N J Wald

5.0k citations

41 papers · 3.7k indexed · 2 hit papers · h-index 20

Impact in

Obstetrics and Gynecology top 1%
- Pregnancy and preeclampsia studies
- Gestational Diabetes Research and Management
Pediatrics, Perinatology and Child Health top 0.5%
- Prenatal Screening and Diagnostics

Papers in

Pediatrics, Perinatology and Child Health 16
- Prenatal Screening and Diagnostics 12
- Assisted Reproductive Technology and Twin Pregnancy 4
- Birth, Development, and Health 2
Obstetrics and Gynecology 5
- Pregnancy and preeclampsia studies 3

Co-authors: J. W. Densem Carrie Frost Jean Sneddon Michael Gnant R. Stone Jacob A. Canick Patrick Royston Glenn E. Palomaki
Journals: Prenatal Diagnosis (6 papers)Thorax (4 papers)Journal of Medical Screening (2 papers)BJOG An International Journal of Obstetrics & Gynaecology (2 papers)Obstetrical & Gynecological Survey (2 papers)
Partner nations: United Kingdom United States Netherlands

In The Last Decade

N J Wald

40 papers receiving 3.5k citations

Hit Papers

align trajectories log scale

Prevention of neural tube defects: results of the Medical Research Council Vitamin Study. MRC Vitamin Study Research Group. 1991 · 1.5k citations

Peers

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-authors

The 25 scholars most cited alongside N J Wald, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with N J Wald Line = papers co-authored together N J Wald links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	First-Trimester or Second-Trimester Screening, or Both, for Down???s Syndrome Obstetrical & Gynecological Survey ·Fergal D. Malone, Jacob A. Canick, Robert H. Ball, David A. Nyberg, Christine H. Comstock, Radek Bukowski, Richard L. Berkowitz, Susan J. Gross, Lorraine Dugoff, Sabrina Craigo, Ilan E. Timor‐Tritsch, Stephen R. Carr, Honor M. Wolfe, Kimberly A. Dukes, Diana W. Bianchi, Alicja R. Rudnicka, Allan Hackshaw, Geralyn Lambert‐Messerlian, N J Wald, Mary E. D Alton	2006	102
2	The controlled antenatal thyroid screening study (CATS) - first observations John H. Lazarus, N J Wald, C Angele, Lovya George, Paul T. Seed, Isobel P. Taylor, A. B. Parkes	2003	2
3	Teleoanalysis: combining data from different types of study BMJ ·N J Wald, (unknown)	2003	33
4	Advances in antenatal screening for Down Syndrome Best Practice & Research Clinical Obstetrics & Gynaecology ·N J Wald, Allan Hackshaw	2000	47
5	Serum markers for Down's syndrome in women who have had in vitro fertilisation: implications for antenatal screening BJOG An International Journal of Obstetrics & Gynaecology ·N J Wald, Nathaniel B. White, Joan K. Morris, Wayne J. Huttly, Jacob A. Canick	1999	77
6	Why heart disease mortality is low in France: the time lag explanation Commentary: Alcohol and other dietary factors may be important Commentary: Intrauterine nutrition may be important Commentary: Heterogeneity of populations should be taken into account Authors' response BMJ ·Matthew Law, N J Wald, Meir J. Stampfer, Eric B. Rimm, D.J.P. Barker, J. P. Mackenbach, Anton E. Kunst	1999	123
7	The pattern of maternal serum inhibin-A concentrations in the second trimester of pregnancy Prenatal Diagnosis ·Hilary Watt, N J Wald, Wayne J. Huttly	1998	9
8	Authors' reply BMJ ·N J Wald, P. Murphy, P J Major, Carole Parkes, Chris Frost, Joy Townsend	1996	1
9	Repeat maternal serum testing for down's syndrome screening using multiple markers with special reference to free α and free β‐hCG Prenatal Diagnosis ·Allan Hackshaw, J. W. Densem, N J Wald	1995	14
10	Mortality in relation to tar yield of cigarettes: a prospective study of four cohorts BMJ ·Jin-Ling Tang, Joan K. Morris, N J Wald, David Hole, M. J. Shipley, Hugh Tunstall‐Pedoe	1995	51
11	Folic Acid and the Prevention of Neural Tube Defects: The Need for Public Health Action Forum of nutrition/Bibliotheca Nutritio et dieta ·N J Wald	1995	0
12	Maternal serum free α‐ and free β‐human chorionic gonadotrophin in pregnancies with insulin‐dependent diabetes mellitus: Implications for screening for Down's syndrome Prenatal Diagnosis ·N J Wald, J. W. Densem, R. Cheng, Stephan Collishaw	1994	6
13	Maternal serum free α‐human chorionic gonadotrophin levels in twin pregnancies: Implications for screening for Down's syndrome Prenatal Diagnosis ·N J Wald, J. W. Densem	1994	20
14	Prevention of neural tube defects: results of the Medical Research Council Vitamin Study. MRC Vitamin Study Research Group. PubMed ·Jean Sneddon, J. W. Densem, N J Wald, Carrie Frost, R. Stone, Michael Gnant Hit paper breakdown →	1991	1528
15	Maternal smoking habits and Down's syndrome Prenatal Diagnosis ·H S Cuckle, Eva Alberman, N J Wald, Patrick Royston, Gary Knight	1990	26
16	Serum screening for Down's syndrome: Authors' reply BMJ ·N J Wald, Howard Cuckle, J. W. Densem, Kiran Nanchahal, Patrick Royston, T. Chard, J E Haddow, George J. Knight, Glenn E. Palomaki, Jacob A. Canick	1989	1
17	Maternal serum screening for Down's syndrome in early pregnancy. BMJ ·N J Wald, Howard Cuckle, J. W. Densem, Kiran Nanchahal, Patrick Royston, T. Chard, James E. Haddow, George J. Knight, Glenn E. Palomaki, Jacob A. Canick Hit paper breakdown →	1988	709
18	Controlled trial of three different antismoking interventions in general practice. BMJ ·Konrad Jamrozik, Martin Vessey, G Fowler, N J Wald, Gillian Parker, Helen Van Vunakis	1984	214
19	Inhaling and lung cancer: an anomaly explained. PubMed ·N J Wald, M Idle, J Boreham, A Bailey	1983	5
20	Survival and handicap of infants with spina bifida. Archives of Disease in Childhood ·R Althouse, N J Wald	1980	28

