Emergency medicine and police collaboration to prevent community violence

The completeness of routine registration of the counterpart in deliberate interpersonal violence in an urban emergency department

Most studies of violence from the health care system lack reliable information about the counterpart, which is important for distinguishing between different types of violence. Since 2014, the emergency department at Odense University Hospital in Denmark has routinely registered information about the counterpart. The purpose of this study was to evaluate the completeness of registering information about the counterpart during routine registration of victims of interpersonal violence in the emergency department. We included 11,200 victims treated at the emergency department 2014-2021. Using the patient registration data, we estimated the proportion of missing information on the counterpart, stratified by age group and gender of the victim as well as type of incident and severity of injury. Information about the counterpart was registered in 91.5 % of all cases. In 43.1 % (CI: 42.2-44.0) of the cases, the counterpart was unknown to the victim, in 24.3 % (CI: 23.5-25.1) the counterpart was an acquaintance, in 10.5 % (CI: 10.0-11.1) the counterpart was a partner, and in 4.2 % (CI: 3.8-4.5) the counterpart was another family member. The proportion of cases with no information about the counterpart varied with gender, age group, time of violence, place of violence, weapon use, and severity of injury. Half of the victims injured with firearms (46.2 %, CI: 30.1-62.8) and one-fourth of the victims injured with knives (25.9 %, CI: 21.9-30.2) did not reveal information about the counterpart. The majority of the victims revealed information about the counterpart, making it possible to analyse different types of violence separately.

The finite element method-based pattern recognition approach for the classification of patient-specific gunshot injury

Violence related injuries and deaths mostly caused by firearms are a major problem throughout the world. Understanding the factors that control the extent of hard-soft tissue wound patterns using computer imaging techniques, numerical methods, and machine learning algorithms may help physicians to diagnose and treat those injuries more properly. Here, we investigate the use of computational results coupled with the pattern recognition algorithms to develop an approach for forensic applications. Initially, computer tomography (CT) images of the patient whose leg was shot by a 9 × 19 parabellum bullet are used to construct the FE models of that patient’s femoral bone and the surrounding soft tissues. Then, Hounsfield units-based material properties are assigned to elements of the bone. To simulate the full range of loading conditions encountered in ballistic events, a constitutive model that captures the strain-rate dependent response is implemented. The entrance pathway vector of the bullet is directed in accordance with the patient’s wound and the simulations are deployed for the cases having various inlet velocities such as 150, 200, 250, 300, and 350 m/s. Once the FE results for each case are obtained, they are processed with supervised machine learning algorithms to classify the wound and inlet velocity correspondence. The results demonstrate that they can be diagnosed with a percent accuracy of 97.3, 97.5, and 98.3 for the decision tree (DT), k-nearest neighbors (kNN) and support vector machine (SVM) classifier, respectively. This approach may provide a useful framework in classifying the wound type, predicting the bullet impact velocity and its firing distance.

Implementing the Cardiff Model for violence prevention: using the diffusion of innovation theory to understand facilitators and barriers to implementation

OBJECTIVE

Interpersonal violence is an ongoing, vexing public health issue. Communities require comprehensive timely data on violence to plan and implement effective violence prevention strategies. Emergency departments (EDs) can play an important role in violence prevention. EDs treat injuries associated with violent crime, and they are well-positioned to systematically collect information about these injuries, including the location where the injury occurred. The Cardiff Model for Violence Prevention (The Cardiff Model) provides a framework for interdisciplinary data collection and sharing.

METHODS

This paper uses the Diffusion of Innovation Theory as a framework to present our experiences of implementing the Cardiff Model in several EDs that serve the Milwaukee area, and to detail the processes of data collection, linking and presentation across four different hospital systems.

RESULTS

Implementing a city-wide data collection effort that involves multiple hospital systems is challenging. Viewing our findings through the lens of the Diffusion of Innovations theory provides a way to anticipate facilitators and challenges to Cardiff Model implementation in a hospital setting.

CONCLUSIONS

Facilitators and barriers to Cardiff Model adoption in the ED setting can be understood using the Diffusion of Innovation theory, and barriers can be interrupted through careful planning and continuous communication between partners.

Poor Health and Violent Crime Hot Spots: Mitigating the Undesirable Co-Occurrence Through Focused Place-Based Interventions

INTRODUCTION

The geographic overlap of violence and poor health is a major public health concern. To understand whether and how place-based interventions targeting micro-geographic places can reduce this undesirable co-occurrence, the study addresses 2 important questions. First, to what extent are deteriorated health conditions associated with living at violent crime hot spots? Second, through what mechanisms can focused place-based interventions break the association between living with violence and deteriorated health?

