Last updated on

New England Journal of Medicine
3 Year Impact Factor IF - Analysis · Trend · Prediction · Ranking


Journal Impact IF

2021-2022

19.125

18.0%

3-Year IF Trend

Researchain
One-click to visualize your research performance

Researchain
One-click to visualize your research performance

Researchain
One-click to visualize your research performance

Researchain
One-click to visualize your research performance

Popular Journals

Highly Cited Articles

New England Journal of Medicine

High Impact Research Articles
Publication Title Author Listing
Publication Title Author Listing
· · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· ·
· · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· ·
· · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · ·
· ·
· · · · ·
· · · · · · · · · · · · ·
· · · · · · · · · · · · · · · ·
· ·
· ·
·
· · · · · · · · · · ·
· ·
· · ·
· · · · · · · ·
· · · · ·
·
· · ·
· · ·
· · · ·
·
· · ·
· ·
·
· · · · ·

Highly Cited Keywords

New England Journal of Medicine

High Impact Research Keywords

Journal Impact IF Ranking

New England Journal of Medicine

Journal Impact IF Ranking
Subcategory Quartile Rank Percentile
Medicine (all) Q1 2/793

Medicine (all) 99%

Journal Impact IF Ranking

Related Journals

New England Journal of Medicine

Similar Journals

New England Journal of Medicine

The 2021-2022 3 Year Journal Impact IF of New England Journal of Medicine is 19.125, which is just updated in 2022.

New England Journal of Medicine Impact Factor

New England Journal of Medicine

Journal Key Metrics
Journal Title New England Journal of Medicine
ISSN 0028-4793
ISSN (Online) 1533-4406
Publisher
Massachussetts Medical Society
Publication Frequency
Weekly
Coverage
1945 - Present
Open Access
NO
Language
English
Publication Fee
Homepage
Submit Manuscript
Wikipedia

New England Journal of Medicine

Impact Factor 2022-2023 Prediction
New England Journal of Medicine Impact Factor Predition System

New England Journal of Medicine Impact Factor Prediction System is now online. You can start share your valuable insights with the community.

Predict Check All Preditions

What is Impact Factor?

The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly average number of citations of articles published in the last two years in a given journal. It is frequently used as a proxy for the relative importance of a journal within its field; journals with higher impact factor values are often deemed to be more important, or carry more intrinsic prestige in their respective fields, than those with lower values.

New England Journal of Medicine | Academic Accelerator - About the Impact Factor

Impact factor is commonly used to evaluate the relative importance of a journal within its field and to measure the frequency with which the “average article” in a journal has been cited in a particular time period. Journal which publishes more review articles will get highest IFs. Journals with higher IFs believed to be more important than those with lower ones. According to Eugene Garfield “impact simply reflects the ability of the journals and editors to attract the best paper available.” Journal which publishes more review articles will get maximum IFs. The Impact Factor of an academic journal is a scientometric Metric that reflects the yearly average number of citations that recent articles published in a given journal received. It is frequently used as a Metric for the relative importance of a journal within its field; journals with higher Impact Factor are often deemed to be more important than those with lower ones. The New England Journal of Medicine Impact Factor IF measures the average number of citations received in a particular year (2021) by papers published in the New England Journal of Medicine during the two preceding years (2019-2020). Note that 2021 Impact Factor are reported in 2022; they cannot be calculated until all of the 2021 publications have been processed by the indexing agency. New journals, which are indexed from their first published issue, will receive an impact factor after two years of indexing; in this case, the citations to the year prior to Volume 1, and the number of articles published in the year prior to Volume 1, are known zero values. Journals that are indexed starting with a volume other than the first volume will not get an impact factor until they have been indexed for three years. Occasionally, Journal Citation Reports assigns an impact factor to new journals with less than two years of indexing, based on partial citation data. The calculation always uses two complete and known years of item counts, but for new titles one of the known counts is zero. Annuals and other irregular publications sometimes publish no items in a particular year, affecting the count. The impact factor relates to a specific time period; it is possible to calculate it for any desired period. In addition to the 2-year Impact Factor, the 3-year Impact Factor, 4-year Impact Factor, 5-year Impact Factor, Real-Time Impact Factor can provide further insights and factors into the impact of New England Journal of Medicine.

