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.

The clinical effectiveness and cost-effectiveness of second-eye cataract surgery: a systematic review and economic evaluation

BACKGROUND

Elective cataract surgery is the most commonly performed surgical procedure in the NHS. In bilateral cataracts, the eye with greatest vision impairment from cataract is operated on first. First-eye surgery can improve vision and quality of life. However, it is unclear whether or not cataract surgery on the second eye provides enough incremental benefit to be considered clinically effective and cost-effective.

OBJECTIVE

To conduct a systematic review of clinical effectiveness and analysis of cost-effectiveness of second-eye cataract surgery in England and Wales, based on an economic model informed by systematic reviews of cost-effectiveness and quality of life.

DATA SOURCES

Twelve electronic bibliographic databases, including MEDLINE, EMBASE, Web of Science, The Cochrane Library and the Centre for Reviews and Dissemination databases were searched from database inception to April 2013, with searches updated in July 2013. Reference lists of relevant publications were also checked and experts consulted.

REVIEW METHODS

Two reviewers independently screened references, extracted and checked data from the included studies and appraised their risk of bias. Based on the review of cost-effectiveness, a de novo economic model was developed to estimate the cost-effectiveness of second-eye surgery in bilateral cataract patients. The model is based on changes in quality of life following second-eye surgery and includes post-surgical complications.

RESULTS

Three randomised controlled trials (RCTs) of clinical effectiveness, three studies of cost-effectiveness and 10 studies of health-related quality of life (HRQoL) met the inclusion criteria for the systematic reviews and, where possible, were used to inform the economic analysis. Heterogeneity of studies precluded meta-analyses, and instead data were synthesised narratively. The RCTs assessed visual acuity, contrast sensitivity, stereopsis and several measures of HRQoL. Improvements in binocular visual acuity and contrast sensitivity were small and unlikely to be of clinical significance, but stereopsis was improved to a clinically meaningful extent following second-eye surgery. Studies did not provide evidence that second-eye surgery significantly affected HRQoL, apart from an improvement in the mental health component of HRQoL in one RCT. In the model, second-eye surgery generated 0.68 incremental quality-adjusted life-years with an incremental cost-effectiveness ratio of £1964. Model results were most sensitive to changes in the utility gain associated with second-eye surgery, but otherwise robust to changes in parameter values. The probability that second-eye surgery is cost-effective at willingness-to-pay thresholds of £10,000 and £20,000 is 100%.

LIMITATIONS

Clinical effectiveness studies were all conducted more than 9 years ago. Patients had good vision pre surgery which may not represent all patients eligible for second-eye surgery. For some vision-related patient-reported outcomes and HRQoL measures, thresholds for determining important clinical effects are either unclear or have not been determined.

CONCLUSIONS

Second-eye cataract surgery is generally cost-effective based on the best available data and under most assumptions. However, more up-to-date data are needed. A well-conducted RCT that reflects current populations and enables the estimation of health state utility values would be appropriate. Guidance is required on which vision-related, patient-reported outcomes are suitable for assessing effects of cataract surgery in the NHS and how these measures should be interpreted clinically.

STUDY REGISTRATION

This project is registered as PROSPERO CRD42013004211.

FUNDING

This project was funded by the National Institute for Health Research Health Technology Assessment programme.

