Per Winkel

16.1k total citations · 2 hit papers
174 papers, 6.6k citations indexed

About

Per Winkel is a scholar working on Cardiology and Cardiovascular Medicine, Epidemiology and Surgery. According to data from OpenAlex, Per Winkel has authored 174 papers receiving a total of 6.6k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Cardiology and Cardiovascular Medicine, 25 papers in Epidemiology and 24 papers in Surgery. Recurrent topics in Per Winkel's work include Clinical Laboratory Practices and Quality Control (11 papers), Statistical Methods in Clinical Trials (10 papers) and Hormonal and reproductive studies (9 papers). Per Winkel is often cited by papers focused on Clinical Laboratory Practices and Quality Control (11 papers), Statistical Methods in Clinical Trials (10 papers) and Hormonal and reproductive studies (9 papers). Per Winkel collaborates with scholars based in Denmark, United States and Sweden. Per Winkel's co-authors include Christian Gluud, Jørn Wetterslev, Janus Christian Jakobsen, Bernard E. Statland, Theis Lange, Henning Bokelund, Jane Lindschou, Jens Kastrup, Erik Kjøller and Gorm Boje Jensen and has published in prestigious journals such as The Lancet, Circulation and SHILAP Revista de lepidopterología.

In The Last Decade

Per Winkel

168 papers receiving 6.3k citations

Hit Papers

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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.

When and how should multiple imputation be used for handling missing data in randomised clinical trials – a practical guide with flowcharts

2017 1.6k citations Janus Christian Jakobsen, Christian Gluud et al. profile →
Thresholds for statistical and clinical significance in systematic reviews with meta-analytic methods

2014 508 citations Janus Christian Jakobsen, Jørn Wetterslev et al. profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
Per Winkel	1.2k	1.1k	942	825	589	174	6.6k
J. Lau	1.4k 1.2×	1.1k 1.0×	659 0.7×	604 0.7×	687 1.2×	35	7.5k
D G Altman	1.3k 1.1×	690 0.6×	730 0.8×	788 1.0×	681 1.2×	25	7.8k
Eva Andersson	1.0k 0.9×	899 0.8×	914 1.0×	425 0.5×	917 1.6×	116	6.3k
Steve Doucette	938 0.8×	1.1k 1.0×	817 0.9×	898 1.1×	1.4k 2.3×	158	7.1k
Thomas Sullivan	862 0.7×	862 0.8×	1.7k 1.8×	626 0.8×	866 1.5×	188	6.8k
Ferrán Catalá-López	1.5k 1.3×	1.0k 1.0×	934 1.0×	633 0.8×	997 1.7×	127	8.9k
Philip Ryan	2.1k 1.8×	1.4k 1.3×	1.4k 1.5×	749 0.9×	1.0k 1.7×	165	9.3k
Dan Jackson	1.4k 1.2×	898 0.8×	1.0k 1.1×	634 0.8×	1.4k 2.4×	127	10.4k
Itzhak Shapira	1.4k 1.2×	1.2k 1.1×	2.4k 2.6×	675 0.8×	1.3k 2.1×	292	7.9k
Enzo Grossi	929 0.8×	538 0.5×	659 0.7×	767 0.9×	457 0.8×	294	6.6k

Countries citing papers authored by Per Winkel

Since Specialization

Citations

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

Fields of papers citing papers by Per Winkel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Per Winkel

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

All Works

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20 of 20 papers shown

Winkel, Per, Janus Christian Jakobsen, Jørgen Hilden, et al.. (2020). Prognostic value of 12 novel cardiological biomarkers in stable coronary artery disease. A 10-year follow-up of the placebo group of the Copenhagen CLARICOR trial. BMJ Open. 10(8). e033720–e033720. 1 indexed citations

Jakobsen, Janus Christian, Christian Ovesen, Per Winkel, et al.. (2019). Power estimations for non-primary outcomes in randomised clinical trials. BMJ Open. 9(6). e027092–e027092. 20 indexed citations

Carlsson, Axel C., Toralph Ruge, Erik Kjøller, et al.. (2018). 10‐Year Associations Between Tumor Necrosis Factor Receptors 1 and 2 and Cardiovascular Events in Patients With Stable Coronary Heart Disease: A CLARICOR (Effect of Clarithromycin on Mortality and Morbidity in Patients With Ischemic Heart Disease) Trial Substudy. Journal of the American Heart Association. 7(9). 31 indexed citations

Moons, Philip, Christian Gluud, Per Winkel, et al.. (2017). Early rehabilitation after coronary artery bypass grafting - results from the SheppHeartCABG trial. European Journal of Preventive Cardiology. 24.