History

The impact factor was devised by Eugene Garfield, the founder of the Institute for Scientific Information (ISI). Impact factors are calculated yearly starting from 1975 for journals listed in the Journal Citation Reports (JCR). ISI was acquired by Thomson Scientific & Healthcare in 1992, and became known as Thomson ISI. In 2018, Thomson ISI was sold to Onex Corporation and Baring Private Equity Asia. They founded a new corporation, Clarivate, which is now the publisher of the JCR.

Use

The impact factor is used to compare different journals within a certain field. The Web of Science indexes more than 11,500 science and social science journals. Journal impact factors are often used to evaluate the merit of individual articles and individual researchers. This use of impact factors was summarised by Hoeffel:

Impact Factor is not a perfect tool to measure the quality of articles but there is nothing better and it has the advantage of already being in existence and is, therefore, a good technique for scientific evaluation. Experience has shown that in each specialty the best journals are those in which it is most difficult to have an article accepted, and these are the journals that have a high impact factor. Most of these journals existed long before the impact factor was devised. The use of impact factor as a measure of quality is widespread because it fits well with the opinion we have in each field of the best journals in our specialty....In conclusion, prestigious journals publish papers of high level. Therefore, their impact factor is high, and not the contrary.

Eugene Garfield

In brief, Impact factors may be used by:
  • Authors to decide where to submit an article for publication.
  • Libraries to make collection development decisions
  • Academic departments to assess academic productivity
  • Academic departments to make decisions on promotion and tenure.
As impact factors are a journal-level metric, rather than an article- or individual-level metric, this use is controversial. Garfield agrees with Hoeffel,but warns about the "misuse in evaluating individuals" because there is "a wide variation [of citations] from article to article within a single journal". Other things to consider about Impact Factors:
  • Many journals do not have an impact factor.
  • The impact factor cannot assess the quality of individual articles. Even if citations were evenly distributed among articles, the impact factor would only measure the interests of other researchers in an article, not its importance and usefulness.
  • Only research articles, technical notes and reviews are “citable” items. Editorials, letters, news items and meeting abstracts are “non-citable items”.
  • Only a small percentage of articles are highly cited and they are found in a small subset of journals. This small proportion accounts for a large percentage of citations.
  • Controversial papers, such as those based on fraudulent data, may be highly cited, distorting the impact factor of a journal.
  • Citation bias may exist. For example, English language resources may be favoured. Authors may cite their own work.
Moreover, informed and careful use of these impact data is essential, and should be based on a thorough understanding of the methodology used to generate impact factors. There are controversial aspects of using impact factors:
  • It is not clear whether the number of times a paper is cited measures its actual quality.
  • Some databases that calculate impact factors fail to incorporate publications including textbooks, handbooks and reference books.
  • Certain disciplines have low numbers of journals and usage. Therefore, one should only compare journals or researchers within the same discipline.
  • Review articles normally are cited more often and therefore can skew results.
  • Self-citing may also skew results.
  • Some resources used to calculate impact factors have inadequate international coverage.
  • Editorial policies can artificially inflate an impact factor.
Impact factors have often been used in advancement and tenure decision-making. Many recognize that this is a coarse tool for such important decisions, and that a multitude of factors should be taken into account in these deliberations. When considering the use of the impact factor (IF), keep these aspects in mind:
  • IF analysis is limited to citations from the journals indexed by the Web of Science/Web of Knowledge. Currently, the Web of Science indexes only 8621 journals across the full breadth of the sciences, and just 3121 in the social sciences.
  • A high IF/citation rate says nothing about the quality -- or even, validity -- of the references being cited. Notorious or even retracted articles often attract a lot of attention, hence a high number of citations. The notority related to the first publication on "cold fusion" is one such example.
  • Journals that publish more "review articles" are often found near the top of the rankings. While not known for publishing new, creative findings, these individual articles tend to be heavily cited.
  • The IF measures the average number of citations to articles in the journal -- given this, a small number of highly-cited articles will skew the figure.
  • It takes several years for new journals to be added to the list of titles indexed by the Web of Science/Web of Knowledge, so these newer titles will be under-represented.
  • It's alleged that journal editors have learned to "game" the system, encouraging authors to cite their works previously published in the same journal.
Comparing Journals Across Disciplines? Not a good idea! Using Impact Factors within a given discipline should only be done with great care, as described above. Using impact factor data to compare journals across disciplines is even more problematic. Here are some of the reasons:
  • Disciplines where older literature is still referenced, such as Chemistry and Mathematics, offer challenges to the methodolgy since older citations (older than two years) are not used to calculate the impact factor for a given journal. (Five-year impact factor analysis, which can be calculated using the Journal Citation Index database, helps smooth out this problem only to some degree.)
  • Different disciplines have different practices regarding tendency to cite larger numbers of references. Higher overall citation rates will bump upward impact factor measurements.
  • Where it's common for large numbers of authors to collaborate on a single paper, such as in Physics, the tendency of authors to cite themselves (and in this case, more authors) will result in increased citation rates.

