Niels Keiding

28.1k total citations · 5 hit papers
266 papers, 20.0k citations indexed

About

Niels Keiding is a scholar working on Statistics and Probability, Pediatrics, Perinatology and Child Health and Reproductive Medicine. According to data from OpenAlex, Niels Keiding has authored 266 papers receiving a total of 20.0k indexed citations (citations by other indexed papers that have themselves been cited), including 62 papers in Statistics and Probability, 39 papers in Pediatrics, Perinatology and Child Health and 32 papers in Reproductive Medicine. Recurrent topics in Niels Keiding's work include Statistical Methods and Inference (39 papers), Statistical Methods and Bayesian Inference (34 papers) and Bayesian Methods and Mixture Models (29 papers). Niels Keiding is often cited by papers focused on Statistical Methods and Inference (39 papers), Statistical Methods and Bayesian Inference (34 papers) and Bayesian Methods and Mixture Models (29 papers). Niels Keiding collaborates with scholars based in Denmark, United States and United Kingdom. Niels Keiding's co-authors include Per Kragh Andersen, Richard D. Gill, Ørnulf Borgan, Niels E. Skakkebæk, Aleksander Giwercman, Elisabeth Carlsen, Xavier Bry, Philippe Grandjean, Tina Kold Jensen and Ellen Løkkegaard and has published in prestigious journals such as New England Journal of Medicine, The Lancet and Journal of Clinical Oncology.

In The Last Decade

Niels Keiding

262 papers receiving 18.8k citations

Hit Papers

5 papers align trajectories

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.

Statistical Models Based on Counting Processes

1997 2.1k citations Per Kragh Andersen, Niels Keiding et al. profile →
Evidence for decreasing quality of semen during past 50 years.

1992 2.0k citations Niels Keiding, Niels E. Skakkebæk et al. profile →
Statistical Models Based on Counting Processes

1993 1.9k citations Per Kragh Andersen, Niels Keiding et al. profile →
Male reproductive health and environmental xenoestrogens.

1996 1.2k citations Philippe Grandjean, Tina Kold Jensen et al. profile →
Thrombotic Stroke and Myocardial Infarction with Hormonal Contraception

2012 369 citations Ellen Løkkegaard, Niels Keiding et al. profile →

Peers

Countries citing papers authored by Niels Keiding

Since Specialization

Citations

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

Fields of papers citing papers by Niels Keiding

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Niels Keiding

This figure shows the co-authorship network connecting the top 25 collaborators of Niels Keiding. A scholar is included among the top collaborators of Niels Keiding 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 Niels Keiding. Niels Keiding 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

#	Work	Indexed citations
1	Prevalent cohort studies and unobserved heterogeneity 2019 ·Lifetime Data Analysis ·Niels Keiding, (unknown), Helene C. W. Rytgaard, Anne L. Sørensen	6
2	Comments to Rootzén & Zholud: Human life is unlimited – but short 2018 ·Extremes ·Niels Keiding	2
3	Risk of Stroke With Various Types of Menopausal Hormone Therapies 2017 ·Stroke ·Ellen Løkkegaard, Lars Nielsen, Niels Keiding	34
4	TFR for males in Denmark - calculation and tempo-correction 2015 ·Demographic Research ·(unknown), Ulla Arthur Hvidtfeldt, Niels Keiding	4
5	Cause-specific measures of life years lost 2013 ·Demographic Research ·Per Kragh Andersen, Vladimir Canudas‐Romo, Niels Keiding	34
6	A three-year follow-up on the efficacy of psychosocial interventions for patients with mild dementia and their caregivers: the multicentre, rater-blinded, randomised Danish Alzheimer Intervention Study (DAISY) 2013 ·BMJ Open ·Thien Kieu Thi Phung, Frans Boch Waldorff, (unknown), (unknown), Niels Keiding, (unknown), Volkert Siersma, Jan Sørensen, Rikke Søgaard, (unknown), Asmus Vogel, Gunhild Waldemar	62
7	Same review quality in open versus blinded peer review in "Ugeskrift for Læger". 2012 ·PubMed ·(unknown), Ole Haagen Nielsen, Jacob Rosenberg, Niels Keiding, Torben V. Schroeder	12
8	Educational intervention toward preventive home visitors reduced functional decline in community-living older women 2007 ·Journal of Clinical Epidemiology ·Kirsten Avlund, Mikkel Vass, (unknown), Carsten Hendriksen, Niels Keiding	21
9	Breast cancer incidence, case-fatality and breast cancer mortality in Danish women using hormone replacement therapy—a prospective observational study 2005 ·International Journal of Epidemiology ·Claudia Stahlberg, Elsebeth Lynge, Zorana Jovanovic Andersen, Niels Keiding, Bent Ottesen, Fritz Rank, Erik B. Obel, Anette Tønnes Pedersen	14
10	Studying Time to Pregnancy by Use of a Retrospective Design 2005 ·American Journal of Epidemiology ·Michael Joffe, Jane Key, Nicky Best, Niels Keiding, Thomas Scheike, Tina Kold Jensen	129
11	Increased Risk of Stroke in Hypertensive Women Using Hormone Therapy 2003 ·Archives of Neurology ·Ellen Løkkegaard, (unknown), Berit L. Heitmann, Niels Keiding, Bent Ottesen, Zorana Jovanovic Andersen, Erik B. Obel, (unknown)	34
12	Summary curves for patients transplanted for chronic myeloid leukaemia salvaged by a donor lymphocyte infusion: the current leukaemia‐free survival curve 2000 ·British Journal of Haematology ·John P. Klein, Niels Keiding, Youyi Shu, Richard Szydlo, J M Goldman	33
13	Benchmark modeling of the Faroese methylmercury data 1999 ·Research at the University of Copenhagen (University of Copenhagen) ·Esben Budtz–Jørgensen, Niels Keiding, Philippe Grandjean	4
14	Evidence for decreasing quality of sperm: Authors’ reply 1995 ·Europe PMC (PubMed Central) ·Niels Keiding, Niels E. Skakkebæk	1
15	Epidemiology of renal involvement in newly-diagnosed middle-aged and elderly diabetic patients. Cross-sectional data from the population-based study “Diabetes Care in General Practice”, Denmark 1993 ·Diabetologia ·Niels de Fine Olivarius, Anne Helms Andreasen, Niels Keiding, Carl Erik Mogensen	107
16	Non- and semi-parametric estimation of transition probabilities from censored observation of a non-homogeneous Markov process 1991 ·Research at the University of Copenhagen (University of Copenhagen) ·Per Kragh Andersen, Lærke S. Gasbjerg, Niels Keiding	31
17	Statistical inference in the Lexis diagram 1990 ·Philosophical Transactions of the Royal Society of London Series A Physical and Engineering Sciences ·Niels Keiding	96
18	The exact behaviour of the maximum likelihood estimator in the pure birth process and the pure death process 1977 ·Scandinavian Journal of Statistics ·(unknown), Niels Keiding, (unknown)	10
19	Estimation theory for continuous-time branching processes 1977 ·Krishna B. Athreya, Niels Keiding	22
20	Stochastic stable population theory with continuous time. I 1976 ·Scandinavian Actuarial Journal ·Niels Keiding, Jan M. Hoem	13

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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