Violence-related ambulance call-outs in the North West of England: a cross-sectional analysis of nature, extent and relationships to temporal, celebratory and sporting events

Description of Trends over the Week in Alcohol-Related Ambulance Attendance Data

Alcohol harms are often determined using a proxy measure based on temporal patterns during the week when harms are most likely to occur. This study utilised coded Australian ambulance data from the Victorian arm of the National Ambulance Surveillance System (NASS) to investigate temporal patterns across the week for alcohol-related ambulance attendances in 2019. These patterns were examined by season, regionality, gender, and age group. We found clear temporal peaks: from Friday 6:00 p.m. to Saturday 3:59 a.m. for both alcohol-involved and alcohol-intoxication-related attendance, from Saturday 6:00 p.m. to Sunday 4:59 a.m. for alcohol-involved attendances, and from Saturday 5:00 p.m. to Sunday 4:49 a.m. for alcohol-intoxication-related attendances. However, these temporal trends varied across age groups. Additionally, hours during Thursday and Sunday evenings also demonstrated peaks in attendances. There were no substantive differences between genders. Younger age groups (18-24 and 25-29 years) had a peak of alcohol-related attendances from 7:00 p.m. to 7:59 a.m. on Friday and Saturday nights, whereas the peak in attendances for 50-59 and 60+ years was from 5:00 p.m. to 2:59 a.m. on Friday and Saturday nights. These findings further the understanding of the impacts of alcohol during different times throughout the week, which can guide targeted policy responses regarding alcohol use and health service capacity planning.

Holiday effect on injuries sustained by assault victims seen in US emergency departments

PURPOSE

There has been a limited and inconsistent analysis of assault-related injury patterns associated with holidays. We investigated the temporal variation in assault-related injuries presenting to US emergency departments (ED) around holidays.

METHODS

We examined data from the National Electronic Injury Surveillance System Database between 2005 and 2017 for six categories of assault-related injuries: altercation, sexual assault, robbery, intimate partner violence (IPV), other specified, and unknown. Differences between holiday and non-holiday periods were analyzed for each assault type.

RESULTS

There was a significant difference in overall assault-related injury visits between holiday and non-holiday periods (p < 0.00001). Of over 21 million assault-related injury visits, 14.9% occurred during holiday periods and 85% during non-holiday periods. The difference between the daily number of assault-related ED visits was also significantly higher during the holiday period than baseline non-holiday period (p < 0.00001). Altercations and IPV were significantly higher than baseline for New Year's Eve (highest), St. Patrick's Day, July 4th, and Labor Day. IPV also remained significantly higher than baseline during Thanksgiving and Christmas. Sexual assaults were significantly higher than baseline during the New Year's Eve period but lower than baseline during Christmas and Easter.

CONCLUSIONS

Holidays are associated with increase in several assault-related injuries. The information can help allocate healthcare resources and guide prevention strategies.

Learning from alcohol (policy) reforms in the Northern Territory (LEARNT): protocol for a mixed-methods study examining the impacts of the banned drinker register

INTRODUCTION

The Banned Drinker Register (BDR) was reintroduced in the Northern Territory (NT) in September 2017. The BDR is a supply reduction measure and involves placing people who consume alcohol at harmful levels on a register prohibiting the purchase, possession and consumption of alcohol. The current study aims to evaluate the impacts of the reintroduction of the BDR, in the context of other major alcohol policy initiatives introduced across the NT such as Police Auxiliary Liquor Inspectors and a minimum unit price for alcohol of US$1.30 per standard drink.

METHODS AND ANALYSES

The Learning from Alcohol (policy) Reforms in the Northern Territory project will use a mixed-methods approach and contain four major components: epidemiological analysis of trends over time (outcomes include health, justice and social welfare data); individual-level data linkage including those on the BDR (outcomes include health and justice data); qualitative interviews with key stakeholders in the NT (n≥50); and qualitative interviews among people who are, or were previously, on the BDR, as well as the families and communities connected to those on the BDR (n=150). The impacts of the BDR on epidemiological data will be examined using time series analysis. Linked data will use generalised mixed models to analyse the relationship between outcomes and exposures, utilising appropriate distributions. Qualitative data will be analysed using thematic analysis.

ETHICS AND DISSEMINATION

Ethics approvals have been obtained from NT Department of Health and Menzies School of Health Research Human Research Ethics Committee (HREC), Central Australia HREC and Deakin University HREC. In addition to peer-reviewed publications, we will report our findings to key organisational, policy, government and community stakeholders via conferences, briefings and lay summaries.

Association between ambient temperature and intentional injuries: A case-crossover analysis using ambulance transport records in Japan

BACKGROUND

Epidemiological studies based on mortality and crime data have indicated that short-term exposure to higher temperature increases the risk of suicide and violent crimes. However, there are few studies on non-fatal intentional injury, especially on non-fatal self-harm which is much more common than suicide.

OBJECTIVES

We aimed to clarify how short-term exposure to temperature is associated with emergency ambulance transport caused by intentional injuries including acts of self-harm and assault.