Pros and Cons of the Impact Factor

Pros:

  • A vetted, established metric for measuring journal impact within a discipline.
  • Designed to eliminate bias based on journal size and frequency.
Cons:
  • Individual articles makes an uneven contribution to overall Impact Factor.
  • Impact Factor does not account for certain things, things like context (postive or negative citaion) and intentionality (self-citation).
  • The metric is proprietary to and bound by the contents of the Thomson Reuters database.
  • Citations, on which the Impact Factor is based, count for less than 1% of an article's overall use.

Criticism

Numerous critiques have been made regarding the use of impact factors. A 2007 study noted that the most fundamental flaw is that impact factors present the mean of data that are not normally distributed, and suggested that it would be more appropriate to present the median of these data. There is also a more general debate on the validity of the impact factor as a measure of journal importance and the effect of policies that editors may adopt to boost their impact factor (perhaps to the detriment of readers and writers). Other criticism focuses on the effect of the impact factor on behavior of scholars, editors and other stakeholders. Others have made more general criticisms, arguing that emphasis on impact factor results from negative influence of neoliberal policies on academia claiming that what is needed is not just replacement of the impact factor with more sophisticated metrics for science publications but also discussion on the social value of research assessment and the growing precariousness of scientific careers in higher education.
Experts stress that there are limitations in using impact factors to evaluate a scholar's work. There are many reasons cited for not relying on impact factor alone to evaluate the output of a particular individual. Among these are the following:

  • A single factor is not sufficient for evaluating an author's work.
  • Journal values are meaningless unless compared within the same discipline. Impact factors vary among disciplines.
  • The impact factor was originally devised to show the impact of a specific journal, not a specific scholar. The quality and impact of the author's work may extend beyond the impact of a particular journal.
According to Jim Testa, a researcher for ThomsonReuters Scientific, the most widespread misuse of the Impact Factor is to evaluate the work of an individual author (instead of a journal). "To say that because a researcher is publishing in a certain journal, he or she is more influential or deserves more credit is not necessarily true. There are many other variables to consider." (interview 6/26/2008 in Thomson Reuters blog entry)

New England Journal of Medicine
Journal Profile

About

The New England Journal of Medicine (NEJM) is the world’s leading medical journal and website. Published continuously for over 200 years, NEJM delivers high-quality, peer-reviewed research and interactive clinical content to physicians, educators, and the global medical community. Our mission is to bring physicians the best research and information at the intersection of biomedical science and clinical practice and to present this information in understandable and clinically useful formats that inform health care delivery and improve patient outcomes. The New England Journal of Medicine (NEJM) is a weekly medical journal published by the Massachusetts Medical Society. It is among the most prestigious peer-reviewed medical journals as well as the oldest continuously published one.