The Effect of Weight Change on Volumetric Measures of Mammographic Density

The association between changing body mass index (BMI) and mammographic breast density is important to better evaluate how to adjust for BMI gain/loss in longitudinal studies of density and breast cancer risk. Increasing BMI has been associated with decreasing percent dense area but the effect on absolute dense area is unclear. No studies have explored a longitudinal association using volumetric density measurement. Methods: We examined the association between change in BMI and change in volumetric breast density among 24,556 women who received breast imaging at the San Francisco Mammography Registry from 2007–2013. Height and weight were self-reported at the time of mammography. Breast density was assessed using single x-ray absorptiometry (SXA) volumetric measurement. The cross-sectional and longitudinal associations between BMI and absolute dense volume (DV) and percent dense volume (PDV) were assessed using multivariable adjusted regression. Results: Women were primarily Caucasian (66%) or Asian (25%) and most were postmenopausal (64%) at time of first mammogram. In cross-sectional analysis, BMI was positively associated with DV (β = 2.95 cm3, 95% CI, 2.69–3.21) and inversely associated with PDV (β = −2.03%, 95% CI, −2.09–−1.98). In longitudinal analysis, an annual increase in BMI was associated with an annual decrease in both DV (β = −1.01 cm3/year, 95% CI, −1.59–−0.42) and PDV (β = −1.17%/year, 95% CI, −1.31–−1.04). Findings were consistent between pre- and postmenopausal women. The annual decrease in DV was strongest among premenopausal women who were initially overweight or obese (P < 0.01 for interaction by initial BMI). Conclusion: Our findings support an inverse association between change in BMI and change in PDV. Longitudinal studies of PDV and breast cancer risk, or those using PDV as an indicator of breast cancer risk, should consider adjusting for change in BMI. The association between increasing BMI and decreasing DV is unexpected and will require confirmation using volumetric methods.

Feasibility of alcohol misuse screening and treatment in the dental setting

BACKGROUND

Dental specialists treat conditions such as facial trauma and oral cancer that can result from alcohol misuse. Visits to primary dental care professionals are oriented towards prevention. Interventions coordinated by specialist services but delivered strategically in primary care could therefore potentially help to reduce burdens on secondary care services. The aim of this study was to determine the feasibility of screening for alcohol misuse and providing brief intervention in a primary dental care setting.

METHODS

In this randomised controlled trial, patients aged 18-65 years were recruited from a local general dental practice. Patients were stratified according to appointment (with a dentist or hygienist). Reception staff administered envelope packs containing screening materials (the Modified Single Alcohol Screening Question [M-SASQ]), consent forms, and a short survey collecting contact details to patients who agreed to take part in the study. Packs were randomly pre-allocated to control and intervention groups by strata using block randomisation before the start of the study. Consenting patients scoring positively on the M-SASQ for drinking hazardously and allocated to the intervention group received a motivational intervention to reduce alcohol intake from either the hygienist or dentist. Patients in the control group received usual care. The outcome assessor and patients were masked to allocations. The outcome measure at 3 months was M-SASQ score. This trial is registered with the ISRCTN registry, number ISRCTN18745862.

FINDINGS

One hygiene patient and 106 dental patients were recruited. The hygiene patient did not score positively on the M-SASQ for alcohol misuse. Of the 106 dental patients, 46 (43%) scored positively, with 26 allocated to the intervention group and 20 to the control group. Follow-up data were available for 22 (48%) of the 46 patients (12 intervention, 10 control). M-SASQ scores changed from positive to negative for two patients in the intervention and five in the control group.

INTERPRETATION

Alcohol misuse screening and treatment was feasible in a primary dental care setting; this suggests a new approach involving the general dental team, which could potentially reduce burdens on specialist dental services. Overall, in this practice, the dentist was best placed to deliver the intervention rather than the hygienist since these health-care professionals saw most of the patients recruited into the trial. Contamination might have been a problem because more patients in the control group changed M-SASQ score. Building on these findings, a multicentre, cluster randomised controlled trial is planned.

FUNDING

Royal College of Surgeons of England.

Educational interventions for preventing vascular catheter bloodstream infections in critical care: evidence map, systematic review and economic evaluation

BACKGROUND

Bloodstream infections resulting from intravascular catheters (catheter-BSI) in critical care increase patients' length of stay, morbidity and mortality, and the management of these infections and their complications has been estimated to cost the NHS annually £19.1-36.2M. Catheter-BSI are thought to be largely preventable using educational interventions, but guidance as to which types of intervention might be most clinically effective is lacking.

