1,720,997 research outputs found
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
Analysis of drug utilization and health care resource consumption in patients with psoriasis and psoriatic arthritis before and after treatment with biological therapies
Full text linkTo describe the therapeutic pathways of patients with psoriasis (PSO) and psoriatic arthritis (PsA) before and after treatment with biological therapies in a real-world setting and to determine the relative consumption of health care resources
[The therapeutic management and economic burden of patients with chronic kidney disease non-dialysis-dependent with anemia and ESA treated: findings from a real-world study in Italy]
No full textBackground. L’obiettivo dell’analisi real-world è stato valutare le caratteristiche dei pazienti con insufficienza renale cronica non dipendente da dialisi (IRC-NDD) con anemia e trattati con agenti stimolanti l’eritropoiesi (ESA), analizzarne la farmaco-utilizzazione e il carico economico in pratica clinica italiana. Metodi. È stata eseguita un’analisi retrospettiva basata su database amministrativi e di laboratorio riguardanti circa 1,5 milioni di assistibili. Sono stati identificati pazienti adulti con record identificanti l’IRC-NDD stadio 3a-5 e anemia nel periodo 2014-2016. Sono stati inclusi i pazienti eleggibili agli ESA (presenza di ≥ 2 valori di Hb < 11 g/dL in 6 mesi) attualmente trattati. Risultati. Dei 101.143 pazienti IRC-NDD identificati, 40.020 presentavano anemia. Complessivamente, 25.360 pazienti anemici erano eleggibili al trattamento con ESA e 3.238 (12,8%) attualmente in trattamento sono stati inclusi. L’età media era di 76,9 anni, il 51,1% era di sesso maschile. Le comorbilità più frequentemente riscontrate riguardavano l’ipertensione (> 90% in ogni stadio), il diabete (37,8- 43,2%) e le patologie cardiovascolari (20,5-28,9%). L’aderenza agli ESA è stata osservata nel 47,9% dei pazienti, con una tendenza decrescente dal 65,8% (stadio 3a) al 35% (stadio 5). Una quota consistente di pazienti non presentava visite nefrologiche durante i 2 anni di follow-up. La voce di costo maggiormente impattante era quella relativa ai farmaci (€4.391), seguita dai ricoveri per tutte le cause (€3.591) e dagli esami di laboratorio (€1.460). Conclusioni. I risultati hanno evidenziato un’aderenza non ottimale agli ESA, con un trend di sotto utilizzo di queste terapie nella gestione dell’anemia nell’IRC-NDD. Inoltre, l’analisi ha mostrato un elevato carico economico per i pazienti anemici IRC-NDD.Background. This real-world study aimed to provide insights on the characteristics, drug utilization, and economic burden of chronic kidney disease non-dialysis-dependent (NDD-CKD) patients with anemia prescribed Erythropoiesis Stimulating Agents (ESA) in Italian clinical practice settings. Methods. A retrospective analysis was performed based on administrative and laboratory databases covering around 1.5 million subjects across Italy. Adult patients with a record for NDD-CKD stage 3a-5 and anemia during 2014-2016 were identified. Eligibility to ESA was defined as the presence of ≥ 2 records of Hb < 11 g/dL over 6 months, and patients eligible and currently treated with ESA were included. Results. Overall, 101,143 NDD-CKD patients were screened for inclusion, of which 40,020 were anemic. A total of 25,360 anemic patients were eligible to ESA treatment and 3,238 (12.8%) were prescribed ESA and included. The mean age was 76.9 years and 51.1% was male. More frequently observed comorbidities were hypertension (over 90% in each stage), followed by diabetes (37.8-43.2%) and cardiovascular condition (20.5-28.9%). Adherence to ESA was observed in 47.9% of patients, with a downward trend while progressing across stages (from 65.8% stage 3a to 35% stage 5). A consistent proportion of patients did not have nephrology visits during the 2 years of follow-up. Costs were mainly due to all drugs (€4,391) followed by all-cause hospitalization (€3,591) and laboratory tests (€1,460). Conclusions. Findings from the study highlight an under-use of ESA in the management of anemia in NDD-CKD as well as a sub-optimal adherence to ESA and showed a great economic burden for anemic NDD-CKD patients
Prescribing pattern and resource utilization of monoamine oxidase-B inhibitors in Parkinson treatment: comparison between rasagiline and selegiline
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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
Raggiungimento del target terapeutico nei soggetti avviati al trattamento con statine in pratica clinica. Risultati dallo studio STAR (Statins Target Assessment in Real practice)
No full textThe primary aim of the STAR Study (Statins Target Assessment in Real practice) was to determine the LDL-cholesterol reduction and to analyse patient's and therapeutic factors associated to LDL-cholesterol target attainment in newly treated subjects with statins in an unselected population in clinical practice setting. Administrative databases (including pharmaceutical prescriptions and hospital admissions) and laboratory test databases (including LDL-cholesterol values) of five local health units, distributed in Emilia Romagna, Toscana and Umbria, were linked. A retrospective cohort study was conducted and all subjects aged > or =18 years with a first prescription for statins (newly treated subjects) between January 1st, 2007 and June 30th, 2008 were included. All statin prescriptions over a 12 months follow-up period were considered and used to calculate adherence to treatment. Baseline and follow-up LDL-cholesterol, respectively, were defined according to the nearest determination to the first prescription for statins and to the end of the follow-up period. A total of 3.232 subjects was included, 1.516 males (47%) and 1.716 females (53%), with an average age equal to 65.9 +/- 11.3 years. Among included subjects, 22.,6% had a gap to LDL-cholesterol target or =50%, 30-49%, and 10-29%, respectively, LDL-cholesterol target was attained by 7.1%, 41.8%, and 62.% of subjects. LDL-cholesterol target attainment was associated to gap to target, adherence with treatment, and type of statin
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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