scholarly journals Retractions in general and internal medicine in a high-profile scientific indexing database

2015 ◽  
Vol 134 (1) ◽  
pp. 74-78 ◽  
Author(s):  
Renan Moritz Varnier Rodrigues de Almeida ◽  
Fernanda Catelani ◽  
Aldo José Fontes-Pereira ◽  
Nárrima de Souza Gave
Keyword(s):  
Internal Medicine ◽  
Relative Risk ◽  
Confidence Interval ◽  
Impact Factor ◽  
Country Of Origin ◽  
Scientific Investigation ◽  
Scientific Impact ◽  
High Profile ◽  
Thomson Reuters ◽  
The Impact

CONTEXT AND OBJECTIVE: Increased frequency of retractions has recently been observed, and retractions are important events that deserve scientific investigation. This study aimed to characterize cases of retraction within general and internal medicine in a high-profile database, with interest in the country of origin of the article and the impact factor (IF) of the journal in which the retraction was made. DESIGN AND SETTING: This study consisted of reviewing retraction notes in the Thomson-Reuters Web of Knowledge (WoK) indexing database, within general and internal medicine. METHODS: The retractions were classified as plagiarism/duplication, error, fraud and authorship problems and then aggregated into two categories: "plagiarism/duplication" and "others." The countries of origin of the articles were dichotomized according to the median of the indicator "citations per paper" (CPP), and the IF was dichotomized according to its median within general and internal medicine, also obtained from the WoK database. These variables were analyzed using contingency tables according to CPP (high versus low), IF (high versus low) and period (1992-2002 versus 2003-2014). The relative risk (RR) and 95% confidence interval (CI) were estimated for plagiarism/duplication. RESULTS: A total of 86 retraction notes were identified, and retraction reasons were found for 80 of them. The probability that plagiarism/duplication was the reason for retraction was more than three times higher for the low CPP group (RR: 3.4; 95% CI: [1.9-6.2]), and similar results were seen for the IF analysis. CONCLUSION: The study identified greater incidence of plagiarism/duplication among retractions from countries with lower scientific impact.

The Eigenfactor™ Score in Highly Specific Medical Fields

2012 ◽  
Vol 91 (4) ◽  
pp. 329-333 ◽  
Author(s):  
A. Sillet ◽  
S. Katsahian ◽  
H. Rangé ◽  
S. Czernichow ◽  
P. Bouchard
Keyword(s):  
Impact Factor ◽  
Web Sites ◽  
Medical Specialty ◽  
Original Research ◽  
Poor Agreement ◽  
Altman Plot ◽  
Scientific Impact ◽  
Thomson Reuters ◽  
The Impact ◽  
Journal Impact

We sought to compare the Eigenfactor Score™ journal rank with the journal Impact Factor over five years, and to identify variables that may influence the ranking differences between the two metrics. Datasets were retrieved from the Thomson Reuters® and Eigenfactor Score™ Web sites. Dentistry was identified as the most specific medical specialty. Variables were retrieved from the selected journals to be included in a regression linear model. Among the 46 dental journals included in the analysis, striking variations in ranks were observed according to the metric used. The Bland-Altman plot showed a poor agreement between the metrics. The multivariate analysis indicates that the number of original research articles, the number of reviews, the self-citations, and the citing time may explain the differences between ranks. The Eigenfactor Score™ seems to better capture the prestige of a journal than the Impact Factor. In medicine, the bibliometric indicators should focus not only on the overall medical field but also on specialized disciplinary fields. Distinct measures are needed to better describe the scientific impact of specialized medical publications.

scholarly journals Quality weighted citations versus total citations in the sciences and social sciences, with an application to finance and accounting

2016 ◽  
Vol 42 (4) ◽  
pp. 324-337 ◽  
Author(s):  
Chia-Lin Chang ◽  
Michael McAleer
Keyword(s):  
Social Sciences ◽  
Impact Factor ◽  
Research Assessment ◽  
Academic Journal ◽  
Additional Measure ◽  
Content Type ◽  
Thomson Reuters ◽  
Number Of Citations ◽  
The Impact ◽  
Article Influence

