1,720,970 research outputs found
One-year outcomes with a new mitral edge-to-edge repair device: is mitral TEER about to conquer the world?
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Contemporary Approach of Tricuspid Regurgitation: Knowns, Unknowns and Future Challenges.
No full textSevere tricuspid regurgitation (TR) worsens heart failure and is associated with impaired survival. In daily clinical practice, patients are referred late and tricuspid valve (TV) interventions (surgical or transcatheter) are underutilized, which leads to irreversible right ventricular (RV) damage and increases the risk. This article addresses the appropriate timing and modality for an intervention (surgical or transcatheter), and its potential benefits on clinical outcomes. Ongoing randomized controlled trials will provide further insights into the efficacy of transcatheter valve interventions compared to medical treatment
A 10-year observational study on the trends and déterminants of smoking status
No full textIntroduction
La plupart des études concernant la motivation et l'intention d'arrêter de fumer ont été conduites chez les adolescents et jeunes adultes mais les données concernant les sujets d'âge moyen ne sont que rares. L'objectif de cette étude était d'évaluer les tendances et déterminants du statut tabagique dans une cohort populationnelle.
Méthode
Etude observationnelle, prospective avec un premier suivi moyen à 5.6 ans et un second à 10.9 ans. Données récoltées à partir de 3999 participants (49.2% femmes, d'âge 35-75 ans) vivant à Lausanne (Suisse).
Résultats
Les prévalences au baseline des « jamais », anciens ou fumeurs actifs étaient de 41.3, 34.3 et 24.3% respectivement. Durant la période étudiée, plus de 90% des « jamais » et anciens et presque 60% des fumeurs actifs au baseline ont maintenu leur statut tabagique après 10.9 ans. Parmi 973 fumeurs actifs, 216 (22.2%) ont arrêté de fumer durant au moins 5 ans. Les analyses multivariables ont montré que l'augmentation de l'âge est positivement associée avec l'arrêt du tabagisme (p-value pour la tendance <0.001). Parmi 1373 anciens fumeurs, 149 (10.9%) ont rechuté ; l'augmentation de l'âge (p-value pour la tendance<0.001) était négativement associée et l'anamnèse familiale de maladie pulmonaire était positivement associée à la rechute [OR and 95% CI: 1.53 (1.06±2.21)]. Parmi 1653 «jamais» fumeurs, 128 (7.7%) ont commencé à fumer. Le genre masculin [1.46 (1.01±2.12)] et vivre en couple [0.66 (0.45±0.97)] étaient associés à l'initiation du tabagisme.
Conclusion
La plupart des sujets d'âge moyen « jamais » ou anciens fumeurs n'ont pas changé leur statut tabagique avec le temps, alors que 22.2% des fumeurs actifs ont arrêté de fumer durablement. Ces résultats sont encourageants et pourraient être encore améliorés avec des méthodes de soutien appropriées. En comparaison avec à littérature actuelle, cette étude confirme la difficulté à identifier les sujets à risque de changement comportemental négatif
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
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