About N J Wald

N J Wald is a scholar working on Pediatrics, Perinatology and Child Health, Obstetrics and Gynecology, Speech and Hearing, Physiology and Rheumatology, having authored 41 papers that have together received 3.7k indexed citations. Recurring topics across this work include Prenatal Screening and Diagnostics (12 papers), Smoking Behavior and Cessation (8 papers), Folate and B Vitamins Research (5 papers), Assisted Reproductive Technology and Twin Pregnancy (4 papers), Pregnancy and preeclampsia studies (3 papers), Noise Effects and Management (3 papers), Birth, Development, and Health (2 papers) and Chronic Obstructive Pulmonary Disease (COPD) Research (2 papers). The work is most often cited by research in Obstetrics and Gynecology (681 citations), Pediatrics, Perinatology and Child Health (1.7k citations), Rheumatology (1.2k citations), Public Health, Environmental and Occupational Health (770 citations) and Infectious Diseases (339 citations). N J Wald has collaborated with scholars based in United Kingdom, United States and Netherlands. Frequent co-authors include J. W. Densem, Carrie Frost, Jean Sneddon, Michael Gnant, R. Stone, Jacob A. Canick, Patrick Royston, Glenn E. Palomaki, James E. Haddow and Howard Cuckle. Their work appears in journals such as Prenatal Diagnosis, Thorax, Journal of Medical Screening, BJOG An International Journal of Obstetrics & Gynaecology and Obstetrical & Gynecological Survey.

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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