ISSN
0028-4793
ISSN

The ISSN of New England Journal of Medicine is 0028-4793 . An ISSN is an 8-digit code used to identify newspapers, journals, magazines and periodicals of all kinds and on all media–print and electronic.

ISSN (Online)
1533-4406
ISSN (Online)

The ISSN (Online) of New England Journal of Medicine is 1533-4406 . An ISSN is an 8-digit code used to identify newspapers, journals, magazines and periodicals of all kinds and on all media–print and electronic.

Publisher
Massachussetts Medical Society
Publisher

New England Journal of Medicine is published by Massachussetts Medical Society .

Publication Frequency
Weekly
Publication Frequency

New England Journal of Medicine publishes reports Weekly .

Coverage
1945 - Present
Coverage

The Publication History of New England Journal of Medicine covers 1945 - Present .

Open Access
NO
Open Access

Publication Fee
Publication Fee

Language
English
Language

The language of New England Journal of Medicine is English .

Country/Region
United States
Country/Region

The publisher of New England Journal of Medicine is Massachussetts Medical Society , which locates in United States .

International Collaboration Trend

New England Journal of Medicine

Cited Documents Trend

New England Journal of Medicine

Total Publications
100463
Total Citations
11644675

Annual Publication Volume

New England Journal of Medicine

Annual Citation Record

New England Journal of Medicine

Publications Cites Dataset

New England Journal of Medicine

Year Publications Citations
Year Publications Citations
1922 225 71
1923 246 85
1924 247 94
1925 264 167
1926 334 159
1927 343 184
1928 420 199
1929 412 253
1930 431 222
1931 431 305
1932 379 384
1933 401 414
1934 315 412
1935 280 507
1936 271 627
1937 230 609
1938 233 668
1939 214 800
1940 219 682
1941 231 782
1942 230 693
1943 174 620
1944 165 667
1945 163 662
1946 284 708
1947 288 1059
1948 312 1301
1949 331 1514
1950 245 1936
1951 304 2032
1952 331 2081
1953 340 2423
1954 353 2500
1955 359 2874
1956 445 3150
1957 457 3255
1958 449 4002
1959 455 4612
1960 482 5553
1961 572 5462
1962 564 6329
1963 608 6535
1964 624 7159
1965 585 8573
1966 598 9486
1967 573 10760
1968 971 11720
1969 1168 12565
1970 1332 14180
1971 1265 16806
1972 1281 19557
1973 1329 21839
1974 1375 25000
1975 1219 26855
1976 1313 31272
1977 1143 34029
1978 1095 38339
1979 1381 41174
1980 1529 45407
1981 1377 48349
1982 1376 52654
1983 1388 59273
1984 1385 64036
1985 1318 67538
1986 1270 70853
1987 1170 77756
1988 1176 82638
1989 1193 90238
1990 1269 94589
1991 1225 100621
1992 1411 105137
1993 1476 108958
1994 1438 113900
1995 1253 126996
1996 1278 138941
1997 1340 155620
1998 1295 174484
1999 1346 190044
2000 1365 213757
2001 1188 230364
2002 1469 247115
2003 1529 278453
2004 1579 303996
2005 1567 331712
2006 1587 368570
2007 1565 389840
2008 1465 418312
2009 1502 453788
2010 1350 471051
2011 1312 507255
2012 1231 540320
2013 1337 564620
2014 1251 572510
2015 1237 576633
2016 1273 557358
2017 1176 560359
2018 1146 465767
2019 1124 497157
2020 1384 680703
2021 59 49322
Publications Cites Dataset

· The total publications of New England Journal of Medicine is 100463.
· The total citations of New England Journal of Medicine is 11644675.