Self-Citation Rate and Impact Factor in Ophthalmology

2014 ◽  
Vol 52 (3) ◽  
pp. 136-140 ◽  
Author(s):  
Michael Mimouni ◽  
Ori Segal
Keyword(s):  
2019 ◽  
Vol 40 (10) ◽  
pp. 1136-1142 ◽  
Author(s):  
Malke Asaad ◽  
Austin Paul Kallarackal ◽  
Jesse Meaike ◽  
Aashish Rajesh ◽  
Rafael U de Azevedo ◽  
...  

Abstract Background Citation skew refers to the unequal distribution of citations to articles published in a particular journal. Objectives We aimed to assess whether citation skew exists within plastic surgery journals and to determine whether the journal impact factor (JIF) is an accurate indicator of the citation rates of individual articles. Methods We used Journal Citation Reports to identify all journals within the field of plastic and reconstructive surgery. The number of citations in 2018 for all individual articles published in 2016 and 2017 was abstracted. Results Thirty-three plastic surgery journals were identified, publishing 9823 articles. The citation distribution showed right skew, with the majority of articles having either 0 or 1 citation (40% and 25%, respectively). A total of 3374 (34%) articles achieved citation rates similar to or higher than their journal’s IF, whereas 66% of articles failed to achieve a citation rate equal to the JIF. Review articles achieved higher citation rates (median, 2) than original articles (median, 1) (P < 0.0001). Overall, 50% of articles contributed to 93.7% of citations and 12.6% of articles contributed to 50% of citations. A weak positive correlation was found between the number of citations and the JIF (r = 0.327, P < 0.0001). Conclusions Citation skew exists within plastic surgery journals as in other fields of biomedical science. Most articles did not achieve citation rates equal to the JIF with a small percentage of articles having a disproportionate influence on citations and the JIF. Therefore, the JIF should not be used to assess the quality and impact of individual scientific work.


2021 ◽  
Vol 10 ◽  
pp. 2156
Author(s):  
Sheida Jamalnia ◽  
Nasrin Shokrpour

Background: Author and journal self-citation contributes to the overall citation count of an article and the impact factor of the journal in which it appears. Little is known, however, about the extent of self-citation in the general clinical medicine literature. The objective of this study was to determine the effect of self-citation (Journal and Author) on the impact factor of Iranian, American, and European English medical journals. Methods: IF (Impact Factor), IF without self-citations (corrected IF), journal self-citation rate, and author self-citation rate for medical journals were investigated from 2014–2021, by reviewing the Journal Citation Report. Twenty Iranian English medical journals in WoS indexed were selected and compared with twenty American and twenty European English medical journals. The correlation between the journal self-citation and author self-citation with IF was obtained. We used Spearman’s correlation coefficient for correlation of self-citation and IF. A P. value of0.05 was considered as significant in all the tests. Results: The overall journal citations were higher in the American and European journals compared to the Iranian ones between 2014 and 2021. There was a significant relationship between journal self-citation rates and impact factor (P


2005 ◽  
Vol 33 (5) ◽  
pp. 567-570 ◽  
Author(s):  
C. R. Bain ◽  
P. S. Myles

Evidence-based medicine uses a hierarchy of publication types according to their vulnerability to bias. A widely used measure of journal “quality” is its impact factor, which describes the citation rate of its publications. We investigated the relationship between impact factor for eight anaesthesia journals and publication type with respect to their level of evidence 1-4 using Spearman rank correlation (rho). There were 1418 original publications during 2001 included in the analysis. The number (%) of publication types according to evidence-based medicine level were: level 1: 6 (0.4%), level 2: 533 (38%) level 3: 329 (23%), level 4: 550 (39%). There was no correlation between journal ranking according to impact factor and publication type (rho=–0.03, P=0.25). The correlation between journal rank and the proportion of publications that were randomized trials was –0.35 (P<0.001). The correlation between journal rank and number of publications was 0.65 (P<0.001). The correlation between journal rank and number of level 1 or 2 studies was 0.58 (P<0.001). The overall level of evidence published in anaesthesia journals was high. Journal rank according to impact factor is related to the number of publications, but not the proportion of publications that are evidence-based medicine level 1 or 2.


2020 ◽  
Vol 39 (6) ◽  
pp. 745-746
Author(s):  
Thomas Clavier ◽  
Emmanuel Besnier ◽  
Alice Blet ◽  
Matthieu Boisson ◽  
Stéphanie Sigaut ◽  
...  