OBJECTIVE

To assess the effectiveness and cost-effectiveness of educational interventions for preventing catheter-BSI in critical care units in England.

DATA SOURCES

Sixteen electronic bibliographic databases - including MEDLINE, MEDLINE In-Process & Other Non-Indexed Citations, Cumulative Index to Nursing and Allied Health Literature (CINAHL), NHS Economic Evaluation Database (NHS EED), EMBASE and The Cochrane Library databases - were searched from database inception to February 2011, with searches updated in March 2012. Bibliographies of systematic reviews and related papers were screened and experts contacted to identify any additional references.

REVIEW METHODS

References were screened independently by two reviewers using a priori selection criteria. A descriptive map was created to summarise the characteristics of relevant studies. Further selection criteria developed in consultation with the project Advisory Group were used to prioritise a subset of studies relevant to NHS practice and policy for systematic review. A decision-analytic economic model was developed to investigate the cost-effectiveness of educational interventions for preventing catheter-BSI.

RESULTS

Seventy-four studies were included in the descriptive map, of which 24 were prioritised for systematic review. Studies have predominantly been conducted in the USA, using single-cohort before-and-after study designs. Diverse types of educational intervention appear effective at reducing the incidence density of catheter-BSI (risk ratios statistically significantly < 1.0), but single lectures were not effective. The economic model showed that implementing an educational intervention in critical care units in England would be cost-effective and potentially cost-saving, with incremental cost-effectiveness ratios under worst-case sensitivity analyses of < £5000/quality-adjusted life-year.

LIMITATIONS

Low-quality primary studies cannot definitively prove that the planned interventions were responsible for observed changes in catheter-BSI incidence. Poor reporting gave unclear estimates of risk of bias. Some model parameters were sourced from other locations owing to a lack of UK data.

CONCLUSIONS

Our results suggest that it would be cost-effective and may be cost-saving for the NHS to implement educational interventions in critical care units. However, more robust primary studies are needed to exclude the possible influence of secular trends on observed reductions in catheter-BSI.

STUDY REGISTRATION

The study is registered with PROSPERO as CRD42012001840.

FUNDING

The National Institute for Health Research Health Technology Assessment programme.

Abstract 971: Phosphatase PTP4A3 is critical for cell growth of triple-negative breast cancer

Background: Triple-negative breast cancer (TNBC) has the worst prognosis of all breast cancers, and frequently affects young and in particular African-American Women. Women diagnosed with these tumors currently lack targeted treatment options. To identify novel targets for TNBC treatment, we identified specific phosphatases that are critical for the growth of TNBCs.

Methods: To identify novel targets for TNBC, we investigated the expression of phosphatases in breast tumors, identified those highly expressed in TNBC, and studied whether specific phosphatases are essential for TNBC growth. siRNA were used to knock-down each of the 20 highly expressed phosphatases in 4 TNBC, 4 ER-positive BC cell lines. Cell growth was measured by cell count, and anchorage-independent growth was tested with soft agar assays. Xenograft experiments were performed by injecting TNBC cells expressing inducible shRNA-PTP4A3 into the mammary fat pad of nude mice. Mice with palpable tumors were then randomized to receive either water containing doxycycline (Dox) or vehicle. Tumor size was measured every other day, and the growth rates of tumors were calculated and compared using Student's t-test of the slopes. The prognostic importance of PTP4A3 was evaluated using gene expression and survival data. R statistical software was used to generate Kaplan-Meier curves and determine statistical significance using the log rank (Mantel-Cox) method and perform Cox proportional hazards models analyses. Patients were dichotomized at the mean expression level.