Purpose – Both journal self-citations and exchanged citations have the effect of increasing a journal’s impact factor, which may be deceptive. The purpose of this paper is to analyse academic journal quality and research impact using quality-weighted citations vs total citations, based on the widely used Thomson Reuters ISI Web of Science citations database (ISI). A new Index of Citations Quality (ICQ) is presented, based on quality-weighted citations. Design/methodology/approach – The new index is used to analyse the leading 500 journals in both the sciences and social sciences, as well as finance and accounting, using quantifiable Research Assessment Measures (RAMs) that are based on alternative transformations of citations. Findings – It is shown that ICQ is a useful additional measure to 2-year impact factor (2YIF) and other well-known RAMs for the purpose of evaluating the impact and quality, as well as ranking, of journals as it contains information that has very low correlations with the information contained in the well-known RAMs for both the sciences and social sciences, and finance and accounting. Practical implications – Journals can, and do, inflate the number of citations through self-citation practices, which may be coercive. Another method for distorting journal impact is through a set of journals agreeing to cite each other, that is, by exchanging citations. This may be less coercive than self-citations, but is nonetheless unprofessional and distortionary. Social implications – The premise underlying the use of citations data is that higher quality journals generally have a higher number of citations. The impact of citations can be distorted in a number of ways, both consciously and unconsciously. Originality/value – Regardless of whether self-citations arise through collusive practices, the increase in citations will affect both 2YIF and 5-year impact factor (5YIF), though not Eigenfactor and Article Influence. This leads to an ICQ, where a higher ICQ would generally be preferred to lower. Unlike 5YIF, which is increased by journal self-citations and exchanged citations, and Eigenfactor and Article Influence, both of which are affected by quality-weighted exchanged citations, ICQ will be less affected by exchanged citations. In the absence of any empirical evidence to the contrary, 5YIF and AI are assumed to be affected similarly by exchanged citations.

scholarly journals Bibliometric analysis of multi-language veterinary journals

2017 ◽  
Vol 29 (3) ◽  
pp. 343-353
Author(s):  
Erwin KRAUSKOPF ◽  
Fernanda GARCIA ◽  
Robert FUNK
Keyword(s):  
Impact Factor ◽  
Bibliometric Analysis ◽  
Web Of Science ◽  
Country Of Origin ◽  
Citation Distribution ◽  
Journal Citation Reports ◽  
The Subject ◽  
Number Of Citations ◽  
The Impact ◽  
Main Language

Abstract The purpose of this study was to investigate the association between language and total number of citations found among documents in journals written in English and other languages. We selected all the journals clustered together in the Journal Citation Reports 2014 under the subject category “Veterinary Sciences” and downloaded all the data registered between 1994-2013 by Web of Science for the journals that stated publishing documents in languages other than English. We classified each of these journals by quartile and extracted information regarding their impact factor, language(s) stated, country of origin, total number of documents published, total number of reviews published, percentage of documents published in English and the quartile in which each journal ranked. Of the 48,118 documents published by the 28 journals analyzed, 55.8% were published in English. Interestingly, although most of the journals state being multi-language, most documents published in quartile 1 journals were in English (an average of 99.2%), while the percentage was 93.1% in quartile 2 journals, 62.1% in quartile 3 journals and 27.4% in quartile 4 journals. We also confirmed that citation distribution in these journals was highly skewed. The results of this study suggest that journals should consider adopting English as the main language as this will increase citation counts and the impact factor of the journal.

Long-term prognostic factors of young patients (≤ 35 years) having acute myocardial infarction: the detrimental role of continuation of smoking

2008 ◽  
Vol 15 (5) ◽  
pp. 567-571 ◽  
Author(s):  
Loukianos S. Rallidis ◽  
John Lekakis ◽  
Demosthenes Panagiotakos ◽  
Katerina Fountoulaki ◽  
Christoforos Komporozos ◽  
...  
Keyword(s):  
Relative Risk ◽  
Confidence Interval ◽  
Ejection Fraction ◽  
Cardiac Events ◽  
Coronary Syndrome ◽  
Myocardial Infraction ◽  
The Impact

