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Juan José López-Ossorio

Bio: Juan José López-Ossorio is an academic researcher from Autonomous University of Madrid. The author has contributed to research in topics: Psychology & Poison control. The author has an hindex of 5, co-authored 10 publications receiving 141 citations.

Papers
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Journal ArticleDOI
TL;DR: Empirical evidence about static indicators and new relevant dynamic indicators in the victims’ police protection management is presented and practical implications for future police risk assessments are discussed.

40 citations

Journal ArticleDOI
TL;DR: In this article, a prospective longitudinal study was performed followed for 3 and 6 months of 407 women who reported being victims of violence from their partner or former partner, and the results obtained by logistic regression analysis provide an AUC = 0.71 for time intervals at risk for three months (P <.003), with an odds ratio of 6.58 (95% CI: 1.899-22.835).

36 citations

Journal ArticleDOI
TL;DR: In this paper, the authors reviewed the description of the problem from a gender perspective and the existence of asymmetry, the perspective of violence and its description of differential risk factors, and the ecological model that connects personal, contextual, and societal variables.

28 citations

Journal ArticleDOI
TL;DR: In el presente trabajo, en contextos juridicos y cientificos existe preocupacion por la falta de criterios tecnicos for valorar the prueba pericial por parte de jueces and tribunales, dada la influencia que puede tener in las resoluciones judiciales as discussed by the authors.

28 citations

Journal ArticleDOI
TL;DR: In this article, the authors describe the rationale, development, and validation of the intimate partner violence (IPV) police risk assessment forms of the VioGen System of the Spanish Ministry of Interior (VPR4.0 and VPER4.
Abstract: This study describes the rationale, development, and validation of the intimate partner violence (IPV) police risk assessment forms of the VioGen System of the Spanish Ministry of Interior (VPR4.0 and VPER4.0), which promote greater predictive effectiveness and an improvement in the IPV law enforcement prevention. A validation study of the mentioned protocols is presented, including inter-observer reliability, estimated by the equivalence or inter-judge reliability method, while the convergent validity of these protocols was calculated with the RVD-BCN protocol. The sample consisted of 6613 new cases of IPV included in the VioGen System over a period of 2 months and which were longitudinally followed up for 6 months. The discrimination indexes are not only the summarized odds ratio (OR), area under the ROC curve (AUC), sensitivity, and specificity, but also the calibration indexes positive predictive value (PPV) and negative predictive value (NPV). The results show the suitability of using procedures which, in a coordinated manner, incorporate two risk assessment instruments, one for a first screening assessment and a second one to re-assess IPV danger situations on a regular basis. The values obtained are within the margins reported by different meta-analyses regarding this type of instruments, which supports their use for professional practice.

19 citations


Cited by
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01 Nov 2011
TL;DR: In this paper, the authors provide a synthesis of methodologically sound research to understand how intimate partner violence is best conceptualized, and what the implications of this evidence based theory hold for practice and policy.
Abstract: Theoretical perspectives underlying hypotheses about the nature and etiology of intimate partner violence are important as they inform professionals how they should best respond to reduce or eliminate this social problem. Therefore, it is crucial that practice led initiatives are driven by theory that is supported by good quality empirical evidence. This review aims to provide a synthesis of methodologically sound research to understand how intimate partner violence is best conceptualized, and what the implications of this evidence based theory hold for practice and policy. A wealth of evidence supporting the need to further explore and respond to the spectrum of partner violence from a gender inclusive perspective is demonstrated. Implications of the evidence for multidisciplinary work, prevention, assessment, treatment, and policy related to intimate partner violence are discussed.

143 citations

01 Jan 2010
TL;DR: In this paper, the authors examined the effectiveness of the protection order by following 210 women for 6 months after obtaining a protective order and found that they were less fearful of future harm from the PO partner at the 6-month follow-up, and a vast majority felt the protective order was fairly or extremely effective.
Abstract: Many victims, victim advocates, and even law enforcement believe that protective orders are “just a piece of paper,” suggesting that they do not work or are not effective. This study examined protective order effectiveness by following 210 women for 6 months after obtaining a protective order. There are four main themes that were identified from the study results. First, protective orders were not violated for half of the women in the sample during the 6-month follow-up period. Second, even among those who experienced violations, there were significant reductions in abuse and violence. Third, overall, women were less fearful of future harm from the PO partner at the 6-month follow-up, and a vast majority felt the protective order was fairly or extremely effective. Fourth, stalking emerges as a significant risk factor for protective order violations, sustained fear, and lower perceived effectiveness of the protective order. Implications for practice and future research are discussed.

68 citations

07 Mar 2013
TL;DR: In this paper, the authors analyse the variation in rates of violence in individuals identified as high risk by structured risk assessment instruments (SRAIs) and use binomial logistic regression to study heterogeneity.
Abstract: Background Rates of violence in persons identified as high risk by structured risk assessment instruments (SRAIs) are uncertain and frequently unreported by validation studies. Aims To analyse the variation in rates of violence in individuals identified as high risk by SRAIs. Method A systematic search of databases (1995–2011) was conducted for studies on nine widely used assessment tools. Where violence rates in high-risk groups were not published, these were requested from study authors. Rate information was extracted, and binomial logistic regression was used to study heterogeneity. Results Information was collected on 13 045 participants in 57 samples from 47 independent studies. Annualised rates of violence in individuals classified as high risk varied both across and within instruments. Rates were elevated when population rates of violence were higher, when a structured professional judgement instrument was used and when there was a lower proportion of men in a study. Conclusions After controlling for time at risk, the rate of violence in individuals classified as high risk by SRAIs shows substantial variation. In the absence of information on local base rates, assigning predetermined probabilities to future violence risk on the basis of a structured risk assessment is not supported by the current evidence base. This underscores the need for caution when such risk estimates are used to influence decisions related to individual liberty and public safety.

51 citations

Journal ArticleDOI

48 citations

Journal ArticleDOI
TL;DR: In this paper, the authors developed and validated a new instrument to assess victim-blaming attitudes in cases of intimate partner violence against women (IPVAW) and found that the latent structure of the instrument was one-dimensional and particularly informative for medium and high levels of victim blaming attitudes.

46 citations