Results: Knockdown of nine phosphatases, including PTP4A3 (PRL-3) significantly reduced growth and anchorage-independent growth of TNBC cell lines. PTP4A3 siRNA treatment induced a G1/S cell cycle block in all breast cancer cell lines. Further analysis of the phosphatase PTP4A3 demonstrated that reduced expression induced apoptosis in four TNBC cell lines, without inducing apoptosis in most ER-positive BC cell lines. Inhibition of PTP4A3 in TNBC xenografts suppressed growth, and a reduction in proliferation and induction of apoptosis was detected by immunohistochemistry. In silico analysis of PTP4A3 expression confirmed elevated expression of PTP4A3 in TNBCs and demonstrated that PTP4A3 is an independent prognostic indicator for breast cancer specific survival.

Conclusion: These studies identified a set of highly expressed phosphatases that represent promising targets for the treatment of TNBCs. We also demonstrated that one of these phosphatases, PTP4A3, is critical for the growth of TNBCs in vitro and in vivo, and PTP4A3 expression is prognostic in women with TNBC. These results provide the rationale for further study of growth promoting phosphatases and suggest that such phosphatases may be targeted for the treatment of this aggressive form of breast cancer.

Research supported by: Susan G. Komen for the Cure (PB, GM), Komen SAB, and the Norman Brinker Award for Research Excellence.

Citation Format: Petra den Hollander, Anna Tismelzon, Jonathan Shepherd, Kathryn R. Rawls, Jamal L. Hill, Abhijit Mazumdar, Susan G. Hilsenbeck, Gordon B. Mills, Powel H. Brown. Phosphatase PTP4A3 is critical for cell growth of triple-negative breast cancer. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 971. doi:10.1158/1538-7445.AM2014-971

Using process data to understand outcomes in sexual health promotion: an example from a review of school-based programmes to prevent sexually transmitted infections

This article discusses how process indicators can complement outcomes as part of a comprehensive explanatory evaluation framework, using the example of skills-based behavioural interventions to prevent sexually transmitted infections and promote sexual health among young people in schools. A systematic review was conducted, yielding 12 eligible outcome evaluations, 9 of which included a process evaluation. There were few statistically significant effects in terms of changes in sexual behaviour outcomes, but statistically significant effects were more common for knowledge and self-efficacy. Synthesis of the findings of the process evaluations identified a range of factors that might explain outcomes, and these were organized into two overarching categories: the implementation of interventions, and student engagement and intervention acceptability. Factors which supported implementation and engagement and acceptability included good quality teacher training, involvement and motivation of key school stakeholders and relevance and appeal to young people. Factors which had a negative impact included teachers' failure to comprehend the theoretical basis for behaviour change, school logistical problems and omission of topics that young people considered important. It is recommended that process indicators such as these be assessed in future evaluations of school-based sexual health behavioural interventions, as part of a logic model.

Alcohol screening and brief interventions for offenders in the probation setting (SIPS Trial): a pragmatic multicentre cluster randomized controlled trial

AIM

To evaluate the effectiveness of different brief intervention strategies at reducing hazardous or harmful drinking in the probation setting. Offender managers were randomized to three interventions, each of which built on the previous one: feedback on screening outcome and a client information leaflet control group, 5 min of structured brief advice and 20 min of brief lifestyle counselling.

METHODS

A pragmatic multicentre factorial cluster randomized controlled trial. The primary outcome was self-reported hazardous or harmful drinking status measured by Alcohol Use Disorders Identification Test (AUDIT) at 6 months (negative status was a score of <8). Secondary outcomes were AUDIT status at 12 months, experience of alcohol-related problems, health utility, service utilization, readiness to change and reduction in conviction rates.

RESULTS

Follow-up rates were 68% at 6 months and 60% at 12 months. At both time points, there was no significant advantage of more intensive interventions compared with the control group in terms of AUDIT status. Those in the brief advice and brief lifestyle counselling intervention groups were statistically significantly less likely to reoffend (36 and 38%, respectively) than those in the client information leaflet group (50%) in the year following intervention.