METHODS

This study used survey data from 2,724 respondents living on 328 street segments that were categorized as violent crime hot spots (181 segments with 1,532 respondents) versus non-hot spots (147 segments with 1,192 respondents) in 2013-2014 in Baltimore, Maryland. Propensity score analysis assessed whether individuals living at violent crime hot spots had lower general health perceptions than people living at non-hot spots. Marginal structural models estimated the proportion of total effects mediated by 3 theoretically informed intervening mechanisms. Analyses were conducted in 2019.

RESULTS

Respondents living at violent crime hot spots had a lower level of self-rated general health (b= -0.096, 95% CI= -0.176, -0.015) and higher levels of health limitations (b=0.068, 95% CI=0.027, 0.109) and problems (OR=2.026, 95% CI=1.225, 3.349) than those living at non-hot spots. Enhanced perceptions of safety, collective efficacy, and police legitimacy may break the association between living in places with extremely high levels of violence and deteriorated health.

CONCLUSIONS

Indicated or selective strategies are urgently needed to target micro-geographic locations with known increased risks, supplementing universal strategies applied to a broader community.

Who Shot Ya? How Emergency Departments Can Collect Reliable Police Shooting Data

This paper examines an alternative solution for collecting reliable police shooting data. One alternative is the collection of police shooting data from hospital trauma units, specifically hospital-based violence intervention programs. These programs are situated in Level I trauma units in many major cities in USA. While the intent of these programs is to reduce the risk factors associated with trauma recidivism among victims of violent injury, they also collect reliable data on the number of individuals treated for gunshot wounds. While most trauma units do a great job collecting data on mode of injury, many do not collect data on the circumstances surrounding the injury, particularly police-involved shootings. Research protocol on firearm-related injury conducted in emergency departments typically does not allow researchers to interview victims of violent injury who are under arrest. Most victims of nonfatal police-involved shootings are under arrest at the time they are treated by the ED for their injury. Research protocol on victims of violent injury often excludes individuals under arrest; they fall under the exclusion criteria when recruiting potential participants for research on violence. Researchers working in hospital emergency departments are prohibited from recruited individuals under arrests. The trauma staff, particularly ED physicians and nurses, are in a strategic position to collect this kind of data. Thus, this paper examines how trauma units can serve as an alternative in the reliable collection of police shooting data.

A Stab in the Dark?: A Research Note on Temporal Patterns of Street Robbery

OBJECTIVES

Test the influence of darkness in the street robbery crime event alongside temperature.

METHODS

Negative binomial regression models tested darkness and temperature as predictors of street robbery. Units of analysis were four 6-hr time intervals in two U.K. study areas that have different levels of darkness and variations of temperature throughout the year.

RESULTS

Darkness is a key factor related to robbery events in both study areas. Traversing from full daylight to full darkness increased the predicted volume of robbery by a multiple of 2.6 in London and 1.2 in Glasgow. Temperature was significant only in the London study area. Interaction terms did not enhance the predictive power of the models.

CONCLUSION

Darkness is an important driving factor in seasonal variation of street robbery. A further implication of the research is that time of the day patterns are crucial to understanding seasonal trends in crime data.

Effectiveness of anonymised information sharing and use in health service, police, and local government partnership for preventing violence related injury: experimental study and time series analysis

OBJECTIVE

To evaluate the effectiveness of anonymised information sharing to prevent injury related to violence.

DESIGN

Experimental study and time series analysis of a prototype community partnership between the health service, police, and local government partners designed to prevent violence.

SETTING

Cardiff, Wales, and 14 comparison cities designated "most similar" by the Home Office in England and Wales.

INTERVENTION

After a 33 month development period, anonymised data relevant to violence prevention (precise violence location, time, days, and weapons) from patients attending emergency departments in Cardiff and reporting injury from violence were shared over 51 months with police and local authority partners and used to target resources for violence prevention.

MAIN OUTCOME MEASURES

Health service records of hospital admissions related to violence and police records of woundings and less serious assaults in Cardiff and other cities after adjustment for potential confounders.

