1,720,968 research outputs found
The pharmacoeconomic impact of amlodipine use on coronary artery disease
No full textThe most frequent cause of mortality and morbidity in industrialized countries is coronary artery disease (CAD), which in Europe alone is responsible for around two million deaths per year. In 2001 it accounted for about 260,000 hospital discharges in Italy. The costs of CAD treatment in Italy-which were borne by the Italian state, the third-party payer-amounted to €800 million. We propose to assess the pharmacoeconomic implications of using amlodipine besylate treatment in Italy for patients with coronary artery disease. The study is based on a post-hoc cost-effectiveness analysis that compared standard care supplemented by amlodipine besylate with ordinary standard care over a 36-month time horizon. The clinical outcome data were based on the prospective randomized evaluation of vascular effect of norvasc trial (PREVENT). Direct medical costs referred to the purchase costs of amlodipine besylate and the cost of National Health Service (NHS) hospitalization. The costs were discounted back at an annual rate of 5%. Patients administered amlodipine besylate exhibited a significant risk reduction with respect to any major vascular event or procedure when compared to the placebo group. The reduction mainly referred to unstable angina events and revascularization procedures. We estimated that the total cost of adding amlodipine besylate to standard care amounted to €139,050 per 1000 patients treated for 36 months. This represents a cost of €1780 per patient remaining free of any vascular event. Results were sensitive to both clinical and economic variables. The incremental costs of the alternative therapy ranged from €296 to 5066 per patient free of any event in, respectively, the best and worst scenario. Amlodipine besylate therapy can be a cost-effective strategy for CAD treatment in Italy. Our economic evaluation demonstrated, first, that by reducing vascular events and the need for revascularization procedures savings were achieved in hospital expenditure, and, second, that such savings could significantly offset drug costs
Pharmacoeconomic consequences of amlodipine besylate therapy in patients undergoing PTCA
No full textIn Italy, revascularization interventions increased from 44,600 in 1996 to more than 100,000 in 2001. In particular, the occurrence of percutaneous transluminal coronary angioplasty (PTCA) increased from 239 cases per million population in 1994 to about 1300 cases per million population in 2001. This trend has caused a concomitant increase in revascularization costs, which have doubled in few years, rising from €421 millions in 1996 to €850 millions in 2001. In 2001, PTCA amounted to 55% of total cost of revascularizations. The aim of this study was to assess the pharmacoeconomic consequences of amlodipine besylate therapy administered in patients at high risk of restenosis after PTCA. We conducted a cost-effectiveness analysis comparing therapy with amlodipine besylate added to standard care versus standard care alone. Information on clinical outcomes was drawn from the Coronary Angioplasty Amlodipine Restenosis Study (CAPARES). Medical costs were estimated with reference to drug therapy and hospitalizations for coronary events and revascularization procedures. The study was conducted from the perspective of the Italian third party payer (National Health Service). The analysis was applied to a time horizon of 4 months. Amlodipine besylate resulted less expensive and more effective than standard care. It reduced mortality, morbidity for coronary reasons and the need of revascularization procedures. The cost per 1000 patients was estimated at €1,166,000 in the placebo and €950,000 in the amlodipine besylate group, resulting into a cost saving of €216,000, that is 18.5% of total cost of standard care. Results are sensitive to the cost of amlodipine besylate and the cost of hospitalizations, but therapy with amlodipine besylate resulted dominant even in the most unfavorable hypothesis
sj-docx-1-dst-10.1177_19322968231161320 – Supplemental material for Advanced Hybrid Closed Loop in Adult Population With Type 1 Diabetes: A Substudy From the ADAPT Randomized Controlled Trial in Users of Real-Time Continuous Glucose Monitoring
No full textSupplemental material, sj-docx-1-dst-10.1177_19322968231161320 for Advanced Hybrid Closed Loop in Adult Population With Type 1 Diabetes: A Substudy From the ADAPT Randomized Controlled Trial in Users of Real-Time Continuous Glucose Monitoring by Tim van den Heuvel, Ralf Kolassa, Winfried Keuthage, Jens Kroeger, Roseline Ré, Simona de Portu, Linda Vorrink, John Shin, Javier Castañeda, Robert Vigersky and Ohad Cohen in Journal of Diabetes Science and Technology</p
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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