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Violence Prevention The Evidence Karen Hughes Centre for Public Health, Liverpool John Moores University WHO Collaborating Centre for Violence Prevention.

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Presentation on theme: "Violence Prevention The Evidence Karen Hughes Centre for Public Health, Liverpool John Moores University WHO Collaborating Centre for Violence Prevention."— Presentation transcript:

1 Violence Prevention The Evidence Karen Hughes Centre for Public Health, Liverpool John Moores University WHO Collaborating Centre for Violence Prevention

2 Introduction 1.6 million people die each year through violence Estimated economic cost of $151 billion Millions more affected as victims and witnesses Physical and mental health Education and employment Relationships and social functioning Cycles of violence Preventing violence major priority Public health approach Intelligence-led multi-agency evidence-based What works to prevent violence

3 Updating the Evidence Lots of new research since 2002 Need to re-review the evidence Series of briefings based on 7 scientifically viable strategies Provide overview of evidence for their effectiveness Easily accessible to non-specialists Neither under- nor over-stating the case Encourage implementation of these interventions Identify main gaps in the current evidence base

4 The Series Academic & grey literature Database searches e.g. Medline Systematic reviews Internet searches Balance between high quality evidence and geographical coverage Peer review process


6 Developing safe, stable & nurturing relationships between children & their parents & caregivers Children at greater risk of being abused when: Parents have little understanding of child development, are less affectionate and responsive, use harsh or inconsistent punishment.. Early relationships are central to a childs development Affect brain development Affect social, emotional and intellectual development Lack of safe, stable and nurturing relationships in childhood can have long-lasting effects: Anxiety, low self-esteem, difficulty forming relationships Increased risks of violence

7 Childhood Violence and Adult Health Felitti et al, 1998; Anda et al, 2006 Anxiety x 2.4 Severe obesity x 1.9 Alcoholism x 7.2 Illicit drug use x 4.5 Sexually transmitted infections x 2.5 Current smoker x 1.8 Perpetrating partner violence x 8.8 Any cancer x 1.9 Increased risk of health behaviours and conditions as adults for individuals experiencing four or more Adverse Childhood Experiences in childhood. Abuse (Physical, sexual, emotional) Neglect (Physical, emotional) Household Dysfunction (mother treated violently, substance abuse, mental illness, parental separation / divorce, incarcerated household member

8 Parenting programmes Information & support for parents Parent & child programmes Preschool education, family support, child/health services etc. Social support groups e.g. peer support for parents Media interventions e.g. raise awareness & knowledge of child maltreatment Safe, stable & nurturing relationships Early, primary prevention to teach parenting skills and support healthy child development Some strong evidence that parenting programmes and parent and child programmes can reduce child maltreatment and problem/aggressive behaviours in youth

9 Nurse-Family Partnership, USA Targets low-income first time mothers Pre and post natal nurse home visits (early in pregnancy to age 2) Develop better parenting and emotional bonding Promote and teach: o Health behaviours (mother/child) o Child care skills o Maternal personal development Long term evaluation – 15 years Lower levels of child abuse/neglect by mothers Children born to participating mothers: Fewer behavioural problems Fewer arrests/convictions Fewer injuries Fewer sexual partners Lower frequency of alcohol consumption Most effective for deprived women Olds et al, 1996,1998, 2005


11 Developing life skills in children & adolescents Interventions to develop life skills can: Improve social and emotional competence Improve school participation & performance Increase prospects for employment Addressing risk factors for violence: Poor social competence Low academic achievement and truancy Abilities for adaptive and positive behaviour that enable individuals to deal effectively with the demands and challenges of everyday life Self-awareness (e.g. self-esteem) Self-management (e.g. coping skills) Social awareness (e.g. empathy) Relationships (e.g. conflict management) Decision making (e.g. critical thinking) World Health Organization

12 Preschool enrichment Child skills, parent programmes Social development training Empathy, relationships, conflict resolution, anger management.. Academic enrichment Study & recreation out of school Vocational Training Providing skills to find work Developing life skills in children & adolescents Provide cognitive, emotional, interpersonal & social skills to enable youth to deal with the challenges of life Some strong evidence that preschool enrichment and social development programmes can reduce aggression and improve social skills, particularly in at-risk youth Cost effectiveness Early childhood education (3-4 year olds) Average benefit - $2.35 for every dollar invested

