Alexander Hapfelmeier

8.9k total citations
255 papers, 5.4k citations indexed

About

Alexander Hapfelmeier is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Alexander Hapfelmeier has authored 255 papers receiving a total of 5.4k indexed citations (citations by other indexed papers that have themselves been cited), including 79 papers in Surgery, 48 papers in Pulmonary and Respiratory Medicine and 42 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Alexander Hapfelmeier's work include Hemodynamic Monitoring and Therapy (25 papers), Non-Invasive Vital Sign Monitoring (18 papers) and Gastric Cancer Management and Outcomes (14 papers). Alexander Hapfelmeier is often cited by papers focused on Hemodynamic Monitoring and Therapy (25 papers), Non-Invasive Vital Sign Monitoring (18 papers) and Gastric Cancer Management and Outcomes (14 papers). Alexander Hapfelmeier collaborates with scholars based in Germany, United States and United Kingdom. Alexander Hapfelmeier's co-authors include Kurt Ulm, Bernd Saugel, Torsten Hothorn, Wolfgang Huber, Roland M. Schmid, Gisela Keller, Rupert Langer, Agnes S. Meidert, Gerhard Schneider and Carolin Strobl and has published in prestigious journals such as New England Journal of Medicine, Journal of Clinical Oncology and SHILAP Revista de lepidopterología.

In The Last Decade

Alexander Hapfelmeier

243 papers receiving 5.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Alexander Hapfelmeier Germany 40 1.8k 891 759 686 601 255 5.4k
John Carson Allen Singapore 40 1.3k 0.7× 1.1k 1.3× 690 0.9× 694 1.0× 410 0.7× 346 6.4k
Valentin Rousson Switzerland 51 2.0k 1.1× 851 1.0× 1.5k 2.0× 1.2k 1.7× 730 1.2× 238 9.9k
Hanns Ackermann Germany 38 2.0k 1.1× 854 1.0× 1.2k 1.6× 435 0.6× 415 0.7× 199 5.6k
Colin A. Graham Hong Kong 40 1.5k 0.8× 502 0.6× 1.1k 1.5× 968 1.4× 591 1.0× 367 6.5k
David Snead United Kingdom 39 1.2k 0.7× 906 1.0× 663 0.9× 382 0.6× 980 1.6× 128 6.6k
Morten Wang Fagerland Norway 43 1.7k 1.0× 1.5k 1.6× 841 1.1× 481 0.7× 1.1k 1.8× 165 7.8k
Jie Chen China 42 1.8k 1.0× 441 0.5× 829 1.1× 686 1.0× 622 1.0× 435 6.2k
Andrea Berghold Austria 48 2.1k 1.2× 1.3k 1.5× 1.4k 1.8× 1.1k 1.6× 505 0.8× 218 7.8k
Toshimitsu Hamasaki Japan 40 1.0k 0.6× 857 1.0× 507 0.7× 917 1.3× 404 0.7× 203 5.1k
Antonio Esposito Italy 43 1.4k 0.8× 2.6k 3.0× 1.3k 1.7× 1.2k 1.7× 592 1.0× 291 7.0k