CONCLUSION

Brief advice or brief lifestyle counselling provided no additional benefit in reducing hazardous or harmful drinking compared with feedback on screening outcome and a client information leaflet. The impact of more intensive brief intervention on reoffending warrants further research.

Identification of alcohol misuse in dental patients

It’s on the medical history form and you may feel like you’ve asked it thousands of times: ‘How many units of alcohol do you consume each week?’. But is this question effective at identifying people with alcohol problems? Our authors provide evidence that a new approach to recording alcohol consumption would lead to more and better advice being given to patients.

The effectiveness of alcohol screening and brief intervention in emergency departments: a multicentre pragmatic cluster randomized controlled trial

Background

Alcohol misuse is common in people attending emergency departments (EDs) and there is some evidence of efficacy of alcohol screening and brief interventions (SBI). This study investigated the effectiveness of SBI approaches of different intensities delivered by ED staff in nine typical EDs in England: the SIPS ED trial.

Methods and Findings

Pragmatic multicentre cluster randomized controlled trial of SBI for hazardous and harmful drinkers presenting to ED. Nine EDs were randomized to three conditions: a patient information leaflet (PIL), 5 minutes of brief advice (BA), and referral to an alcohol health worker who provided 20 minutes of brief lifestyle counseling (BLC). The primary outcome measure was the Alcohol Use Disorders Identification Test (AUDIT) status at 6 months. Of 5899 patients aged 18 or more presenting to EDs, 3737 (63·3%) were eligible to participate and 1497 (40·1%) screened positive for hazardous or harmful drinking, of whom 1204 (80·4%) gave consent to participate in the trial. Follow up rates were 72% (n = 863) at six, and 67% (n = 810) at 12 months. There was no evidence of any differences between intervention conditions for AUDIT status or any other outcome measures at months 6 or 12 in an intention to treat analysis. At month 6, compared to the PIL group, the odds ratio of being AUDIT negative for brief advice was 1·103 (95% CI 0·328 to 3·715). The odds ratio comparing BLC to PIL was 1·247 (95% CI 0·315 to 4·939). A per protocol analysis confirmed these findings.

Conclusions

SBI is difficult to implement in typical EDs. The results do not support widespread implementation of alcohol SBI in ED beyond screening followed by simple clinical feedback and alcohol information, which is likely to be easier and less expensive to implement than more complex interventions.

Trial Registration

Current Controlled Trials ISRCTN 93681536

Clinical effectiveness and cost-effectiveness of depth of anaesthesia monitoring (E-Entropy, Bispectral Index and Narcotrend): a systematic review and economic evaluation

BACKGROUND

It is important that the level of general anaesthesia (GA) is appropriate for the individual patient undergoing surgery. If anaesthesia is deeper than required to keep a patient unconscious, there might be increased risk of anaesthetic-related morbidity, such as postoperative nausea, vomiting and cognitive dysfunction. This may also prolong recovery times, potentially increasing health-care costs. If anaesthesia is too light, patients may not be fully unconscious and could be at risk of intraoperative awareness.

OBJECTIVE

The objective of this report is to assess the clinical effectiveness and cost-effectiveness of Bispectral Index (BIS), E-Entropy and Narcotrend technologies, each compared with standard clinical monitoring, to monitor the depth of anaesthesia in surgical patients undergoing GA.

DATA SOURCES

A search strategy was developed and run on a number of bibliographic electronic databases including MEDLINE, EMBASE, The Cochrane Library and the Health Technology Assessment (HTA) database. For the systematic review of patient outcomes, databases were searched from the beginning of 2009 to November 2011 for studies of BIS (and then updated in February 2012), and from 1995 to November 2011 (and then updated in February 2012) for studies of E-Entropy and Narcotrend. For the systematic review of cost-effectiveness, searches were from database inception to November 2011 (an update search was performed in February 2012).

