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An impact factor is a number assigned to a journal that measures the relative importance of a journal within its particular field. The higher the number, generally the more important that journal is to the scientific community. Publishing in a journal with a higher impact factor raises your personal impact or your citability
Note that 2011 impact factors are actually published in 2012; they cannot be calculated until all of the 2011 publications have been processed by the indexing agency.Knowing the formula, how do you think a journal could raise their impact? Publishinga low number of articles that will be cited frequently will raise the IF.Not surprising that publishers of scientific journals areeager to use favorable impact factors for the promotion of their products. This has led a well knownjournals to an attempt manipulation of the process (Leukemia and SHOCK)Editors can require that the journal presently requests that several references to itself are incorporated in thereference list. Called self-cites.Editors can requestupon publication of the article the author is requested to send copies to colleagues and urge them tocite it.Journals may publish a larger percentage of review articles which are generally cited more than research reports.Journals may publish a large fraction of papers that they expect to be highly cited early in the calendar year to give them more time to gather citations.
Journal Citation Reports database is the only indexing agencyThere are other scales to measure impact, but Impact Factor numbers from JCR are the standard.Ifit isn’t in JCR, it isn’t indexed and does not have an IF.Might not have an IF if it’s too new or not publishing with enough impact in the field:New journals, which are indexed from their first published issue, will receive an impact factor after two years of indexingAnnuals and other irregular publications sometimes publish no items in a particular year, affecting the count.
Why is CA so high? They publish the national cancer statistics each year, and you have to cite those if you are researching. Cited all the time. Not cutting edge, but important.
Notice Journal Self Cites – one reason a journal could rank so high
6 plus is the most frequent cutoff for evaluations, etc. Sort of a standard at MD Anderson.The other most commonly requested cutoffs are 5 plus and 10 plus.What is a reasonable Impact Factor?Thereis a difference between faculty and residents/fellows. If you aren’t faculty, you are competing with them for publishing. Don’t be discouraged if not accepted.If you aren’t faculty, you don’t have to shoot for 6+…a 2 is still good.
Total citations ever of the journals.Why do some of the most cited journals have low impact factors? High numbers of published itemsNotice the fields that these journal are in…if you are a behavioral science faculty member, you may not find many journals with high impact factors because more is being published and cited in physics, chemistry, etc.
10 years of statsJournal of the AmericanMedical Association IF = 30.026New England Journal of Medicine IF = 53.298Nature IF = 36.280Science IF = 31.201
How do I choose a journal?Doyour literature search, compiled a mass of articles. Pick the articles that best match your search criteria and we’ll find in them in WOS. In WOS, we can look at who’s been citing that article and start compiling a list of journals. Look at the “About this journal” section of the journal website. Make sure your manuscript matches the scope of the journal.*SciVal Experts. You can find out where Anderson people are publishing.
There is no easy way to identify where a whole department is publishing. SciVal Experts is probably the best place to direct MDA people to. Users can look at some various views of department level information.WEBINAR: Wed, August 8, 11:30am – 12:00pmResearch Profiles - Track Your Publications & Find CollaboratorsThis webinar will show you how to create a research profile using ResearcherID and Google Citations. Research profiles help you track your publications, citation count, and h-index. They can also be a great source to connect you to future potential collaborators. SciVal Experts, a curated database of MD Anderson faculty research profiles, will also be demonstrated.
Before Youresearch Publish:medical Finding Impact Factors and Choosing a JournallibraryLaurissa Gann &April Aultman BeckerResearch Medical LibraryUniversity of Texas M.D.Anderson Cancer Center
Impact FactorsAverage frequency with which articles from ajournal are used as citations in major journalsduring the previous two years Why Calculate Impact Factors? • Evaluate the scholarly worth (impact) of a journal • Rank journals within a discipline • Evaluation for promotions, tenure, or grants • Compare contributions of one discipline with another • Help you decide where to publish your article for maximum impact research medical library
How is an Impact Factor calculated? A = the number of times articles published in 2009 and 2010 were cited A ÷B= by a journal during 2011. Impact Factor B = the total number of "citable items" published by that journal in 2009 and 2010. "Citable items" are usually articles, reviews, proceedings; not news articles, editorials, etc. Note that 2011 impact factors are actually published in 2012. research medical library
What is a high Impact Factor?2011 impact factors: 2011 Number % Remaining• 8281 journals with impact factors Impact Factor of Journals Rank Journals• 151 journals IF ≥ 10, top 1.8% 30 20 0.2 8261 25 31 0.37 8250• 372 journals IF ≥ 6, top 4.5% 20 46 0.6 8235 15 65 0.8 8216• 2707 journals IF ≥ 2, still in top 1/3 journals 12 110 1.3 8171 10 151 1.8 8130 with impact factors 9 192 2.3 8089 8 220 2.7 8061 7 274 3.3 8007 6 372 4.5 7909 5 532 6.4 7582 4 837 10.1 7749 3 1458 17.6 6823 2 2707 32.7 5574 1 4935 59.6 3346 research medical library
What are the most cited journals out there?Journal Total Cites 2011 Impact FactorNature 526,505 36.280Proceedings of the National Academy of Sciences in the USA 504,243 9.681Science 480,839 31.201Journal of the American Chemical Society 408,307 9.907Journal of Biological Chemistry 402,449 4.773Physical Review Letters 335,444 7.370Physical Review B 278,680 3.691New England Journal of Medicine 232,068 53.298Angewandte Chemie-International Edition 209,862 13.455Applied Physics Letters 203,336 3.844 research medical library
How often does MD Anderson publish inthese top journals? 2000-2011 Articles Editorials Reviews 2011 Impact Factor JAMA 14 5 1 30.026 NEJM 31 17 4 53.298 Nature 18 5 0 36.280 Science 8 6 1 31.201 Total 71 33 6 Faculty average 9.2 publications per year: • 6 articles • 2.75 editorials • 0.5 reviews research medical library
How do I choose a journal? • Journal Citation Report • Literature search • Find similar articles • See who is citing the articles • “About this Journal” research medical library
Where are others publishing? WEBINAR: Wed, August 811:30am – 12:00pmResearch Profiles: Track YourPublications & Find Collaborators
Contact the Research Medical Library In Person: Pickens Tower, Floor 21 or SCRB4, Floor 1 Phone: 713-792-2282 Email: RML-Help@mdanderson.orgresearch Chat: click on “Ask Us” at http://libanswers.mdanderson.orgmedicallibrary
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