13 Preschool Enrichment Preparing children for school Social, emotional and educational skills Chicago Child-Parent Center, USA Children aged 3-9 in deprived areas Preschool enrichment ongoing support in formal education Intensive parent programme By age 20, participants showed (cf controls) : Fewer arrests (including for violent offences; 9% v 15%) Greater higher school completion (50% v 38.5%) Age 24 - lower depressive symptoms, higher employment Also associated with lower rates of child maltreatment Reynolds et al, 2001, 2003, 2004

14 Social Development Programmes Emotional & social skills Self-control Positive self-esteem Relationship skills Problem solving skills Promoting Alternative Thinking Strategies (PATHS) 131 lessons over 5 years; teacher training Regular school children peer-rated aggression, hyperactivity, emotional competence Children with behaviour and learning problems conduct problems, depression, anxiety, problem solving Successful school programmes high quality, longer intervention, at-risk groups, positive skills Greenburg et al, 1997; CPPRG 1997; CSVP Blueprints, 1998; Curtis and Norgate, 2007 Bigfoot Arts Education Ltd


16 Reducing availability & harmful use of alcohol Strong links between alcohol and violence Affects physical and cognitive function Beliefs that alcohol causes aggression Used to prepare for/excuse violent acts Dependence - failure to fulfil care duties Prenatal exposure - foetal development Drinking a coping mechanism in victims Common risk factors 30% violent deaths related to alcohol 8% in Middle East and North Africa 56% in Europe and Central Asia Reduce violence and other alcohol-related harm

17 Reducing availability & harmful use of alcohol Evidence promising, suggesting that alcohol-focused measures can reduce violence. However, many barriers and few available studies Regulating alcohol availability sales times, outlet density Raising alcohol prices e.g taxation, minimum price Reducing alcohol use in risky drinkers e.g. brief interventions, treatment for alcohol dependence ; Improving drinking environments Community partnerships, responsible retailing, strict enforcement, physical design… England, economic modelling minimum price of 50p/alcohol unit estimated would save: 2.1% of all violence 10,300 incidents a year Meier et al, 2008 Australia (VIC), spatial analysis Increasing accelerating effect for density of pub licences on violence Dramatic increase in liquor licenses Currently capped Livingston, 2008

18 Targeting alcohol sales in Brazil Diadema, Brazil 60% of murders and 45% complaints of violence against women between 23:00 and 06:00 Many linked to alcohol 2002: municipal law banned alcohol sales after 23:00 Public and alcohol retailer information campaign Strict enforcement of law by multi-agency team Closing time regulation Rate of assaults against women Closing time regulation Homicide rate 44% reduction over 3 years Average 9 per month Dualibi S et al., The effect of restricting opening hours on alcohol-related violence. Am J Public Health. 2007


20 Reducing access to lethal means Lethality of violence can depend on means used Three lethal means account for a significant proportion of homicide and suicide Guns 360,000 firearm homicides in non-conflict situations each year A further 52,000 deaths directly through armed conflict Knives Around 40% of homicides in the European Region are due to knives and sharp implements Pesticides Pesticide ingestion accounts for 370,000 suicides each year - over a third of all suicides

21 Reducing access to lethal means Some evidence of success, mainly for firearms legislation. Elsewhere evidence base poorly developed. More research needed, particularly in developing countries Legislative measures E.g. bans and licensing schemes Increased enforcement E.g. test purchasing, stop and search Weapons amnesties Safer storage E.g. provision of pesticide storage facilities Removing the means to lethal violence

22 Gun law reforms in Austria, 1997 minimum firearm purchase age of 21 valid reason to purchase a firearm background checks/psychological testing three day waiting period between firearm licensing and purchasing; safe firearm storage regulations Preventing Access to Lethal Means Kapusta et al, 2007; Beautrais et al, 2006 Associated with: Reduced license demand Reduced gun homicides Reduced suicides not substituted with increases in suicides using other means New Zealand Reductions in firearm suicides following legislative changes particularly seen in under 25s

23 Direct approaches Measures to reduce access to firearms Firearm injury prevention programmes Criminal justice interventions Community based programmes Indirect approaches Parenting programmes Life skills programmes Alcohol-targeted measures Environmental and urban design Disrupting illegal drug markets Programmes to reduce inequalities Preventing and reducing armed violence



26 Promoting gender equality to prevent violence against women Relationships between gender and violence are complex Different roles and behaviours of males and females are shaped and reinforced by gender norms in society Differences in these roles and behaviours can create gender inequalities which can: Increase the risk of violence by men against women Hinder victims ability to remove themselves from violence and seek support Challenging ideas that one sex has more power and control over another; a reason for violence against women