REVIEW METHODS

The systematic review of patient outcomes followed standard methodology for evidence synthesis. A decision-analytic model was developed to assess the cost-effectiveness of depth of anaesthesia monitoring compared with standard clinical observation. A simple decision tree was developed, which accounted for patients' risk of experiencing short-term anaesthetic-related complications in addition to risk of experiencing intraoperative awareness.

RESULTS

Twenty-two randomised controlled trials comparing BIS, E-Entropy and Narcotrend with standard clinical monitoring were included in the systematic review of patient outcomes, alongside evidence from a recent Cochrane review. Six trials of patients classified with risk factors for intraoperative awareness were combined in a fixed-effect meta-analysis. The overall pooled Peto's odds ratio was 0.45 (95% confidence interval 0.25 to 0.81) in favour of BIS. However, there was statistically significant heterogeneity. The base-case cost per quality-adjusted life-year (QALY) for BIS compared with standard clinical monitoring ranged from £22,339 to £44,198 depending on patient subgroups (type of GA received; level of risk for awareness). For E-Entropy, base-case estimates ranged from £14,421 to £31,430. For Narcotrend, estimates varied from a cost per QALY of £8033 to Narcotrend dominating standard clinical monitoring.

LIMITATIONS

The analysis was limited by lack of clinical effectiveness data, particularly for E-Entropy and Narcotrend.

CONCLUSIONS

The available evidence on the impact of the technologies on reducing the likelihood of intraoperative awareness is limited. However, there were reductions in general anaesthetic consumption and anaesthetic recovery times. The cost-effectiveness of depth of anaesthesia monitoring appears to be highly dependent on a number of factors, including probability of awareness.

STUDY REGISTRATION

PROSPERO registration number CRD42011001834.

FUNDING

The National Institute for Health Research Health Technology Assessment programme.

Trends in community violence in England and Wales 2005-2009

PURPOSE

Injury records from Emergency Departments (EDs) have been studied over the last decade as part of the work of the National Violence Surveillance Network (NVSN) and provide information about local, regional and national violence levels and trends in England and Wales. The purpose of the current study is to evaluate overall, gender, age-specific and regional trends in community violence in England and Wales from an ED perspective from January 2005 to December 2009.

METHODS

Violence-related injury data were collected prospectively in a stratified sample of 77 EDs (Types 1, 3 and 4) in the nine Government Office Regions in England and in Wales. All 77 EDs were recruited on the basis that they had implemented and continued to comply with the provisions of the 1998 Data Protection Act and Caldicott guidance. Attendance date, age and gender of patients who reported injury in violence were identified using assault-related attendance codes, specified at the local level. Time series statistical methods were used to detect both regional and national trends.

RESULTS

In total 221,673 (163,384 males: 74%) violence-related attendances were identified. Overall estimated annual injury rate was 6.5 per 1000 resident population (males 9.8 and females 3.4 per 1000). Violence affecting males and females decreased significantly in England and Wales over the 5-year period, with an overall estimated annual decrease of 3% (95% CI: 1.8-4.1%, p<0.05). Attendances decreased significantly for both genders across four out of the five age groups studied. Attendances were found to be highest during the months of May and July and lowest in February. Substantial differences in violence-related ED attendances were identified at the regional level.

CONCLUSIONS

From this ED perspective overall violence in England and Wales decreased over the period 2005-2009 but increased in East Midlands, London and South West regions. Since 2006, overall trends according to Crime Survey for England and Wales (CSEW), police and ED measures were similar, though CSEW and ED measures reflect far greater numbers of violent incidents than police data. Causes of decreases in violence in regions need to be identified and shared with regions where violence increased.

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

Background

Alcohol-related violence in and in the vicinity of licensed premises continues to place a considerable burden on the United Kingdom’s (UK) health services. Robust interventions targeted at licensed premises are therefore required to reduce the costs of alcohol-related harm. Previous evaluations of interventions in licensed premises have a number of methodological limitations and none have been conducted in the UK. The aim of the trial was to determine the effectiveness of the Safety Management in Licensed Environments intervention designed to reduce alcohol-related violence in licensed premises, delivered by Environmental Health Officers, under their statutory authority to intervene in cases of violence in the workplace.