RESULTS

Information sharing and use were associated with a substantial and significant reduction in hospital admissions related to violence. In the intervention city (Cardiff) rates fell from seven to five a month per 100,000 population compared with an increase from five to eight in comparison cities (adjusted incidence rate ratio 0.58, 95% confidence interval 0.49 to 0.69). Average rate of woundings recorded by the police changed from 54 to 82 a month per 100,000 population in Cardiff compared with an increase from 54 to 114 in comparison cities (adjusted incidence rate ratio 0.68, 0.61 to 0.75). There was a significant increase in less serious assaults recorded by the police, from 15 to 20 a month per 100,000 population in Cardiff compared with a decrease from 42 to 33 in comparison cities (adjusted incidence rate ratio 1.38, 1.13 to 1.70).

CONCLUSION

An information sharing partnership between health services, police, and local government in Cardiff, Wales, altered policing and other strategies to prevent violence based on information collected from patients treated in emergency departments after injury sustained in violence. This intervention led to a significant reduction in violent injury and was associated with an increase in police recording of minor assaults in Cardiff compared with similar cities in England and Wales where this intervention was not implemented.

Preventing violence — caring for victims

Part of the great tradition of surgery, exemplified by the Royal College precept, 'From Here Health', is that surgeons are committed to prevention as well as cure. King James IV and his able contemporary in China, where this lecture was delivered, Emperor Hongzhi, would have approved of it. This tradition has, perhaps, been neglected since the emergence of public health as a medical specialty. However, opportunities and reasons for surgeons to contribute to prevention have never been greater. Community violence prevention--increasing public safety in the towns and cities in which surgeons work--is an example. Primary prevention of injury achieved by collecting and sharing unique information about weapons and the locations of assault, secondary prevention achieved by combining wound care with motivational interviewing to reduce alcohol misuse, and tertiary prevention achieved by early referral to mental health professionals for treatment of post-traumatic stress, have been integrated into a new care pathway which combines prevention with surgical care. Individuals and communities would benefit substantially if every surgical specialty incorporated prevention--a professionally highly-rewarding activity--into its training curriculum.

Preventing alcohol-related violence: a public health approach

BACKGROUND

Studies of the relationship between alcohol and violent injury confirm that while there is some evidence of a direct pharmacological association, many other factors are relevant to the frequency and severity of both violent perpetration and being a victim of violence. It is now widely recognized that official police statistics are a poor indicator of the nature and extent of public violence.

AIMS

Accident and emergency departments and trauma surgeons are not only in a position to provide more accurate information on the nature and extent of clinically significant injury, but they can contribute substantially to violence prevention. This can be achieved through individually targeted interventions in conjunction with other clinicians on the one hand, and on the other through public health and community initiatives, in conjunction with other community agencies, including the police and local authorities. This article describes some of those initiatives and the evidence underpinning them.

A moral dilemma in the emergency room: confidentiality and domestic violence

A professional colleague presents for treatment at an Emergency Department. Investigations reveal signs that indicate the possibility of domestic violence. This is subsequently confirmed in confidence. Personal reflections identify and explore the dilemmas and the ethical issues involved.

Injury recurrence among untreated and medically treated victims of violence in the USA

Studies on the risk of intentional re-injury tend to use samples of admissions to hospitals and conclude that prior intentional injury is predictive of future such admissions. Limiting samples to persons receiving medical attention misses the equally important population of those intentionally injured but not receiving medical attention. Approximately 2 million violence-related injuries go medically unevaluated each year in the United States. A significant portion of these are severe. Including this population captures the dark figure of untreated intentional injury and allows for the estimation of the effects of medical intervention on future risk. This paper tests the hypothesis that those going without medical evaluation will have higher odds of injury recurrence than the traditionally studied population of those receiving health care. Data are drawn from the National Crime Victimization Survey (NCVS), an ongoing and nationally representative longitudinal survey of households in the United States. The NCVS collects information at the household and person-level, and when victimization is identified through screener questions, at the incident-level. In addition to capturing crime and violence reported to the police and medical professionals, this methodology captures incidents that go unreported and untreated. Controlling for correlates of violence and reinjury, persons injured in violent events receiving medical attention alone, or in combination with police notification, are at substantially lower risk of incurring future violence and violence-related injuries than persons injured but not receiving medical or police attention.