27 Promoting gender equality to prevent violence against women Good evidence for school-based programmes. Some evidence for community-based interventions, although further research is needed School-based interventions Addressing gender norms and attitudes, e.g. safer dating Community interventions Microfinance programmes, combined with gender equity training Life skills programmes educate about gender-based violence and develop relationship skills

28 Intervention with Microfinance for AIDS and Gender Equity improve womens employment opportunities increase influence in household decision making increase ability to resolve marital conflicts strengthen social networks reduce HIV transmission Women in poorest rural households Financial services Training & skill building Community participation to engage males Two years after programme 55% fewer acts of intimate partner violence Less controlling behaviour by partners Better household communication IMAGE: Microfinance in South Africa Pronyk et al 2006; Kim and Watts 2007


30 Changing cultural and social norms that support violence Cultural and social norms strongly influence individual behaviour Cultural acceptance of violence is a risk factor for many violence types Social tolerance of violence likely learned in childhood, e.g. Use of corporal punishment Witnessing violence in the family Violence in the media Interventions challenge rules or behaviour expectations that tolerate violent behaviour Child maltreatment Physical punishment is a normal part of rearing a child Intimate partner violence A man has a right to discipline female behaviour Sexual violence Sexual activity (inc. rape) is a marker of masculinity Youth violence Violence is an acceptable way of resolving conflict Suicide and self-harm Mental health problems are embarrassing and shameful

31 Changing cultural and social norms that support violence Limited evidence for most types of interventions in this area. Further rigorous evaluations are needed. Mass media campaigns Providing messages on health behaviour to a wide audience edutainment Social norms / marketing Targeting specific groups Correcting misperceptions of cultural norms Laws and policies Implementing laws that make violent behaviour an offence.

32 Soul City Social and behavioural change Edutainment: Soap opera, radio, information booklets Address social issues o Violence against women o Alcohol and violence Intimate partner violence (IPV) After 8 months: Less acceptance of IPV Increase in belief that communities can help prevent IPV No measurement of violent behaviour Changing social norms in South Africa Usdin et al, 2005


34 Victim identification, care and support programmes Violence often hidden: Child and elder abuse Intimate partner violence A women will be assaulted an average of 35 times before reporting to police Witness and community intimidation Violence can lead to: Lifelong physical & mental health problems Social and occupational impairment Increased risk of further violence Identifying and supporting victims critical in breaking cycles of violence and limiting long term impacts

35 Victim identification, care and support programmes Good evidence for the use of advocacy support programmes. Promising evidence for screening and referral, psychosocial interventions and protection orders Screening and referral Identifying and supporting victims of violence Advocacy support Support and guidance to victims, e.g. counselling, education, legal aid. Psychosocial interventions Treat emotional & behavioural problems linked to victimisation. Protection orders Prohibit perpetrators from further abusing their victims

36 Supporting abused pregnant women in China Based on US programme (Parker et al, 1999) Empowerment training – enhance womens independence and control Reduced violence in pregnant abused women Hong Kong Pregnant women attending first antenatal appointment Screened for physical, sexual and emotional intimate partner abuse Assigned to intervention or control (standard care) Intervention One-to-one session (30 mins) Advise on safety, decision making and problem solving Additional component on empathic understanding Cultural modifications (e.g. shame of disclosure outside family) After intervention: Less psychological and minor physical violence (but not less sexual or severe physical violence) Also lower post natal depression Control: information card Tiwari et al, 2005

37 State of the Evidence Brief overview of the series Wide range of interventions can prevent violence Individual, relationship, community and societal levels Throughout the life course Wide range of agencies involved in their delivery Quality of the evidence varies widely Strongest evidence for early life, primary prevention Randomised controlled trials Long term follow up Cost effectiveness Promising evidence elsewhere, need greater research Outcome evaluations Geographical spread of evidence is poor Need for research in low- and middle-income countries

38 Gaps in the Evidence

39 One of 11 reviews on injury and violence prevention UK Focal Point for VIP Gaps in the Evidence

40 Summary Enhance investment in research on violence and violence prevention – especially in low- and middle-income countries – expanding the number of outcome evaluation studies Increase the flow to low- and middle- income countries of financial resources and technical support for violence prevention The need to expand the evidence base in no way precludes taking action now and implementing interventions Intensify and expand violence prevention awareness among decision makers

41 Thank You And special thanks to: Mark A Bellis Sara Wood Chris Mikton Alex Butchart Zara Quigg

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