2014 ◽  
Vol 9 (3) ◽  
pp. 86
Author(s):  
Elizabeth Margaret Stovold

A Review of: Peterson, G.M. (2013). Characteristics of retracted open access biomedical literature: a bibliographic analysis. Journal of the American Society for Information Science and Technology. 64(12), 2428-2436. doi: 10.1002/asi.22944 Abstract Objective – To investigate whether the rate of retracted articles and citation rates post-retraction in the biomedical literature are comparable across open access, free-to-access, or pay-to-access journals. Design – Citation analysis. Setting – Biomedical literature. Subjects – 160 retracted papers published between 1st January 2001 and 31st December 2010. Methods – For the retracted papers, 100 records were retrieved from the PubMed database and 100 records from the PubMed Central (PMC) open access subset. Records were selected at random, based on the PubMed identifier. Each article was assigned a number based on its accessibility using the specific criteria. Articles published in the PMC open access subset were assigned a 2; articles retrieved from PubMed that were freely accessible, but did not meet the criteria for open access were assigned a 1; and articles retrieved through PubMed which were pay-to-access were assigned a 0. This allowed articles to be grouped and compared by accessibility. Citation information was collected primarily from the Science Citation Index. Articles for which no citation information was available, and those with a lifetime citation of 0 (or 1 where the citation came from the retraction statement) were excluded, leaving 160 articles for analysis. Information on the impact factor of the journals was retrieved and the analysis was performed twice; first with the entire set, and second after excluding articles published in journals with an impact factor of 10 or above (14% of the total). The average number of citations per month was used to compare citation rates, and the percentage change in citation rate pre- and post-retraction was calculated. Information was also collected on the time between the date the original article was published and the date of retraction, and the availability of information on the reason for the retraction. Main results – The overall rate of retracted articles in the PMC open access subset compared with the wider PubMed dataset was similar (0.049% and 0.028% respectively). In the group with an accessibility rating of 0, the change in citation rate pre- and post-retraction was -41%. For the group with an accessibility rating of 1, the change was -47% and in those with a rating of 2, the change in citation rate was -59%. Removing articles published in high impact factor journals did not change the results significantly. Retractions were issued more slowly for free access papers compared with open or fee-based articles. The bibliographic records for open access articles disclosed details of the reason for the retraction more frequently than free, non-open papers (91% compared to 53%). Conclusion – Open access literature is similar in its rate of retraction and the reduction in post-retraction citations to the rest of the biomedical literature, and is actually more reliable at reporting the reason for the retraction.


2010 ◽  
Vol 9 (2) ◽  
pp. 553-567 ◽  
Author(s):  
José Navarrete-Cortés ◽  
Juan Antonio Fernández-López ◽  
Alfonso López-Baena ◽  
Raúl Quevedo-Blasco ◽  
Gualberto Buela-Casal

In this study, we carried a classification by country based on the analysis of the scientific production of psychology journals. We analyzed a total of 108,741 documents, published in the Web of Science. The indicators used were the Weighted Impact Factor, the Relative Impact Factor, the Citation Rate per article and the articles published in the top five journals of the Journal Citation Report (JCR). The results indicate that Spain has the highest percentage of articles in the top five journals in the JCR and Colombia is the second latin-american, Spanish-speaking country that has more citations per article. Countries like Hungary, Italy and USA, had a higher Impact Factor and Citation Rate.


2015 ◽  
Vol 156 (46) ◽  
pp. 1871-1874
Author(s):  
András Schubert

Case studies and case reports form an important and ever growing part of scientific and scholarly literature. The paper deals with the share and citation rate of these publication types on different fields of research. In general, evidence seems to support the opinion that an excessive number of such publications may negatively influence the impact factor of the journal. In the literature of scientometrics, case studies (at least the presence of the term “case study” in the titles of the papers) have a moderate share, but their citation rate is practically equal to that of other publication types. Orv. Hetil., 2015, 156(46), 1871–1874.


2014 ◽  
Author(s):  
Amanda R Liczner

Restoration ecology is a rapidly growing field of research. The statistical analyses and experimental designs used in this field have likely also expanded. In this review, the statistical scope of the restoration ecology of invaded grasslands will be investigated. A systematic review was conducted on 103 articles to examine the types of statistical tests used and how they changed over time, if assumptions are tested, and how the number of statistical tests and the experimental design influence both the citation rate of articles and the impact factor of journals where these articles are published. ANOVAs have consistently been the dominant test. Statistical test diversity has increased since the year 2000. Most articles did test the assumptions of statistical analyses. The number of tests, and sample size of experiments are both positively correlated with the average citation rate of articles and the impact factor of the journal while the number of factors was negatively correlated. GLMs are recommended as a statistical test to be used more frequently in the future over ANOVAs. There is room for improvement in terms of reporting statistics accurately, including testing assumptions. When possible, sample sizes should be increased to both increase the quality of data, and the citation rate and the journal impact where articles are published. When possible and appropriate, sample sizes and the number of statistical tests should be increased. Adding factors in experimental designs should only be done so without compromising sample size as it has been shown to hinder the citation rate and journal impact.


2019 ◽  
Vol 7 (4) ◽  
pp. 103 ◽  
Author(s):  
Romeo Patini ◽  
Edoardo Staderini ◽  
Andrea Camodeca ◽  
Federica Guglielmi ◽  
Patrizia Gallenzi

Background: The effects of publishing case reports on journal impact factor and their impact on future research in pediatric dentistry has not been clearly evaluated yet. Aim. To assess the relevance and role of case reports in pediatric dentistry. Methods: A systematic review (PROSPERO registration number: CRD42018108621) of all case reports published between 2011 and 2012 in the three major pediatric dentistry journals was performed manually. Data regarding citations of each report were acquired from the Institute for Scientific Information database available online. The authors analyzed information regarding citations (number, percentage, and mean) received by each case report and considered their relation with the 2013 journal impact factor. Results: Case reports accounted for almost sixteen per cent of all articles published between 2011 and 2012. The citation rate of case reports was generally low and the highest mean citation was 0.5. This review revealed that 6 (9.52%) case reports had at least 5 citations and that the majority of the citing articles were also case reports (27.78%) or narrative reviews (25%). Conclusions: The publication of case reports affected the journal impact factor in a negative way, this influence is closely related to the percentage of the published case reports. Case reports about innovative topics, describing rare diseases, syndromes, and pathologies were more frequently cited.


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