Explaining feast or famine in randomized field trials. Medical science and criminology compared

A feast of randomized controlled trials (RCTs) in medical science and comparative famine in criminology can be explained in terms of cultural and structural factors. Of central importance is the context in which the evaluation of interventions is done and the difference in status of situational research in the two disciplines. Evaluation of medical interventions has traditionally been led by practitioner (clinical) academics. This is not the case in criminal justice, where theory has had higher status than intervention research. Medical science has advanced in, or closely associated with, university teaching hospitals, but links between criminology and criminal justice services are far more tenuous. The late development of situational crime prevention seems extraordinary from a medical perspective, as does the absence of university police schools in the United Kingdom and elsewhere. These structural and cultural factors explain concentration of expectation, resource, and RCT productivity in medical science. The Campbell Collaboration and the Academy of Experimental Criminology are forces which are reducing this polarization of feast and famine in RCTs. But unless scientific criminology is embedded in university schools which are responsible for the education and training of law, probation, and police practitioners, convergence in terms of RCTs and implementation of findings in practice seems unlikely.

Use of, and outputs from, an assault patient questionnaire within accident and emergency departments on Merseyside

OBJECTIVES

To describe the implementation, use of, and outputs from an assault patient questionnaire (APQ) introduced in accident and emergency (A&E) departments to determine Crime & Disorder and Community Safety priorities on Merseyside, a metropolitan county in north west England, UK.

METHODS

Why and how the APQ was implemented, data collected, and information obtained. The subsequent incorporation of the APQ into the Torex Patient Administration System (PAS) at the Royal Liverpool University Hospital A&E department and its routine completion by trained reception staff.

RESULTS

Analysis is based upon anonymised data-for example, patient ID and date of birth information is suppressed. A summary of "baseline" information obtained from the data collected is provided.

CONCLUSIONS

It is possible for the APQ to be implemented at no extra cost in a large A&E department in an acute general teaching hospital. Valuable intelligence can be obtained for Crime & Disorder Act and Community Safety processes. The APQ forms part of a medium to long term strategy to prevent and reduce violent assaults in the community that subsequently require treatment in an A&E department. Such incidents include assaults both inside and outside licensed premises, attacks by strangers on the street, and domestic violence. Emphasis is also placed upon the feedback of results to staff in A&E departments.

Recording of community violence by medical and police services

OBJECTIVES

To determine the extent to which community violence that results in injury treated in emergency departments appears in official police records and to identify age/gender groups at particular risk of under-recording by the police.

METHODS

Non-confidential data for patients with assault related injury treated in the emergency departments of two hospitals in one South Wales city (Swansea) during a six month period were compared with data relating to all recorded crimes in the category "Violence against the person" in the police area where the hospitals were located.

RESULTS

Over the six month period a total of 1513 assaults were recorded by Swansea emergency departments and the police (1019, 67.3% injured males and 494, 32.7% injured females). The majority of these assaults (993, 65.6%) were recorded exclusively by emergency departments; 357 (23.6%) were recorded only by the police and 163 (10.8%) were recorded by both emergency departments and the police. Equal proportions of males (67.3%) and females (67.5%) injured in assaults were recorded by both emergency departments and the police, but men were more likely to have their assault recorded exclusively in emergency departments (odds ratio (OR) 2.1, 95% confidence interval (CI) 1.7 to 2.7) while women were more likely to have their assault recorded exclusively by the police (OR 2.5, 95% CI 2.0 to 3.2). There were no significant relationships between exclusive emergency department recording and increasing age (OR 1.0, 95% CI 0.9 to 1.2), exclusive police recording and increasing age (OR 1.1, 95% CI 1.0 to 1.2), or between age and dual recording (OR 0.9, 95% CI 0.8 to 1.0).

CONCLUSIONS

Most assaults leading to emergency department treatment, particularly in which males were injured, were not recorded by the police. Assaults on the youngest group (0-10, particularly boys) were those least likely to be recorded by police and females over age 45, the most likely. Emergency department derived assault data provide unique perspectives of community violence and police detection.

Criminal deterrence as a public health strategy

Deterrence is an established theme in criminal justice, but its role in prevention of assault has been treated with ambivalence and even hostility in medicine. The extent to which offenders can be persuaded, through knowledge of criminal and health risks, not to injure others is emerging from studies of the health effects of firearm and other crime legislation, and from macro-level studies and controlled experiments of police interventions. There is convincing evidence that motorists can be deterred from alcohol-impaired driving, and recognition that specific, targeted, and visible police work and increasing certainty of punishment are effective interventions. By contrast, duration of imprisonment and generic police initiatives such as blanket increases in police numbers seem to have little effect on deterrence, at least in the context of the decline in US homicide rates since 1991, to which demographic and economic factors seem to have contributed little. Together with established and cost-effective preschool education and early family support, targeted policing and increasing rates of conviction should be integrated into strategies for injury prevention.