T. Chard

9.9k total citations · 1 hit paper
298 papers, 7.5k citations indexed

About

T. Chard is a scholar working on Obstetrics and Gynecology, Pediatrics, Perinatology and Child Health and Public Health, Environmental and Occupational Health. According to data from OpenAlex, T. Chard has authored 298 papers receiving a total of 7.5k indexed citations (citations by other indexed papers that have themselves been cited), including 103 papers in Obstetrics and Gynecology, 97 papers in Pediatrics, Perinatology and Child Health and 52 papers in Public Health, Environmental and Occupational Health. Recurrent topics in T. Chard's work include Pregnancy and preeclampsia studies (82 papers), Birth, Development, and Health (44 papers) and Prenatal Screening and Diagnostics (40 papers). T. Chard is often cited by papers focused on Pregnancy and preeclampsia studies (82 papers), Birth, Development, and Health (44 papers) and Prenatal Screening and Diagnostics (40 papers). T. Chard collaborates with scholars based in United Kingdom, Denmark and United States. T. Chard's co-authors include Ray K. Iles, M. J. Kitau, Howard Cuckle, Y. B. Gordon, J. G. Grudzinskas, A. T. Letchworth, J. W. Densem, N. C. Wathen, R J Lilford and Lesley Rees and has published in prestigious journals such as Nature, The Lancet and The Journal of Clinical Endocrinology & Metabolism.

In The Last Decade

T. Chard

292 papers receiving 6.9k citations

Hit 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.

Maternal serum screening for Down's syndrome in early pregnancy.

1988 709 citations N J Wald, Howard Cuckle et al. BMJ profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
T. Chard United Kingdom	43	2.8k	1.9k	1.3k	1.2k	1.0k	298	7.5k
William N. Spellacy United States	38	1.8k 0.7×	2.0k 1.1×	1.4k 1.1×	1.1k 0.9×	930 0.9×	234	6.5k
Geralyn Lambert‐Messerlian United States	43	4.1k 1.5×	1.7k 0.9×	1.8k 1.3×	927 0.8×	2.1k 2.1×	200	8.0k
Gian Carlo Di Renzo Italy	43	2.9k 1.1×	3.5k 1.9×	1.8k 1.3×	378 0.3×	802 0.8×	306	7.8k
Mark D. Kilby United Kingdom	60	7.1k 2.6×	4.0k 2.1×	2.1k 1.5×	1.5k 1.2×	526 0.5×	361	13.0k
L.P. Shulman United States	35	1.8k 0.6×	1.0k 0.5×	1.2k 0.9×	645 0.5×	913 0.9×	655	5.5k
Joachim W. Dudenhausen Germany	44	3.3k 1.2×	3.1k 1.6×	1.4k 1.1×	390 0.3×	235 0.2×	237	7.2k
Christopher J. Haines Hong Kong	35	1.9k 0.7×	661 0.3×	1.1k 0.8×	417 0.3×	853 0.8×	111	4.9k
Daniel R. Mishell United States	63	2.0k 0.7×	2.3k 1.2×	6.3k 4.7×	2.3k 1.9×	4.7k 4.6×	349	12.3k
Donald Brambilla United States	47	2.2k 0.8×	451 0.2×	1.4k 1.1×	2.6k 2.2×	813 0.8×	144	13.7k
Tony K.H. Chung Hong Kong	53	1.5k 0.5×	2.2k 1.1×	3.1k 2.3×	420 0.3×	517 0.5×	252	9.1k

Countries citing papers authored by T. Chard

Since Specialization

Citations

This map shows the geographic impact of T. Chard'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 T. Chard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. Chard more than expected).

