1,720,967 research outputs found
Cost-effectiveness of introducing cone-beam computed tomography (CBCT) in the management of complex phalangeal fractures: economic simulation
No full textPurpose The purpose of this study was to evaluate the cost-effectiveness of introducing cone-beam computed tomography (CBCT) in the management of the complex finger fractures with articular involvement. Methods We created a decision tree model simulating the diagnostic pathway of complex finger fractures, suggesting the use of CBCT as alternative to multi-slice computed tomography (MSCT), and we compared their clinical outcomes, costs, and cost-effectiveness for a hypothetical cohort of 10,000 patients. Measures of effectiveness are analysed by using qualityadjusted life years, incremental cost-effectiveness ratio, and net monetary benefit. Results Diagnosis of a complex finger fracture performed with CBCT costed 67.33€ per patient, yielded 9.08 quality-adjusted life years, and gained an incremental cost-effectiveness ratio of 29.94€ and a net monetary benefit of 9.07 € at 30,000€ threshold. Using MSCT for diagnosis costed 106.23 €, yielded 8.18 quality-adjusted life years, and gained an incremental cost-effectiveness ratio of 371.15 € and a net monetary benefit of 8.09 €. CBCT strategy dominated the MSCT strategy. The acceptability curve shows that there is 98% probability of CBCT being the optimal strategy at 30,000€ threshold (1 EUR equal to 1.11 USD; updated on 02/02/2020). Conclusion CBCT in complex finger fractures management is cost saving compared with MSCT and may be considered a valuable imaging tool in preoperative assessment, allowing early detection and appropriate treatment. It shortens the time to completion of diagnostic work-up, reduces the number of additional diagnostic procedures, improves quality of life, and may reduce costs in a societal perspective
Pediatric snowboarding severe abdominal trauma: report of our experience
No full textPurpose: The purpose of this study is to report our experience with abdominal trauma treated in high mountain with a well skilled rescue team.Materials and methods: we retrospectively review cases of severe abdominal trauma in snowboarder aged 6-18 years treated between December 2010 and December 2018. This specific high mountain ski area has a well skilled rescue team with doctor. Demographic, type of injury, type of organ trauma, morbidity and outcomes were recorded and evaluated. Results: After reviewing cases, 32 patients were enrolled, 30 were male, 18 (56%) cases had an associated head trauma with concussion and neurocognitive deficits; other 5 cases had head trauma without deficits. One patients had thoracic spine injury associated with complete spine injury. Twenty were injured in a fall, 10 collided with a stationary object and in 2 cases the mechanism of injury was unclear. 19 patients had single organ injury (18 spleen and 1 kidney); 5 patients had spleen and kidney, 6 patients liver and spleen and 2 patients had spleen, liver and pancreatic injury. Two patients underwent splenectomy and nephrectomy while only one patients had splenectomy alone. All the other were treated conservatively without morbidity. Younger patients <15 years were more likely to have multiple organ injuries (p<0.05); all patients were secured and hospitalized by helicopter support. Mean time from injury to hospitalization was under 45 minutes. Conclusion: Young male snowboarders are at risk for having multiple organ injuries; it is essential to hospitalyze these cases as soon as possible. Abdominal trauma especially after collision with stationary object are at risk for severe organ failure
Pediatric snowboarding severe abdominal trauma: report of our experience
No full textPurpose: The purpose of this study is to report our experience with abdominal trauma treated in high mountain with a well skilled rescue team.Materials and methods: we retrospectively review cases of severe abdominal trauma in snowboarder aged 6-18 years treated between December 2010 and December 2018. This specific high mountain ski area has a well skilled rescue team with doctor. Demographic, type of injury, type of organ trauma, morbidity and outcomes were recorded and evaluated. Results: After reviewing cases, 32 patients were enrolled, 30 were male, 18 (56%) cases had an associated head trauma with concussion and neurocognitive deficits; other 5 cases had head trauma without deficits. One patients had thoracic spine injury associated with complete spine injury. Twenty were injured in a fall, 10 collided with a stationary object and in 2 cases the mechanism of injury was unclear. 19 patients had single organ injury (18 spleen and 1 kidney); 5 patients had spleen and kidney, 6 patients liver and spleen and 2 patients had spleen, liver and pancreatic injury. Two patients underwent splenectomy and nephrectomy while only one patients had splenectomy alone. All the other were treated conservatively without morbidity. Younger patients <15 years were more likely to have multiple organ injuries (p<0.05); all patients were secured and hospitalized by helicopter support. Mean time from injury to hospitalization was under 45 minutes. Conclusion: Young male snowboarders are at risk for having multiple organ injuries; it is essential to hospitalyze these cases as soon as possible. Abdominal trauma especially after collision with stationary object are at risk for severe organ failure
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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