N J Wald

3.8k total citations · 1 hit paper
42 papers, 2.2k citations indexed

About

N J Wald is a scholar working on Pediatrics, Perinatology and Child Health, Obstetrics and Gynecology and Infectious Diseases. According to data from OpenAlex, N J Wald has authored 42 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Pediatrics, Perinatology and Child Health, 7 papers in Obstetrics and Gynecology and 6 papers in Infectious Diseases. Recurrent topics in N J Wald's work include Prenatal Screening and Diagnostics (17 papers), Parvovirus B19 Infection Studies (6 papers) and Pregnancy and preeclampsia studies (5 papers). N J Wald is often cited by papers focused on Prenatal Screening and Diagnostics (17 papers), Parvovirus B19 Infection Studies (6 papers) and Pregnancy and preeclampsia studies (5 papers). N J Wald collaborates with scholars based in United Kingdom, United States and Hungary. N J Wald's co-authors include Chris Frost, M R Law, A Hackshaw, Hilary Watt, H S Cuckle, Anne Kennard, P. E. Polani, J Brock, Richárd Pető and Allan Hackshaw and has published in prestigious journals such as Environmental Health Perspectives, British Journal of Cancer and Clinical Chemistry.

In The Last Decade

N J Wald

41 papers receiving 2.0k 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-alpha-fetoprotein measurement in antenatal screening for anencephaly and spina bifida in early pregnancy. Report of U.K. collaborative study on alpha-fetoprotein in relation to neural-tube defects.

1977 385 citations N J Wald, H S Cuckle et al. PubMed profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
N J Wald United Kingdom	22	973	463	354	354	294	42	2.2k
N J Wald United Kingdom	20	1.7k 1.7×	770 1.7×	701 2.0×	339 1.0×	140 0.5×	41	3.7k
Naji Younes United States	21	647 0.7×	211 0.5×	326 0.9×	181 0.5×	738 2.5×	60	2.4k
Charles T. Quinn United States	37	1.3k 1.3×	227 0.5×	120 0.3×	186 0.5×	96 0.3×	157	4.4k
Irwin R. Merkatz United States	37	2.5k 2.6×	741 1.6×	629 1.8×	258 0.7×	112 0.4×	133	4.5k
M.A.F. El‐Hazmi Saudi Arabia	25	482 0.5×	333 0.7×	166 0.5×	74 0.2×	151 0.5×	133	2.7k
Sarah Krull Abe Japan	20	411 0.4×	324 0.7×	134 0.4×	92 0.3×	384 1.3×	77	1.8k
Leon Gordis United States	31	311 0.3×	893 1.9×	354 1.0×	286 0.8×	41 0.1×	76	2.8k
Antonio Addis Italy	25	600 0.6×	945 2.0×	344 1.0×	78 0.2×	41 0.1×	121	2.7k
Enrique Terán Ecuador	24	487 0.5×	246 0.5×	78 0.2×	134 0.4×	101 0.3×	121	1.7k
Sanne J. Gordijn Netherlands	27	2.4k 2.5×	446 1.0×	323 0.9×	540 1.5×	208 0.7×	130	4.3k

Countries citing papers authored by N J Wald

Since Specialization

Citations

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

Fields of papers citing papers by N J Wald

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by N J Wald. 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 N J Wald. The network helps show where N J Wald may publish in the future.

Co-authorship network of co-authors of N J Wald

This figure shows the co-authorship network connecting the top 25 collaborators of N J Wald. A scholar is included among the top collaborators of N J Wald 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 N J Wald. N J Wald 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

Forey, Barbara, et al.. (2004). International smoking statistics (2nd edition). A collection of historical data from 30 economically developed countries. Explore Bristol Research. 2 indexed citations

Wald, N J, et al.. (2003). “Polypill” to fight cardiovascular disease: Authors' reply. BMJ. 327(7418). 809.2–810. 5 indexed citations

Hackshaw, Allan & N J Wald. (2001). Assessment of the value of reporting partial screening results in prenatal screening for Down syndrome. Prenatal Diagnosis. 21(9). 737–740. 24 indexed citations

