Use of the Hirsch-index (h) as measure of an author's visibility in the scientific literature has become popular as an alternative to a gross measure like total citations (c). I show that, at least in astrophysics, h correlates tightly with overall citations. The mean relation is h = 0.5(√ c + 1). Outliers are few and not too far from the mean, especially if 'normalized' ADS citations are used ...

BACKGROUND Disseminating information derived from systematic reviews is a fundamental step for translating evidence into practice. OBJECTIVE To determine which features of dermatological SR are associated with systematic review dissemination, using citation rates as an indicator. METHODS Dermatological systematic reviews published between 2008 and 2012 were obtained from Scopus, the ISI Web...

The h-index by Hirsch[1] has recently earned a lot of popularity in bibliometrics, being echoed in Nature and implemented in the Web of Science bibliometric database. Previous indicators were the total number of papers or the total number of citations. Following the widely accepted idea that not all papers should count equally, the h-index counts only those papers that are significant enough ac...

INTRODUCTION AND OBJECTIVES We aimed to determine the frequency of use and accessibility over time of electronic citations in Revista Española de Cardiología and 3 other Spanish biomedical journals, and to identify the factors that influence the accessibility and retrievability of these links. METHODS A cross-sectional, descriptive study was performed of all the references in articles publish...

Objective To determine the quantity and quality of articles in the field of knee arthroplasty worldwide and elucidate the characteristics of global scientific production. Methods Web of Science was used to identify articles in the field of knee arthroplasty from 2011 to 2015. The total number of papers, number of papers per capita, total number of citations, and mean number of citations were co...

MOTIVATION Duplicate publication impacts the quality of the scientific corpus, has been difficult to detect, and studies this far have been limited in scope and size. Using text similarity searches, we were able to identify signatures of duplicate citations among a body of abstracts. RESULTS A sample of 62,213 Medline citations was examined and a database of manually verified duplicate citati...

BACKGROUND The University of Sofia, Bulgaria, disseminates local biomedical literature (1994 to present) through a free online database, ABS. OBJECTIVES Our objectives were to systematically search ABS, identify citations to controlled trials and discover what proportion of these studies are to be found on medline. METHODS We searched using Bulgarian and English phrases; manually selected c...