Countries citing papers authored by Alexander Hapfelmeier

Since Specialization
Citations

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

Fields of papers citing papers by Alexander Hapfelmeier

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Alexander Hapfelmeier

This figure shows the co-authorship network connecting the top 25 collaborators of Alexander Hapfelmeier. A scholar is included among the top collaborators of Alexander Hapfelmeier 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 Alexander Hapfelmeier. Alexander Hapfelmeier 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.
Aktürk, Zekeriya, et al.. (2025). Beck Anxiety Inventory (BAI) for detecting anxiety disorders in adults. Cochrane Database of Systematic Reviews. 2025(12). CD015457–CD015457.
2.
Hapfelmeier, Alexander, Klaus Linde, Linda Sanftenberg, et al.. (2025). Effectiveness of an online asthma education program in adults with asthma in general practice: Results from a cluster randomised controlled trial. Respiratory Medicine. 240. 108041–108041. 1 indexed citations
3.
Ranft, Andreas, Sebastian Berger, Martin Schubert, et al.. (2024). Clinical outcome after endovascular stroke Thrombectomy: Association with pre-reperfusion blood pressure. Journal of Clinical Anesthesia. 99. 111665–111665.
4.
Kurotschka, Peter K, Gábor Borgulya, Adolfo Figueiras, et al.. (2024). Dipsticks and point-of-care Microscopy to reduce antibiotic use in women with an uncomplicated Urinary Tract Infection (MicUTI): protocol of a randomised controlled pilot trial in primary care. BMJ Open. 14(3). e079345–e079345. 1 indexed citations
5.
6.
Vasapolli, Riccardo, Ulrich Lang, Christoph R. Werner, et al.. (2023). HelicoPTER – lokale Prävalenz, Therapieerfolg und Antibiotikaresistenz der Helicobacter pylori-Infektion in Deutschland. Zeitschrift für Gastroenterologie. 61(8). e366–e366.
7.
Hapfelmeier, Alexander, et al.. (2022). Combining the GP’s assessment and the PHQ-9 questionnaire leads to more reliable and clinically relevant diagnoses in primary care. PLoS ONE. 17(10). e0276534–e0276534. 3 indexed citations
8.
Wasner, Maria, et al.. (2022). Thick Mucus in ALS: A Mixed-Method Study on Associated Factors and Its Impact on Quality of Life of Patients and Caregivers. Brain Sciences. 12(2). 252–252. 5 indexed citations
9.
Kellerer, Christina, Konrad Schultz, Klaus Linde, et al.. (2022). Implementation of an internet-based asthma patient education program in primary care: results of a single-arm trial. Journal of Asthma. 60(1). 195–202. 4 indexed citations
10.
Brand, Korbinian, Alexander Hapfelmeier, & Bernhard Haller. (2021). A systematic review of subgroup analyses in randomised clinical trials in cardiovascular disease. Clinical Trials. 18(3). 351–360. 10 indexed citations
11.
Linde, Klaus, et al.. (2021). The diversity of opinion among general practitioners regarding the threat and measures against COVID-19 – Cross-sectional survey. European Journal of General Practice. 27(1). 176–183. 4 indexed citations
12.
Feihl, Susanne, Christiane Querbach, Alexander Hapfelmeier, et al.. (2021). Effect of an Intensified Antibiotic Stewardship Program at an Orthopedic Surgery Department. Surgical Infections. 23(2). 105–112. 7 indexed citations
13.
Ortner, Marion, Christine Hauser, Christoph Schmaderer, et al.. (2019). <p>Decreased Vascular Pulsatility in Alzheimer’s Disease Dementia Measured by Transcranial Color-Coded Duplex Sonography</p>. Neuropsychiatric Disease and Treatment. Volume 15. 3487–3499. 4 indexed citations
14.
15.
Haller, Bernhard, Kurt Ulm, & Alexander Hapfelmeier. (2019). A Simulation Study Comparing Different Statistical Approaches for the Identification of Predictive Biomarkers. Computational and Mathematical Methods in Medicine. 2019. 1–15. 6 indexed citations
16.
Lindner, Michael, et al.. (2019). Quality assessment of tissue samples stored in a specialized human lung biobank. PLoS ONE. 14(4). e0203977–e0203977. 6 indexed citations
17.
Berndt, Maria, Nicole Lange, Yu‐Mi Ryang, et al.. (2018). Value of Diffusion-Weighted Imaging in the Diagnosis of Postoperative Intracranial Infections. World Neurosurgery. 118. e245–e253. 12 indexed citations
18.
Hapfelmeier, Alexander, Kurt Ulm, & Bernhard Haller. (2018). Subgroup identification by recursive segmentation. Journal of Applied Statistics. 45(15). 2864–2887. 5 indexed citations
19.
Ott, Armin & Alexander Hapfelmeier. (2017). Nonparametric Subgroup Identification by PRIM and CART: A Simulation and Application Study. Computational and Mathematical Methods in Medicine. 2017. 1–17. 3 indexed citations
20.
Hapfelmeier, Alexander, Torsten Hothorn, Carina Riediger, & Kurt Ulm. (2014). Estimation of a Predictor’s Importance by Random Forests When There Is Missing Data: RISK Prediction in Liver Surgery using Laboratory Data. The International Journal of Biostatistics. 10(2). 165–183. 6 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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