Koushede, Vibeke, Carina Sjöberg Brixval, Lau Caspar Thygesen, et al.. (2017). Antenatal small-class education versus auditorium-based lectures to promote positive transitioning to parenthood – A randomised trial. PLoS ONE. 12(5). e0176819–e0176819. 15 indexed citations

Brixval, Carina Sjöberg, Lau Caspar Thygesen, Christian Gluud, et al.. (2016). Effect of antenatal education in small classes versus standard auditorium-based lectures on use of pain relief during labour and of obstetric interventions: results from the randomised NEWBORN trial. BMJ Open. 6(6). e010761–e010761. 39 indexed citations

Knorr, Ulla, Pernille Koefoed, Christian Gluud, et al.. (2016). Effect of escitalopram versus placebo on GRα messenger RNA expression in peripheral blood cells of healthy individuals with a family history of depression – a secondary outcome analysis from the randomized AGENDA trial. Nordic Journal of Psychiatry. 70(4). 297–302. 5 indexed citations

Watt, Torquil, Per Karkov Cramon, Jakob Bue Bjørner, et al.. (2013). Selenium supplementation for patients with Graves� hyperthyroidism (the GRASS trial): study protocol for a randomized controlled trial. Trials. 14(1). 119–119. 53 indexed citations

Risom, Signe Stelling, Ann‐Dorthe Zwisler, Trine Bernholdt Rasmussen, et al.. (2013). The effect of integrated cardiac rehabilitation versus treatment as usual for atrial fibrillation patients treated with ablation: the randomised CopenHeart _RFA trial protocol. BMJ Open. 3(2). e002377–e002377. 19 indexed citations

10.

Palm, Pernille, Ann‐Dorthe Zwisler, Jesper Hastrup Svendsen, et al.. (2013). The CopenHeartSF trial—comprehensive sexual rehabilitation programme for male patients with implantable cardioverter defibrillator or ischaemic heart disease and impaired sexual function: protocol of a randomised clinical trial. BMJ Open. 3(11). e003967–e003967. 17 indexed citations

11.

Knorr, Ulla, Maj Vinberg, Erik Lykke Mortensen, et al.. (2012). Effect of Chronic Escitalopram versus Placebo on Personality Traits in Healthy First-Degree Relatives of Patients with Depression: A Randomized Trial. PLoS ONE. 7(2). e31980–e31980. 13 indexed citations

12.

Jakobsen, Janus Christian, Christian Gluud, Mickey Kongerslev, et al.. (2012). ‘Third wave’ cognitive therapy versus mentalization-based therapy for major depressive disorder. A protocol for a randomised clinical trial. BMC Psychiatry. 12(1). 232–232. 5 indexed citations

13.

Knorr, Ulla, Maj Vinberg, Marianne Klose, et al.. (2011). Escitalopram and Neuroendocrine Response in Healthy First-Degree Relatives to Depressed Patients – A Randomized Placebo-Controlled Trial. PLoS ONE. 6(6). e21224–e21224. 11 indexed citations

14.

Krarup, Lars-Henrik, Janika Kõrv, Grethe Andersen, et al.. (2009). ExStroke Pilot Trial of the effect of repeated instructions to improve physical activity after ischaemic stroke: a multinational randomised controlled clinical trial. BMJ. 339(jul20 3). b2810–b2810. 100 indexed citations

15.

Jørgensen, Lone, Susanne Gammelgaard Bøttcher, Eva Christensen, Søren Lundbye‐Christensen, & Per Winkel. (1996). Monitoring small cell lung cancer (SCLC) by serum neuron specific enolase (S-NSE) analyses using dynamic linear models. VBN Forskningsportal (Aalborg Universitet). 11(4). 15–21. 1 indexed citations

16.

Nielsen, Dorte, Vibeke Schiøler, Torben Skovsgaard, et al.. (1993). A novel method for monitoring high-risk breast cancer with tumor markers: CA 15.3 compared to CEA and TPA. Annals of Oncology. 4(10). 861–869. 22 indexed citations

17.

Statland, Bernard E. & Per Winkel. (1977). Effects of Preanalytical Factors on the Intraindividual Variation of Analytes in the Blood of Healthy Subjects: Consideration of Preparation of the Subject and Time of Venipuncture. CRC Critical Reviews in Clinical Laboratory Sciences. 8(2). 105–144. 50 indexed citations

18.

Statland, Bernard E., et al.. (1976). Factors contributing to intra-individual variation of serum constituents: Physiological day-to-day variation in concentrations of 10 specific proteins in sera of healthy subjects.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 22(10). 1635–8. 35 indexed citations

19.

Gaub, Janne E., Per Winkel, & L Ranek. (1976). Cytophotometry of feulgen-naphtol yellow S stained liver cells--a computerized method for the calculation of nuclear protein.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 20(4). 356–60. 10 indexed citations

20.

Winkel, Per, et al.. (1975). Diagnostic value of routine liver tests.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 21(1). 71–5. 30 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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