Wald, N J, Hilary Watt, L. George, et al.. (2000). Adding free to total prostate-specific antigen levels in trials of prostate cancer screening. British Journal of Cancer. 82(3). 731–736. 6 indexed citations

Morris, Joan K., N J Wald, & Hilary Watt. (1999). Fetal loss in Down syndrome pregnancies. Prenatal Diagnosis. 19(2). 142–145. 158 indexed citations

Wald, N J, Hilary Watt, J E Haddow, & George J. Knight. (1998). Screening for Down syndrome at 14 weeks of pregnancy. Prenatal Diagnosis. 18(3). 291–293. 14 indexed citations

Wald, N J & A Hackshaw. (1996). Cigarette smoking: an epidemiological overview. British Medical Bulletin. 52(1). 3–11. 178 indexed citations

Watt, Hilary, N J Wald, David J. Smith, Anne Kennard, & J. W. Densem. (1996). EFFECT OF ALLOWING FOR ETHNIC GROUP IN PRENATAL SCREENING FOR DOWN'S SYNDROME. Prenatal Diagnosis. 16(8). 691–698. 56 indexed citations

Macintosh, M., N J Wald, T. Chard, et al.. (1995). Selective miscarriage of Down's syndrome fetuses in women aged 35 years and older. BJOG An International Journal of Obstetrics & Gynaecology. 102(10). 798–801. 43 indexed citations

10.

Wald, N J, L. George, Hilary Watt, et al.. (1995). Prospective observational study to assess value of prostate specific antigen as screening test for prostate cancer. BMJ. 311(7016). 1340–1343. 57 indexed citations

11.

Wald, N J, Allan Hackshaw, & J Chamberlain. (1994). The efficacy and safety of periodic mammographic breast cancer screening: Summary of report of the European Society of Mastology. Clinical Radiology. 49(9). 592–593. 3 indexed citations

12.

Hackshaw, Allan, et al.. (1993). Neural tube defects and serum zinc. BJOG An International Journal of Obstetrics & Gynaecology. 100(8). 746–749. 35 indexed citations

13.

Wald, N J, Anne Kennard, J. W. Densem, et al.. (1992). Antenatal maternal serum screening for Down's syndrome: results of a demonstration project.. BMJ. 305(6850). 391–394. 216 indexed citations

14.

Wald, N J. (1987). Retinol, beta-carotene and cancer.. PubMed. 6(4). 635–51. 31 indexed citations

15.

Cuckle, Howard, Kiran Nanchahal, & N J Wald. (1987). Maternal serum alpha‐fetoprotein and ethnic origin. BJOG An International Journal of Obstetrics & Gynaecology. 94(11). 1111–1112. 11 indexed citations

16.

Wald, N J, H S Cuckle, Robert D. Barlow, et al.. (1985). The effect of vitamin A supplementation on serum retinol and retinol binding protein levels. Cancer Letters. 29(2). 203–213. 21 indexed citations

17.

Barlow, Robert D., Howard Cuckle, & N J Wald. (1984). The identification of false‐positive amniotic fluid acetylcholinesterase results due to fetal calf serum contamination. BJOG An International Journal of Obstetrics & Gynaecology. 91(10). 986–988. 8 indexed citations

18.

Conner, Mary K. & N J Wald. (1981). Chromosomal methods in population studies.. Environmental Health Perspectives. 42. 107–113. 5 indexed citations

19.

Wald, N J, et al.. (1979). Maternal serum alpha-fetoprotein in relation to zygosity.. BMJ. 1(6161). 455–455. 6 indexed citations

20.

Wald, N J, et al.. (1977). Maternal serum-alpha-fetoprotein measurement in antenatal screening for anencephaly and spina bifida in early pregnancy. Report of U.K. collaborative study on alpha-fetoprotein in relation to neural-tube defects.. PubMed. 1(8026). 1323–32. 385 indexed citations breakdown →

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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