Methods/Design

A national randomised controlled trial, with licensed premises as the unit of allocation. Premises were identified from all 22 Local Authorities in Wales. Eligible premises were those with identifiable violent incidents on premises, using police recorded violence data. Premises were allocated to intervention or control by optimally balancing by Environmental Health Officer capacity in each Local Authority, number of violent incidents in the 12 months leading up to the start of the project and opening hours. The primary outcome measure is the difference in frequency of violence between intervention and control premises over a 12 month follow-up period, based on a recurrent event model. The trial incorporates an embedded process evaluation to assess intervention implementation, fidelity, reach and reception, and to interpret outcome effects, as well as investigate its economic impact.

Discussion

The results of the trial will be applicable to all statutory authorities directly involved with managing violence in the night time economy and will provide the first formal test of Health and Safety policy in this environment. If successful, opportunities for replication and generalisation will be considered.

Trial registration

UKCRN 14077; ISRCTN78924818.

The minimum important difference for the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form in women with stress urinary incontinence

INTRODUCTION

Minimum important difference (MID) estimates the minimum degree of change in an instrument's score that correlates with a patient's subjective sense of improvement. We aimed to determine the MID for the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF) using both anchor based and distribution based methods derived using data from the Trial of Midurethral Slings (TOMUS).

MATERIALS AND METHODS

Instruments for the anchor-based analyses included the urogenital distress inventory (UDI), incontinence impact questionnaire (IIQ), patient global impression of improvement (PGI-I), incontinence episodes (IE) on 7-day bladder diary, and satisfaction with surgical results. After confirming moderate correlation (r ≥ 0.3) of ICIQ-UI SF and each anchor, MIDs were determined by calculating the difference between the mean instrument scores for individuals with the smallest amount of improvement and with no change. The distribution-based method of MID assessment was applied using effect sizes of 0.2 and 0.5 SD (small to medium effects). Triangulation was used to examine these multiple MID values in order to converge on a small range of values.

RESULTS

Anchor-based MIDs range from -4.5 to -5.7 at 12 months and from -3.1 to 4.3 at 24 months. Distribution-based MID values were lower. Triangulation analysis supports a MID of -5 at 12 months and -4 at 24 months.

CONCLUSION

The recommended MIDs for ICIQ-UI SF are -5 at 12 months and -4 at 24 months. In surgical patients, ICIQ-UI SF score changes that meet these thresholds can be considered clinically meaningful.

Are trainee teachers being adequately prepared to promote the health and well-being of school children? A survey of current practice

BACKGROUND

Teachers are a key part of the wider public health workforce in England. We conducted a survey to find out how they are trained for this role during their initial teacher education (ITE).

METHODS

Between 2011 and 2012, we sent an online questionnaire to 220 ITE course managers and conducted semi-structured interviews with a purposive sample of 19 course managers to explore issues in more depth.

RESULTS

The response rate to the questionnaire was 34% (n = 74). Although most of the course managers felt inclusion of health and well-being training in ITE was important, provision across courses was variable. Topics which are public health priorities [e.g. sex and relationships education (SRE) and drugs, alcohol and tobacco] were covered by fewer courses than other topics (e.g. child protection, emotional health and anti-bullying). Perceived barriers to training included lack of time and a belief that health and well-being were low priorities in educational policy.

CONCLUSIONS

Not all of tomorrow's teachers are being adequately prepared for their role in helping to address public health priorities. Educational policy does not appear to be supporting the priorities of public health policy, and this is a key barrier to health promotion training in ITE. Keywords children, educational settings, health promotion.

Are educational interventions to prevent catheter-related bloodstream infections in intensive care unit cost-effective?

