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Determinants of methadone treatment assignment among heroin addicts on first admission to public treatment centres in Italy
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
VEdeTTE, a Longitudinal Study on Effectiveness of Treatments for Heroin Addiction in Italy: Study Protocol and Characteristics of Study Population
No full textMortalità in una coorte di tossicodipendenti da eroina arruolati presso i Ser.T in Italia, 1998-2001
No full textObiettivo: descrizione della mortalità totale e causa specifica in una coorte di tossicodipendenti da eroina e stima dell’impatto della dipendenza da eroina sulla mortalità della popolazione generale.
Setting e popolazione: una coorte di 10.376 tossicodipendenti da eroina (8.881 maschi e 1.495 femmine) arruolati nei servizi per le tossicodipendenze italiani (Ser.T) in un periodo di tempo di 18 mesi, compreso tra il settembre 1998 e il settembre 2000, e seguiti fino al 31 marzo 2001.
Risultati: nel periodo d’osservazione si sono verificati 190 decessi, 153 fra i maschi e 37 fra le femmine: 70 per overdose (36,8%), 30 per cause violente (15,8%) e 38 per AIDS (20,0%). Il tasso di mortalità standardizzato per età per 1.000 anni-persona è pari a 12,0 (IC 95% 5,4-18,6): 12,7/1.000 anni-persona (IC 95% 4,9-20,5) tra i maschi e 8,4/1.000 anni-persona (IC 95% 4,7-12,2) tra le femmine. Coerentemente con quanto osservato in altri studi recenti, la principale causa di morte è l’overdose (tasso di mortalità 2,6/1.000 a-p e IC 95% 0,8-4,5 fra gli uomini; tasso di mortalità 4,0/1.000 a-p e IC 95% 0,9-7,2 fra le donne) seguita dall’AIDS (tasso di mortalità 1,8/1.000 a-p e IC 95% 0,4-31 fra gli uomini; tasso di mortalità 2,6/1.000 a-p e IC 95% 0,6-4,6 fra le donne). Il tasso di mortalità per tutte le altre cause (escluse overdose e AIDS) è di 6,7/1.000 a-p (IC 95% 0,0-14,0) nei maschi e 2,3/1.000 a-p (IC 95% 0,9-3,6) nelle femmine. I rapporti standardizzati di mortalità per tutte le cause mostrano un eccesso rispetto alla popolazione generale, in particolare per le femmine (SMR 22,8; IC 95% 16,5-31,5) ma anche tra i maschi (SMR 6,7; IC 95% 5,7-7,8). La frazione attribuibile di mortalità strato specifica (tabella 4) mostra che il 14,4% (IC 95% 10,9-18,5) dei decessi osservati in Italia nella fascia d’età 30-34 anni nell’anno 2000 possono essere riconducibili all’uso d’eroina; tale frazione è inferiore nelle fasce 25-29 (10,7%; IC 95% 6,9-15,6%) e 35-39 anni (12,8%; IC 95% 9,9-16,2%).
Conclusioni: la mortalità di questa coorte è minore rispetto a quella stimata in studi precedenti, in particolare per la riduzione della mortalità per AIDS e overdose. Persiste comunque l’eccesso di mortalità rispetto alla popolazione generale dello stesso genere ed età. Caratteristiche importanti della popolazione studiata sono l’elevata età all’arruolamento (media 31,1 DS 6,2) e il tempo d’osservazione trascorso prevalentemente in trattamento. La frazione attribuibile di mortalità, tenendo conto delle assunzioni relative alla stima della prevalenza in popolazione generale, mostra che il 13% della mortalità nelle fasce d’età intorno ai trent’anni può essere ricondotta alla tossicodipendenza
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Gender differences in heroin addiction and treatment: results from the VEdeTTE cohort
No full textBackground: Gender differences strongly affect heroin addiction, from risk factors to patterns of consumption, access to treatments, and outcomes. Objectives: To investigate gender differences in the VEdeTTE cohort of heroin addicts. Methods: VEdeTTE is a cohort of 10,454 heroin users enrolled between 1998 and 2001 in 115 public drug treatment centres in Italy. Clinical and personal information were collected at intake through a structured interview. Treatments were recorded using a standardized form. Gender differences were explored with regard to characteristics at intake, treatments, and retention in methadone maintenance and therapeutic community. Cox Proportional models were carried out to identify risk factors for treatment abandon. Results: Compared with men, at their first access to treatment women with drug addiction were younger, more frequently married, legally separated, divorced or widow, unemployed though better educated, HIV+; more frequently they lived with their partner and sons. They reported a higher use of sedatives, but a lower use of alcohol; more frequently they had psychiatric comorbidity, including depression, self-injuries, and suicide attempts. Psychotherapy was more frequently prescribed to women, pharmacological treatments to men. Methadone maintenance was less frequently abandoned by women. Drug abuse severity factors predicted abandon of methadone among women. High methadone doses and the combination with psychotherapy improved treatment retention in both genders. Low education level and severity factors among women and young age among men predicted abandon of therapeutic community. Conclusions: Gender differences in the VEdeTTE cohort suggest the need of a gender sensitive approach to improve treatment outcomes among heroin addicts
Studio VEdeTTE – Monografia n° 7 – Differenze di genere nello studio VEdeTTE. Studio VEdeTTE
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