1,720,963 research outputs found
Late-life suicide: machine learning predictors from a large European longitudinal cohort
Full text linkBackground: People in late adulthood die by suicide at the highest rate worldwide. However, there are still no tools to help predict the risk of death from suicide in old age. Here, we leveraged the Survey of Health, Ageing, and Retirement in Europe (SHARE) prospective dataset to train and test a machine learning model to identify predictors for suicide in late life. Methods: Of more than 16,000 deaths recorded, 74 were suicides. We matched 73 individuals who died by suicide with people who died by accident, according to sex (28.8% female in the total sample), age at death (67 ± 16.4 years), suicidal ideation (measured with the EURO-D scale), and the number of chronic illnesses. A random forest algorithm was trained on demographic data, physical health, depression, and cognitive functioning to extract essential variables for predicting death from suicide and then tested on the test set. Results: The random forest algorithm had an accuracy of 79% (95% CI 0.60-0.92, p = 0.002), a sensitivity of.80, and a specificity of.78. Among the variables contributing to the model performance, the three most important factors were how long the participant was ill before death, the frequency of contact with the next of kin and the number of offspring still alive. Conclusions: Prospective clinical and social information can predict death from suicide with good accuracy in late adulthood. Most of the variables that surfaced as risk factors can be attributed to the construct of social connectedness, which has been shown to play a decisive role in suicide in late life
Receiving Notification of Unexpected and Violent Death: A Qualitative Study of Italian Survivors
Full text link(1) Background: The loss of a significant person can be especially traumatic when death comes without warning and is due to causes such as suicide, murder and accidents. The way an individual is informed about the loss can affect the way of adapting to the loss and the quality of life of survivors. Communication modalities of the notifier may deeply influence the bereavement process. Aim: The present investigation aimed to explore the experience of those who received communication of such a type of death by a professional figure. (2) Method: Snowball sampling was used to recruit the participants to this qualitative study. Social networks, word of mouth and researchers’ acquaintances were used, including clients of the NGO De Leo Fund. A total of 52 Italian people (eight males and forty four females, mean age = 49.44; SD = 14.23) who received notification of the death of a loved one by police officers or by health professionals participated in the study. Deaths involved cases of suicide, murder, road accident and mountain accident. (3) Results: The following four key themes were identified: (a) how the communication took place; (b) reactions; (c) support; and (d) coping strategies. Only 22 participants reported having received clear information about the dynamics of what happened; the rest of the sample obtained only poor or ambiguous information. The majority of participants sought or received informal support from family and friends immediately after notification; however, some participants experienced a total lack of support. The opportunity to see the body of the loved one for the last farewell, when denied, caused discomfort in recipients of the news. (4) Conclusions: Even the impactful notification of a traumatic death such as suicide or road accident can be mitigated by the appropriate behaviour and attitude of notifiers, who should always avoid providing generic or ambiguous information about what happened. The notification process should not end with the simple transmission of the communication, but should also look at the following phases by including referral to supportive networks or bereavement services, aimed at assisting individuals in the immediate aftermath but also in the long term
Communicating Unexpected and Violent Death: The Experiences of Police Officers and Health Care Professionals
Full text linkBackground: The notification of unexpected and violent death represents a challenging experience for police officers and health workers. These professionals are exposed to very intense emotions during this task. Aim: We aimed to investigate the degree of preparation, and the emotions and attitudes of police officers and health professionals while communicating such a death. Method: An ad hoc online questionnaire was created and disseminated through Qualtrics software. The participants were recruited through the institutional channels of Police, the College of Physicians, the ONG De Leo Fund and the Department of General Psychology of the University of Padua. In this qualitative study, thematic content analysis was used to examine the responses. Results: A total of 155 individuals participated in the study (44 females, 111 males): 102 individuals were police officers, 23 were doctors and were 30 nurses. Five main themes were identified: (1) how the communication took place; (2) the experiences during the communication; (3) the difficulties encountered; (4) coping strategies, and (5) forms of support. Most communications were performed in person, and most represented an intense emotional experience for the notifiers. There is a generalised lack of specific preparation and training for this practice. The recipient’s characteristics (culture of origin, language, age, health conditions, psychological vulnerability) may add to the difficulties of the notification process. Professionals unload their tension by practicing sport, relying on their hobbies or interacting socially. The presence of other colleagues during and after the death notification is usually able to alleviate the burden of the communication. Conclusions: Communication modalities can have a profound impact on the recipients and intensify the trauma of the loss; however, they also have the possibility of mitigating it. The notification of a violent and unexpected death remains a difficult and challenging task for the notifier, which is potentially stressful and emotionally charged. The topic is of great relevance and more research should be promoted in this area
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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