BACKGROUND

There is increasing interest in evidence-based educational interventions in central venous catheter care. It is unclear how effective these are at reducing the risk of bloodstream infections from the use of intravascular catheters (catheter-BSIs) and the associated costs and health benefits.

AIM

To estimate the additional costs and health benefits from introducing such interventions and the costs associated with catheter-BSIs.

METHODS

A comprehensive epidemiological and economic review was performed to develop the parameters for an economic model to assess the cost-effectiveness of introducing an educational intervention compared with clinical practice without the intervention. The model follows the clinical pathway of cohorts of patients from their admission to an intensive care unit (ICU), where some may acquire catheter-BSI, and estimates the associated costs, mortality and life expectancy.

FINDINGS

The additional cost per catheter-BSI episode was £3940. The results of this model demonstrate that introducing an additional educational intervention to prevent catheter-BSI improved patient life expectancy and reduced overall costs.

CONCLUSION

Introducing evidence-based education is likely to reduce the incidence of catheter-BSI and the model results suggest that the cost of introducing the interventions will be outweighed by savings related to reduced ICU bed occupancy costs.

An economic evaluation of anonymised information sharing in a partnership between health services, police and local government for preventing violence-related injury

OBJECTIVE

To assess the costs and benefits of a partnership between health services, police and local government shown to reduce violence-related injury.

METHODS

Benefit-cost analysis.

RESULTS

Anonymised information sharing and use led to a reduction in wounding recorded by the police that reduced the economic and social costs of violence by £6.9 million in 2007 compared with the costs the intervention city, Cardiff UK, would have experienced in the absence of the programme. This includes a gross cost reduction of £1.25 million to the health service and £1.62 million to the criminal justice system in 2007. By contrast, the costs associated with the programme were modest: setup costs of software modifications and prevention strategies were £107 769, while the annual operating costs of the system were estimated as £210 433 (2003 UK pound). The cumulative social benefit-cost ratio of the programme from 2003 to 2007 was £82 in benefits for each pound spent on the programme, including a benefit-cost ratio of 14.80 for the health service and 19.1 for the criminal justice system. Each of these benefit-cost ratios is above 1 across a wide range of sensitivity analyses.

CONCLUSIONS

An effective information-sharing partnership between health services, police and local government in Cardiff, UK, led to substantial cost savings for the health service and the criminal justice system compared with 14 other cities in England and Wales designated as similar by the UK government where this intervention was not implemented.

Repeat post-op voiding trials: an inconvenient correlate with success

AIMS

This study examined the association between the need for a repeat voiding trial after midurethral sling (MUS) surgery and 1-year success rates.

METHODS

We conducted this secondary analysis of the participants in the Urinary Incontinence Treatment Network trial of midurethral sling (TOMUS) study which compared retropubic versus transobturator MUS. A standard voiding trial was attempted on all subjects. The "repeat voiding trial" group included subjects discharged with catheterization. All others were considered "self voiding." Success rates between the groups at 1-year were compared, followed by multivariate analyses controlling for previously reported clinical predictors of success.

RESULTS

Most women (76%) were self-voiding, while 24% required a repeat voiding trial. The objective success rate at 1-year was 85.8% in the repeat voiding trial group and 75.3% in the self-voiding group (P = 0.01). Subjective success rate at 1-year was 61.0% in the repeat voiding trial group and 55.1% in the self-voiding group (P = 0.23). Women in the repeat voiding trial group continued to demonstrate greater objective success than the self-voiding group in multivariate analysis that controlled for previous incontinence surgery, pad weight, urethral mobility, urge score, and type of MUS (P = 0.04, OR 1.82, 95% CI 1.03-3.22).

CONCLUSIONS

Women who require a repeat voiding trial following MUS surgery have greater objective success at 1-year postoperatively when compared to those who are self-voiding at the time of discharge. These results may help reassure women who require catheterization after MUS surgery that their outcome is not compromised by this immediate transient post-operative result.