Faculty Opinions recommendation of The journal impact factor as a predictor of trial quality and outcomes: cohort study of hepatobiliary randomized clinical trials.

2006 ◽  
Author(s):  
Rob Herbert
Keyword(s):  
Clinical Trials ◽  
Cohort Study ◽  
Impact Factor ◽  
Journal Impact Factor ◽  
Randomized Clinical Trials ◽  
Trial Quality ◽  
Quality And Outcomes ◽  
Journal Impact

scholarly journals APPLICABILITY OF RANDOMIZED TRIALS IN HAND SURGERY: SURVEY STUDY

2018 ◽  
Vol 26 (3) ◽  
pp. 154-157
Author(s):  
VINÍCIUS YNOE DE MORAES ◽  
PRISCILA FRANTZ RUFF ◽  
CARLOS HENRIQUE FERNANDES ◽  
JOÃO BAPTISTA GOMES DOS SANTOS ◽  
JOÃO CARLOS BELLOTI ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Impact Factor ◽  
Journal Impact Factor ◽  
Randomized Clinical Trials ◽  
Statistical Significance ◽  
Hand Surgery ◽  
Survey Study ◽  
P Value ◽  
Surgeon Experience ◽  
Journal Impact

ABSTRACT Objective To assess the applicability of randomized clinical trials and whether certain factors (surgeon experience/journal impact factor) influence their applicability. Methods In this survey study we used the Pubmed/Medline database to select 32 consecutive randomized clinical trials published between 2013 and 2015, involving hand surgery (high/low impact). These studies were independently assessed by 20 hand surgeons (with more or less than 10 years of practice) who answered 4 questions regarding their applicability. Agreement was assessed using Cohen’s kappa and comparison of proportions via chi-square statistics. P-value <5% constituted statistical significance. Results A total of 640 evaluations were produced, generating 2560 responses. A weak correlation was observed between less and more experienced respondents (kappa <0.2; range 0.119–0.179). Applicability between the least and most experienced respondents was similar (p = 0.424 and p = 0.70). Stratification by journal impact factor showed no greater propensity of applicability (p = 0.29) for any of the groups. Conclusions Low agreement was found between the respondents for the applicability of the randomized studies. Surgeon experience and journal impact do not seem to influence this decision. Level of Evidence II, Prospective comparative study.

Is the trend to publish reviews and clinical trials related to the journal impact factor? Analysis in dentistry field

2019 ◽  
Vol 26 (7) ◽  
pp. 427-438
Author(s):  
Ángel Valderrama ◽  
Evaristo Jiménez-Contreras ◽  
Pilar Valderrama ◽  
Manuel Escabias ◽  
Pilar Baca
Keyword(s):  
Clinical Trials ◽  
Factor Analysis ◽  
Impact Factor ◽  
Journal Impact Factor ◽  
Journal Impact

scholarly journals Portuguese Authorship in Published Clinical Trials: Differences in Industry and Investigator Initiated Trials

2021 ◽  
Vol 34 (13) ◽  
Author(s):  
Maria Pinheiro Andrade ◽  
Daniela Matias ◽  
Joana Batuca ◽  
Nélia Gouveia ◽  
Hélder Mota-Filipe ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Clinical Trials ◽  
Impact Factor ◽  
Journal Impact Factor ◽  
Therapeutic Area ◽  
Clinical Trial Registries ◽  
Increasing Trend ◽  
Investigator Initiated Trials ◽  
Different Populations ◽  
Journal Impact

Introduction: The aim of this study was to investigate the Portuguese authorship in publications resulting from trials initiated by the industry or investigators and run in Portugal.Material and Methods: Clinical trials with Portuguese institutions as sponsor or recruiting centers, and registered in four clinical trial registries, in the last 14 years, were assessed. Publications of completed trials, from both the initiative of the industry and investigatorswere screened and compared.Results: The percentage of published trials initiated by industry and investigators was similar (28.0%). However, the percentage of completed investigator-initiated trials (43.6%) was lower when compared to industry trials (69.7%). There was a higher percentage of Portuguese authorship in published investigator-initiated trials when compared with industry-initiated trials (47.1% vs 8.5%, respectively). Moreover, industry-initiated trials with Portuguese authors were published in journals with lower journal impact factor when compared with those published without authorship of Portuguese investigators. Oncology was the therapeutic area with the highest number of clinical trial registrations and publications. However, in publications with Portuguese authors, industry Initiated trials mainly focused on neurology while investigator-initiated trials had a higher number of papers in the fields of gastroenterology and infection diseases. Published trials with Portuguese authorship, initiated by the industry or investigators, also targeted different populations and had different purposes. In both cases, no significant differences were observed in terms of the journal impact factor or in the alignment of the published randomized trials with the respective reporting guidelines.Discussion: When compared with previous publications, this study showed an increasing trend in the number of clinical trials in Portugal, published within similar timeframes, after trial conclusion. Even though both industry and investigator trials are published within the standards for reporting trials, the low number of Portuguese authorships in industry publications might underline the need for invigorating these independent clinical trials in Portugal by capacitating and empowering national clinical research teams.Conclusion: This study confirmed that even though all registered trials had the involvement of Portuguese institutions as a recruiting center, not all the published trials had Portuguese investigators as authors, mainly those initiated by the industry.

Analysis of the journal impact factor and related bibliometric indicators in education and educational research category

2021 ◽  
pp. 1-22
Author(s):  
Metin Orbay ◽  
Orhan Karamustafaoğlu ◽  
Ruben Miranda
Keyword(s):  
Impact Factor ◽  
Educational Research ◽  
Journal Impact Factor ◽  
Impact Factors ◽  
Bibliometric Indicators ◽  
Strongly Correlated ◽  
Starting Point ◽  
Consistent Assessment ◽  
The Impact ◽  
Journal Impact

This study analyzes the journal impact factor and related bibliometric indicators in Education and Educational Research (E&ER) category, highlighting the main differences among journal quartiles, using Web of Science (Social Sciences Citation Index, SSCI) as the data source. High impact journals (Q1) publish only slightly more papers than expected, which is different to other areas. The papers published in Q1 journal have greater average citations and lower uncitedness rates compared to other quartiles, although the differences among quartiles are lower than in other areas. The impact factor is only weakly negative correlated (r=-0.184) with the journal self-citation but strongly correlated with the citedness of the median journal paper (r= 0.864). Although this strong correlation exists, the impact factor is still far to be the perfect indicator for expected citations of a paper due to the high skewness of the citations distribution. This skewness was moderately correlated with the citations received by the most cited paper of the journal (r= 0.649) and the number of papers published by the journal (r= 0.484), but no important differences by journal quartiles were observed. In the period 2013–2018, the average journal impact factor in the E&ER has increased largely from 0.908 to 1.638, which is justified by the field growth but also by the increase in international collaboration and the share of papers published in open access. Despite their inherent limitations, the use of impact factors and related indicators is a starting point for introducing the use of bibliometric tools for objective and consistent assessment of researcher.

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