Fields of papers citing papers by T. Chard

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of T. Chard

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

Hills, Frank, et al.. (1996). Mechanism of action of the intrauterine contraceptive device: evidence for a specific biochemical deficiency in the endometrium. Human Reproduction. 11(6). 1220–1222. 11 indexed citations

Chard, T., et al.. (1994). Endometrial protein PP14: a new test of endometrial function?. 3(1). 43–52. 9 indexed citations

Iles, Ray K. & T. Chard. (1993). Molecular insights into the structure and function of human chorionic gonadotrophin. Journal of Molecular Endocrinology. 10(3). 217–234. 13 indexed citations

Johnson, Mark R., A. Abbas, Julian Norman‐Taylor, et al.. (1993). Circulating placental protein 14: in the first trimester of spontaneous and IVF pregnancies. Human Reproduction. 8(2). 323–326. 18 indexed citations

Chapman, Michael, J.G. Grudzinskas, & T. Chard. (1991). The Embryo : normal and abnormal development and growth. Springer eBooks. 17 indexed citations

Perry, Lesley, et al.. (1991). Purification and assay of insulin-like growth factor-binding protein-1. The Journal of Clinical Endocrinology & Metabolism. 128(1). 1 indexed citations

Chard, T.. (1991). Biochemistry and Endocrinology of the Down's Syndrome Pregnancy. Annals of the New York Academy of Sciences. 626(1). 580–596. 20 indexed citations

Shepherd, J. H., et al.. (1991). Transvaginal ultrasound. A reliable basis for clinical management? Case reports. BJOG An International Journal of Obstetrics & Gynaecology. 98(5). 485–486. 3 indexed citations

Wald, N J, Howard Cuckle, J. W. Densem, et al.. (1989). Serum screening for Down's syndrome: Authors' reply. BMJ. 298(6665). 50.4–50. 1 indexed citations

10.

Chard, T.. (1989). The effect of dependence on the performance of Bayes' theorem: an evaluation using a computer simulation. Computer Methods and Programs in Biomedicine. 29(1). 15–19. 11 indexed citations

11.

Howell, R. J. S., et al.. (1989). Inhibition of binding of gonadal steroids to serum binding proteins by non-esterified fatty acids: the influence of chain length and degree of unsaturation. European Journal of Endocrinology. 120(2). 175–179. 10 indexed citations

12.

Wald, N J, Howard Cuckle, J. W. Densem, et al.. (1988). Maternal serum screening for Down's syndrome in early pregnancy.. BMJ. 297(6653). 883–887. 709 indexed citations breakdown →

13.

Chard, T. & J. G. Grudzinskas. (1987). Early pregnancy factor.. PubMed. 8(2 2D Half). 53–6. 7 indexed citations

14.

Wathen, N. C., Les Perry, R J Lilford, & T. Chard. (1984). Interpretation of single progesterone measurement in diagnosis of anovulation and defective luteal phase: observations on analysis of the normal range.. BMJ. 288(6410). 7–9. 90 indexed citations

15.

Seppälä, Markku, et al.. (1980). Use of a rapid chorionic gonadotropin beta subunit radio immunoassay in acute gynecological emergencies. The Lancet. 1(8161). 165–166. 21 indexed citations

16.

Chard, T., et al.. (1978). Pregnancy specific beta1 glycoprotein in fetal and maternal compartments.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 52(1). 43–5. 17 indexed citations

17.

Chard, T., et al.. (1973). Placental Lactogen Levels in Diabetic Pregnancy. BMJ. 2(5858). 80–82. 40 indexed citations

18.

Edwards, Christopher R.W., M. J. Kitau, T. Chard, & G. M. Besser. (1973). Vasopressin Analogue DDAVP in Diabetes Insipidus: Clinical and Laboratory Studies. BMJ. 3(5876). 375–378. 108 indexed citations

19.

Landon, J., et al.. (1972). Placental Lactogen Levels as Guide to Outcome of Threatened Abortion. BMJ. 3(5830). 799–801. 50 indexed citations

20.

Gillespie, Arnold, et al.. (1972). Oxytocin Release by Infused Prostaglandin. BMJ. 1(5799). 543–544. 71 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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