Background There are few and conflicting data regarding the prognostic role of continued smoking in very young survivors of acute myocardial infraction (AMI) after the event. Design We conducted a prospective study to evaluate the impact of smoking habits on long-term outcome in individuals who sustained AMI at the age of ≤ 35 years. Methods We recruited 147 consecutive patients who had survived their first AMI at the age of ≤ 35 years. Patients were followed up for up to 10 years. Clinical end points were: readmission for acute coronary syndrome, cardiac death or coronary revascularization because of clinical deterioration. Results The most prevalent risk factor at presentation was smoking (94.8%). Follow-up data were obtained by 135 patients (32 ± 3 yeas old, 115 men). During follow-up 75 (55.6%) patients reported continuation of smoking. Forty-four (32.6%) patients presented cardiac events (three cardiac deaths, 30 acute coronary syndromes, and 11 revascularizations). Multivariate data analysis showed that persistence of smoking (relative risk = 2.35, 95% confidence interval 1.5–5.25, P = 0.03) and ejection fraction at presentation (relative risk = 0.95, 95% confidence interval 0.91–0.98, P= 0.008) were the only significant predictors of cardiac events after adjusting for various confounding factors. In addition, continuation of smoking was the most significant predictor of cardiac events during follow-up in our sample (i.e. had the lowest log-likelihood ratio as compared with ejection fraction or other covariates). Conclusion Persistence of smoking is the most powerful predictor for the recurrence of cardiac events in patients with premature AMI.

scholarly journals Próba analizy bibliometrycznej publikacji 25. Zjazdu Katedr Marketingu, Handlu i Konsumpcji - doświadczenia przeszłości i wyzwania przyszłości

2016 ◽  
Vol 64 (15) ◽  
pp. 170-182
Author(s):  
Jan Wiktor
Keyword(s):  
Impact Factor ◽  
Bibliometric Analysis ◽  
Publication Output ◽  
Country Of Origin ◽  
Bibliometric Data ◽  
Research Results ◽  
Marketing Literature ◽  
Academic Fields ◽  
The Impact ◽  
25Th Congress

The paper endeavours to assess the publications from 25th Congress of Marketing, Commerce and Consumption Departments, which took place in Toruń in 2014, using a bibliometric analysis. It consists of two parts. The first focuses on the essence of bibliometrics, its importance in the academic activity and in communicating research results. The second part presents findings of the author’s own query, and an analysis of publication output of the 2014 congress. Research has utilized the basic bibliometric data (country of origin, the author, language and a form of publication). The analyzed material consisted of 195 papers, in which altogether there were 3164 texts of Polish (49,8%) and foreign (50,2%) authors. The impact factor of previous congresses was very small – 0,6%. This analysis has a preliminary and limited character. It is recommended that an extended and deeper bibliometric research on the marketing literature in Poland should be undertaken, and a marketing impact factor (of marketing literature) on other academic fields and disciplines need to be created. A first step should focus on the formation of a set of marketing, market, commerce and consumption journals which positions and „effectiveness” in terms of bibliometrics is significant. It would be a community’s answer to the „challenges of the future,” which were underlined during the second part of the 25th Congress of Departments in Toruń in 2014.

Outcome after autologous transplantation in the terms of comorbidity for patients with lymphoproliferative diseases: Single center experience.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e19502-e19502
Author(s):  
Aleksandra Pivkova Veljanovska ◽  
Sonja Genco Genadieva-Stavrik ◽  
Zlate Stojanoski ◽  
Lazar Chadievski ◽  
Irina Panovska Stavridis ◽  
...  
Keyword(s):  
Overall Survival ◽  
Relative Risk ◽  
Confidence Interval ◽  
Autologous Transplantation ◽  
High Dose ◽  
Karnofsky Performance Score ◽  
Cell Transplant ◽  
Lymphoproliferative Diseases ◽  
Karnofsky Score ◽  
The Impact

e19502 Background: Autologous stem cell transplantation (ASCT) improves survival in patients with myeloma and lymphoma but is associated with morbidity and nonrelapse mortality (NRM). Hematopoietic cell transplant comorbidity index (HCT-CI) was shown to predict risk of NRM and survival after allogeneic transplantation. We tested the utility of HCT-CI as a predictor of NRM and overall survival (OS) in patients undergoing ASCT. Methods: We analyzed outcomes of 220 patients after high-dose melphalan and high –dose anti lymphoma chemotherapy during year 2000 to 2015. Individual comorbidities were prospectively collected at the time of ASCT. The impact of HCT-CI and other potential prognostic factors, including Karnofsky performance score (KPS), on NRM and survival were studied in multivariate Cox regression models. Results: HCT-CI score was 0, 1, 2, 3, and >3 in 42%, 18%, 13%, 13%, and 14% of the study cohort, respectively. Subjects were stratified into 3 risk groups: HCT-CI score of 0 (42%) versus HCT-CI score of 1 to 2 (32%) versus HCT-CI score > 2 (26%). Higher HCT-CI was associated with lower KPS < 90 (33% of subject’s score of 0 versus 50% in HCT-CI score > 2). HCT-CI score > 2 was associated with melphalan dose reduction (22% versus 10% in score 0 cohorts). One-year NRM was low at 2% (95% confidence interval, 1% to 4%). On multivariate analysis, overall survival was inferior in groups with HCT-CI score of 1 to 2 (relative risk, 1.37, [95% confidence interval, 1.01 to 1.87], P = .04) and HCT-CI score > 2 (relative risk, 1.5 [95% confidence interval, 1.09 to 2.08], P = .01). Factors that affect OS in the autologous recipients among lymphoma and myeloma patients were: HCT-CI, Karnofsky score, number of CD34+ cells/kg and time from diagnosis until transplant (p<0.05). Factors that affect TRM/NRM were HCT-CI, ECOG, Karnofsky score and number of hospital days and body weight.(p<0.05). Conclusions: ASCT for MM and lymphoma is associated with low NRM, and death is predominantly related to disease progression. Comorbidity evaluation during autologous transplantation for lymphoproliferative diseases can be a useful tool in predicting transplant outcome.