METHOD

We applied a time-stratified case-crossover design using a conditional quasi-Poisson regression model for each of the 46 prefectures. All temperatures were converted to percentile value for each prefecture, to account for the varied climate across Japan. A Distributed Lag Non-Linear Model was used to explore the temperature percentile and lag pattern. The prefecture-specific results were combined using a meta-analysis with the random effects model.

RESULT

Between 2012 and 2015, the number of acts of self-harm and assault across all 46 prefectures totaled 151,801 and 95,861, respectively. We found that as the temperature increased, the relative risk (RRs) for both self-harm and assault behaviors increased in a nearly linear manner. The pooled relative risk at the 99th percentile temperature for self-harm behavior was 1.11 (95% CI: 1.07, 1.15) compared with the risk at the 1st percentile temperature, and that for assault was 1.12 (95% CI: 1.08, 1.16) at lag 0. The RRs were highest at lag0 and less than 1 at lag7-20.

CONCLUSION

The present study found that short-term exposure to higher temperature promotes the risk of emergency ambulance transport due to acts of self-harm and assault. The lag pattern indicates a possible "displacement" effect. These results suggest that exposure to high temperatures may potentially function as a trigger for intentional injuries.

Aggression and violence at ambulance attendances where alcohol, illicit and/or pharmaceutical drugs were recorded: A 5-year study of ambulance records in Victoria, Australia

BACKGROUND

This study describes the frequency and characteristics of aggression and/or violence in ambulance attendances involving alcohol, illicit and/or pharmaceutical drug use in Victoria, Australia between January 2012 and January 2017.

METHODS

Patient characteristics, context, and substance use involvement in ambulance attendances were examined to determine associations with attendances where aggression and/or violence was recorded.

RESULTS

There were 205,178 ambulance attendances where use of alcohol, pharmaceutical drugs or illicit substances contributed to the reason for the attendance. Paramedics recorded acts of aggression and/or violence in 11,813 (5.76 %) of these attendances. Aggression/violence was more likely to be recorded in certain contexts. Compared with attendances where aggression/violence was not recorded, attendances where aggression/violence was recorded were significantly more likely to involve younger and male patients, and occur on Friday and Saturday nights. Alcohol intoxication was involved in more than half of attendances where aggression/violence was recorded, and was almost twice as prevalent as those involving illicit drug use where aggression/violence was recorded. This pattern was consistent across all hours, high-alcohol hours only, by metropolitan/regional location, and by police co-attendance.

CONCLUSIONS

Aggression and violence are frequently recorded in ambulance attendances involving alcohol, pharmaceutical drugs or illicit substances, and, most often involve alcohol. This violence poses a recurring threat to the health and safety of paramedics, bystanders, and patients. Greater priority should be given to reducing alcohol-related violence through evidence-based policy measures targeting high-risk groups (e.g. young adult males) and contexts (e.g. weekends, late at night) where harm is most likely to occur.

[Preparation of a questionnaire to detect cases of hate violence in emergency rooms]

OBJECTIVE

In the context of the SIVIVO project, the development of a tool to facilitate the detection, recording and description of cases of hate violence and its consequences on health was proposed.

METHOD

A two-round Delphi method was used with experts from clinical-care, public health, epidemiological, academic, administration and non-governmental organizations to assess the relevance of different items using a Likert scale, presenting the results with medians and coefficients of variation.

RESULTS

The best evaluated questions, with scores equal to or greater than 4, and which make up the final version of the questionnaire are the relative socio-demographic characteristics of the victim, the injuries, description of the incident, the motivations perceived by the aggrieved person, possible evidence of hatred, the intention to denounce and the perception of the health personnel of the motive for the aggression. The piloting showed the adequacy of the questions that were finally selected.

CONCLUSIONS

The systematic incorporation of this tool can help us to learn the magnitude and characteristics of hate violence and its impact on health. This information would allow the elaboration of prevention and intervention strategies aimed, specifically, at the sectors of the population most exposed to this type of violence.

[Interpersonal violence in Spain through national hospital discharge survey]

OBJECTIVE

To describe the epidemiology of interpersonal violence in Spain.

METHOD

Descriptive study of the cases of patients with secondary diagnosis of aggression registered on a national hospital discharge database, between 1999 and 2011, using the codes from E960 to E969 of the ICD-9. The distribution by sex, age and type of discharge, associated morbidity, mortality and by autonomous community is described. The quality of the record is studied according to its temporal variation.

RESULTS

The case profile of aggression in men (85%) is of a patient between 15 and 44 years old, who in 93.7% of cases requires urgent care and whose severity is moderate (95% discharge home). Two point five percent of patients are readmitted and death occurs in1.1%. The profile in women (15%) differs slightly, with an age between 31 and 52 years, 94% require urgent attention, although 96% have moderate severity; 3% are readmitted and 1.7% die.

CONCLUSIONS

Although they need to be improved to avoid certain limitations, health information systems are a rich source of data that can be used for research in health and, through their results, for the development of prevention plans and intervention in matters of violence.