1,721,214 research outputs found
Diagnostic utility of two case definitions for anaphylaxis: a comparison using a retrospective case notes analysis in the UK
No full textBackground: anaphylaxis is a clinical diagnosis with no gold-standard test. Recent case definitions have attempted to provide objective criteria for diagnosis.Objective: the aim of this study was to compare the diagnostic concordance of the Brighton Collaboration case definition (the ‘Brighton’ case definition) to the consensus case definition from the Second Symposium on the Definition and Management of Anaphylaxis (the ‘Symposium’ definition).Method: the study setting was a hospital-based emergency department in the UK. We identified cases of anaphylaxis by physicians’ discharge diagnoses over a 2-year period from 2005 to 2006, and used randomly selected cases of allergic reaction, asthma and urticaria as a control group. Data was extracted by clinicians (who were unaware of the content of either case definition), and the two case definitions were applied by Boolean operators in a Microsoft® Excel spreadsheet. Concordance between the case definitions was measured using Cohen’s kappa (κ) statistic.Results: we reviewed 128 sets of notes, with 47 cases of anaphylaxis. Brighton and Symposium definitions had sensitivities of 0.681 and 0.671, respectively, and specificities of 0.790 and 0.704, respectively. A discordant result was found in 36/128 cases (28.1%; κ = 0.414 [95% CI 0.253, 0.574]), which represents a moderate level of agreement between case definitions.Conclusions: the Brighton case definition has a similar diagnostic concordance to the Symposium case definition. It does not seem to over-or underestimate cases and is sufficiently unique that the identification of an allergic trigger does not have to form part of the case definition. This will be important in the recognition of anaphylaxis resulting from the administration of drug and vaccines, where causality should be examined separately from case ascertainment
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
The Psychological Health of Emergency Medicine Consultants
No full textObjective—To explore the experience of psychological distress and wellbeing in emergency medicine (EM) consultants. Methods— A qualitative, Interpretative Phenomenological Analysis (IPA) study based on interviews with EM consultants working in emergency departments (EDs) across South West England. 18 EM consultants were interviewed, representing a response rate of 54.55% across 5 EDs. The mean (SD) age of participants was 43.17 (5.8) years. All participants worked full-time as EM consultants, with the average years-in-role being 7.64 (5.76). The personal meanings that participants attached to their experiences were inductively analysed and explored alongside their perceived psychological health. Results— The analysis formed three super-ordinate themes: systemic pressures, physical and mental strain, and managing the challenges. Pressures within the ED and healthcare system contributed to participants feeling undervalued and unsatisfied when working in an increasingly uncontrollable environment. Participants described working intensely to meet systemic demands, which inadvertently contributed to a diminishing sense of achievement and self-worth. Consultants perceived their experience of physical and emotional strain as unsustainable, as it negatively impacted: functioning at work, relationships, personal wellbeing and the EM profession. Sustainability was promoted by the presence of social support and through evolving with the consultant role. Conclusions— EM consultants experience considerable physical and mental strain. This strain is dynamically related to consultants' experiences of diminishing self-worth and satisfaction, alongside current socio-political demands on EM services. Recognising the psychological experience and needs of EM consultants through promoting a sustainable EM consultant role could have wide-reaching benefits for the delivery of emergency care and physician wellbeing
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