All-Wales licensed premises intervention (AWLPI): a randomised controlled trial to reduce alcohol-related violence

An overlooked effect: domestic violence and alcohol policies in the night-time economy

BACKGROUND AND AIMS

Restrictive late-night alcohol policies are aimed at reducing alcohol-related violence but, to date, no evaluations of their impact on family and domestic violence have been conducted. This study aimed to measure whether modifying the drinking environment and restricting on-site trading hours affected reported rates of family and domestic violence.

DESIGN, SETTING AND PARTICIPANTS

This study used a non-equivalent control group design with two treatment sites and two matched control sites with pre- and postintervention data on rates of family and domestic violence assaults within local catchment areas of four late-night entertainment precincts in New South Wales, Australia, covering a population of 27 309 people. Participants comprised monthly counts of police-recorded incidents of domestic violence assaults from January 2001 to December 2019.

INTERVENTIONS AND COMPARATORS

Two variations of restrictive late-night interventions were used: restricted entry to late-night venues after 1:30 a.m., trading ceasing at 3:30 a.m. and other restrictions on alcohol service (Newcastle); and restricted entry to late-night venues after 1 a.m. and a range of restrictions on alcohol service (Hamilton). The comparators were no restrictions on late-night trading or modifications of the drinking environment (Wollongong and Maitland).

MEASUREMENTS

Measurements involved the rate, type and timing of reported family and domestic violence assaults.

FINDINGS

Reported rates of domestic violence assaults fell at both intervention sites, while reported domestic violence assaults increased over time in the control sites. The protective effects in Newcastle were robust and statistically significant across three main models. The relative reduction associated with the intervention in Newcastle was 29% (incidence rate ratio = 0.71, 95% confidence interval: 0.60-0.83) and an estimated 204 assaults were prevented across the duration of the study. The protective effects found in Hamilton were not consistently supported across the three main models.

CONCLUSIONS

Increases to late-night alcohol restrictions may reduce rates of domestic violence.

The effectiveness of an intervention to reduce alcohol-related violence in premises licensed for the sale and on-site consumption of alcohol: a randomized controlled trial

BACKGROUND AND AIMS

Premises licensed for the sale and consumption of alcohol can contribute to levels of assault-related injury through poor operational practices that, if addressed, could reduce violence. We tested the real-world effectiveness of an intervention designed to change premises operation, whether any intervention effect changed over time, and the effect of intervention dose.

DESIGN

A parallel randomized controlled trial with the unit of allocation and outcomes measured at the level of individual premises.

SETTING

All premises (public houses, nightclubs or hotels with a public bar) in Wales, UK.

PARTICIPANTS

A randomly selected subsample (n = 600) of eligible premises (that had one or more violent incidents recorded in police-recorded crime data; n = 837) were randomized into control and intervention groups.

INTERVENTION AND COMPARATOR

Intervention premises were audited by Environmental Health Practitioners who identified risks for violence and provided feedback by varying dose (informal, through written advice, follow-up visits) on how risks could be addressed. Control premises received usual practice.

MEASUREMENTS

Police data were used to derive a binary variable describing whether, on each day premises were open, one or more violent incidents were evident over a 455-day period following randomization.

FINDINGS

Due to premises being unavailable at the time of intervention delivery 208 received the intervention and 245 were subject to usual practice in an intention-to-treat analysis. The intervention was associated with an increase in police recorded violence compared to normal practice (hazard ratio = 1.34, 95% confidence interval = 1.20-1.51). Exploratory analyses suggested that reduced violence was associated with greater intervention dose (follow-up visits).

CONCLUSION

An Environmental Health Practitioner-led intervention in premises licensed for the sale and on-site consumption of alcohol resulted in an increase in police recorded violence.

A rapid evidence review of the effectiveness and cost-effectiveness of alcohol control policies: an English perspective

This paper reviews the evidence for the effectiveness and cost-effectiveness of policies to reduce alcohol-related harm. Policies focus on price, marketing, availability, information and education, the drinking environment, drink-driving, and brief interventions and treatment. Although there is variability in research design and measured outcomes, evidence supports the effectiveness and cost-effectiveness of policies that address affordability and marketing. An adequate reduction in temporal availability, particularly late night on-sale availability, is effective and cost-effective. Individually-directed interventions delivered to at-risk drinkers and enforced legislative measures are also effective. Providing information and education increases awareness, but is not sufficient to produce long-lasting changes in behaviour. At best, interventions enacted in and around the drinking environment lead to small reductions in acute alcohol-related harm. Overall, there is a rich evidence base to support the decisions of policy makers in implementing the most effective and cost-effective policies to reduce alcohol-related harm.