The pertussis epidemic: informing strategies for prevention of severe disease

2012 ◽  
Vol 141 (3) ◽  
pp. 463-471 ◽  
Author(s):  
M. F. CLARKE ◽  
K. RASIAH ◽  
J. COPLAND ◽  
M. WATSON ◽  
A. P. KOEHLER ◽  
...  
Keyword(s):  
Risk Factors ◽  
Relative Risk ◽  
Confidence Interval ◽  
Severe Disease ◽  
South Australia ◽  
The Elderly ◽  
Hospitalization Rate ◽  
Factors Associated ◽  
The Impact ◽  
Close Contacts

SUMMARYTo assess the impact of Bordetella pertussis infections in South Australia during an epidemic and determine vulnerable populations, data from notification reports for pertussis cases occurring between July 2008 and December 2009 were reviewed to determine the distribution of disease according to specific risk factors and examine associations with hospitalizations. Although the majority (66%) of the 6230 notifications for pertussis occurred in adults aged >24 years, the highest notification and hospitalization rate occurred in infants aged <1 year. For these infants, factors associated with hospitalization included being aged <2 months [relative risk (RR) 2·3, 95% confidence interval (CI) 1·60–3·32], Indigenous ethnicity (RR 1·7, 95% CI 1·03–2·83) and receiving fewer than two doses of pertussis vaccine (RR 4·1, 95% CI 1·37–12·11). A combination of strategies aimed at improving direct protection for newborns, vaccination for the elderly, and reducing transmission from close contacts of infants are required for prevention of severe pertussis disease.

Favorable Impact of the t(9;11) in Childhood Acute Myeloid Leukemia

2002 ◽  
Vol 20 (9) ◽  
pp. 2302-2309 ◽  
Author(s):  
Jeffrey E. Rubnitz ◽  
Susana C. Raimondi ◽  
Xin Tong ◽  
Deo Kumar Srivastava ◽  
Bassem I. Razzouk ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Relative Risk ◽  
Confidence Interval ◽  
Myeloid Leukemia ◽  
Cox Proportional Hazards Model ◽  
The Other ◽  
Leukemic Cells ◽  
The Impact ◽  
Risk Of Relapse ◽  
Acute Myeloid

PURPOSE: To determine the impact of MLL rearrangements on the outcome of children with acute myeloid leukemia (AML). PATIENTS AND METHODS: We analyzed the clinical and biologic features of 298 infants and children with primary AML treated on four consecutive institutional clinical trials. The Kaplan-Meier method was used in survival analysis and the Cox proportional-hazards model was used to analyze the effect of potential prognostic factors on event-free survival (± 1 SE). RESULTS: Molecular studies of 152 cases detected 42 with MLL rearrangements. The karyotypes of these 42 revealed the t(9;11) (15 cases), abnormalities of chromosomes 10 and 11 (nine cases), the t(11;19) (four cases), other abnormalities of 11q23 (seven cases), and miscellaneous rearrangements (seven cases). Among these 42 patients, the 15 whose leukemic cells carried the t(9;11) had a better outcome (66% ± 15%) than the other 27 (25.9% ± 11.2%; P = .004). Cases with the t(9;11) were also characterized by M5 AML morphology (21 of 23 cases). Of the 63 patients with M5 AML, the 21 whose leukemic cells demonstrated the t(9;11) had a better outcome (71.1% ± 11%) than the other 42 (25.8% ± 7.9%; P = .0004). The only independent factors indicating a favorable prognosis were presenting leukocyte count less than 50 × 109/L (relative risk of relapse, 0.73; 95% confidence interval, 0.55 to 0.97; P = .03) and the t(9;11) (relative risk of relapse, 0.32; 95% confidence interval, 0.16 to 0.64; P = .002). CONCLUSION: We conclude that the t(9;11) is the most favorable genetic factor for patients with AML treated at our institution.

