapeutics. 17(10). 1237–1245. 62 indexed citations
20.
Hout, Ben A. van, Rogier Klok, J. R. B. J. Brouwers, & Maarten J. Postma. (2003). A pharmacoeconomic comparison of the efficacy and costs of pantoprazole and omeprazole for the treatment of peptic ulcer or gastroesophageal reflux disease in the Netherlands. Clinical Therapeutics. 25(2). 635–646. 12 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Edward Sheen Breakdown of academic impact, for papers by A. Suarez Breakdown of academic impact, for papers by P. O. Abiodun Breakdown of academic impact, for papers by Stuart Carr Breakdown of academic impact, for papers by Anna Hume Breakdown of academic impact, for papers by Usha Gungabissoon Breakdown of academic impact, for papers by D. Hull Breakdown of academic impact, for papers by Wilson Li Breakdown of academic impact, for papers by Manoj Biswas Breakdown of academic impact, for papers by Reka Thanabalan
Rankless by CCL
2026