All-Wales Licensed Premises Intervention (AWLPI): a randomised controlled trial of an intervention to reduce alcohol-related violence

Background

Violence in and around premises licensed for the on-site sale and consumption of alcohol continues to burden the NHS with assault-related injuries.

Trial design

A randomised controlled trial with licensed premises as the unit of allocation, with additional process and cost-effectiveness evaluations.

Methods

Premises were eligible (n = 837) if they were licensed for on-site sale and consumption of alcohol, were within 1 of the 22 local authorities (LAs) in Wales and had previously experienced violence. Data were analysed using Andersen–Gill recurrent event models in an intention-to-treat analysis. An embedded process evaluation examined intervention implementation, reach, fidelity, dose and receipt. An economic evaluation compared costs of the intervention with benefits.

Intervention

Premises were randomised to receive a violence-reduction intervention, Safety Management in Licensed Environments (SMILE), which was delivered by an environmental health practitioner (EHP; the agent). SMILE consisted of an initial risk audit to identify known risks of violence, a follow-up audit scheduled to enforce change for premises in which serious risks had been identified, structured advice from EHPs on how risks could be addressed in premises and online materials that provided educational videos and related material.

Objective

To develop intervention materials that are acceptable and consistent with EHPs’ statutory remit; to determine the effectiveness of the SMILE intervention in reducing violence; to determine reach, fidelity, dose and receipt of the intervention; and to consider intervention cost-effectiveness.

Outcome

Difference in police-recorded violence between intervention and control premises over a 455-day follow-up period.

Randomisation

A minimum sample size of 274 licensed premises per arm was required, rounded up to 300 and randomly selected from the eligible population. Licensed premises were randomly assigned by computer to intervention and control arms in a 1 : 1 ratio. Optimal allocation was used, stratified by LA. Premises opening hours, volume of previous violence and LA EHP capacity were used to balance the randomisation. Premises were dropped from the study if they were closed at the time of audit.

Results

SMILE was delivered with high levels of reach and fidelity but similar levels of dose to all premises, regardless of risk level. Intervention premises (n = 208) showed an increase in police-recorded violence compared with control premises (n = 245), although results are underpowered. An initial risk audit was less effective than normal practice (hazard ratio = 1.34, 95% confidence interval 1.20 to 1.51) and not cost-effective. Almost all eligible intervention premises (98.6%) received the initial risk audit; nearly 40% of intervention practices should have received follow-up visits but fewer than 10% received one. The intervention was acceptable to EHPs and to some premises staff, but less so for smaller independent premises.

Conclusions

SMILE was associated with an increase in police-recorded violence in intervention premises, compared with control premises. A lack of follow-up enforcement visits suggests implementation failure for what was seen as a key mechanism of action. There are also concerns as to the robustness of police data for targeting and assessing outcome effectiveness, while intervention premises may have received greater attention from statutory agencies and, therefore, the identification of more violence than control premises. Although SMILE had high reach and was feasible and acceptable to EHPs, it was found to be ineffective and associated with increased levels of violence, compared with normal practice and it requires additional work to promote the implementation of follow-up enforcement visits. Future work will aim to better understand the role of intervention dose on outcomes and seek more objective measures of violence for use in similar trials.

Trial registration

Current Controlled Trials ISRCTN78924818.

Funding

This project was funded by the NIHR Public Health Research programme and will be published in full inPublic Health Research; Vol. 3, No. 10. See the NIHR Journals Library website for further project information.

Public Health and Alcohol Licensing in the UK

This article discusses the role of public health in alcohol licensing in the UK, with a particular focus on the implementation of national legislation and guidance in local regulatory environments. It identifies a number of practical and theoretical challenges through an analysis of historical trends in licensing practice, recent policy developments, and key licensing decisions and appeals. There are strong historical precedents for a focus on strategic harm reduction in UK licensing; however, because licensing primarily addresses the proximate effects of retail, the incorporation of health considerations presents novel difficulties. These center on the identification and deployment of data, the attribution of population-level harms to individual outlets, alcohol industry resistance, local authority risk aversion, and epistemological tensions between public health and licensing. The conclusion proposes that for public health perspectives to gain traction in the licensing environment, clear and realistic goals need to be established, research needs to emphasize local data, and there needs to be a better understanding of the approaches to evidence, knowledge, and decision making that characterize licensing and other local regulatory services.