scholarly journals Bibliometric Analysis of Ghana Publications in the Science Citation Index Expanded

2017 ◽  
Vol 66 (1) ◽  
pp. 106 ◽  
Author(s):  
Peter Osei Boamah ◽  
Yuh-Shan Ho
Keyword(s):  
Impact Factor ◽  
Science Citation Index ◽  
Citation Index ◽  
Science Citation ◽  
Thomson Reuters ◽  
The Usa ◽  
The University ◽  
University Of Ghana ◽  
The Impact ◽  
Science Citation Index Expanded

Ghana is a West African country for which apparently there are limited scientometric studies. The objective of this study was to analyze the Ghanaian contribution to knowledge captured in the Thomson Reuters Science Citation Index Expanded (SCI-EXPANDED) database from 1936 - 2016. The following data were analyzed: document type, the language of publication, publication trend, Web of Science Subject Categories, Journals, international collaboration, institutions, authors, and highly cited articles. Indicators such as the total number of articles, first author articles, and corresponding author articles were applied to compare publication performance for collaborative countries and institutions. Also, number of single institute articles: number of nationally collaborative articles: number of internationally collaborative articles (S : N : I) were also used to compare publication characteristics of institutions in Ghana. Results showed that publication trend increased from 1998 to 2015, with researches focusing on health and medicine. PLoS One was the top productive journal, and the most collaborative country for Ghana articles was the USA. Contributions from the University of Ghana were ranked the top one institution for Ghana articles, and higher citation papers were found in international collaborations. In conclusion, the contribution to knowledge of Ghanaian authors is massive in the areas of public, environmental and occupational health and tropical medicine but the impact factor is higher for immunology, infectious diseases, and microbiology articles. Therefore, Ghanaian authors are encouraged to publish more articles in high impact factor journals with Thomson Reuters Scientific indexing in order to have their researches recognized by the existing international databases.

Abstract 4231: Impact of Stress Echocardiography on Patient Outcome: An Effective Gatekeeper for Coronary Angiography

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Siu-Sun Yao ◽  
Sripal Bangalore ◽  
Ajay Shah ◽  
Jorge Silva-Encisco ◽  
Farooq A Chaudhry
Keyword(s):  
Relative Risk ◽  
Coronary Angiography ◽  
Confidence Interval ◽  
Normal Stress ◽  
Stress Echocardiography ◽  
Multivariate Logistic Regression Analysis ◽  
Risk Groups ◽  
Cardiac Events ◽  
Stress Echo ◽  
The Impact

Stress echocardiography is an established technique for the diagnosis, risk stratification and prognosis of patients with known or suspected coronary artery disease. The impact of stress echo in patient selection for coronary angiography is unclear. We assessed 3121 patients (60 ± 13 years, 48% male) undergoing stress echo (41% treadmill, 59% dobutamine). Follow-up (mean 2.8 ± 1.1 years) for subsequent angiography (<<26>2 months), confirmed non-fatal myocardial infarction (n = 76) and cardiac death (n = 83) were identified. Stress echo was abnormal in 34% and normal in 66%. Peak wall motion score index (pWMSI) effectively risk stratified patients into low-normal stress echo (0.8%/year), intermediate (2.6%/year) and high (5.5%/year) risk groups (p < 0.0001). Early coronary angiography was performed in only 128 patients (1.7%) with normal stress echo and increased with worsening stress echo - 226 patients (22.9%) with pWMSI=1.1–1.7 and 191 patients (41.9%) with pWMSI>1.7. Multivariate logistic regression analysis identified pWMSI as the strongest predictor of future angiography (relative risk 2.04, 95% confidence interval 1.67–2.5, p<0.0001) and cardiac events (relative risk 2.45, 95% confidence interval 2.09 –2.88, p<0.0001). Stress echo is an effective gatekeeper for coronary angiography. The overall mortality rate for patients with normal stress echo was 0.8%/year. Only 1.7% of patients with normal stress echo were referred for early angiography.

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