Christopher Mikton

Prevalence and risk of violence against children with disabilities: a systematic review and meta-analysis of observational studies

BACKGROUND Globally, at least 93 million children have moderate or severe disability. Children with disabilities are thought to have a substantially greater risk of being victims of violence than are their non-disabled peers. Establishment of reliable estimates of the scale of the problem is an essential first step in the development of effective prevention programmes. We therefore undertook a systematic review and meta-analysis to synthesise evidence for the prevalence and risk of violence against children with disabilities. METHODS For this systematic review and meta-analysis, we searched 12 electronic databases to identify cross-sectional, case-control, or cohort studies reported between Jan 1, 1990, and Aug 17, 2010, with estimates of prevalence of violence against children (aged ≤18 years) with disabilities or their risk of being victims of violence compared with children without disabilities. FINDINGS 17 studies were selected from 10,663 references. Reports of 16 studies provided data suitable for meta-analysis of prevalence and 11 for risk. Pooled prevalence estimates were 26·7% (95% CI 13·8-42·1) for combined violence measures, 20·4% (13·4-28·5) for physical violence, and 13·7% (9·2-18·9) for sexual violence. Odds ratios for pooled risk estimates were 3·68 (2·56-5·29) for combined violence measures, 3·56 (2·80-4·52) for physical violence, and 2·88 (2·24-3·69) for sexual violence. Huge heterogeneity was identified across most estimates (I(2)>75%). Variations were not consistently explained with meta-regression analysis of the characteristics of the studies. INTERPRETATION The results of this systematic review confirm that children with disabilities are more likely to be victims of violence than are their peers who are not disabled. However, the continued scarcity of robust evidence, due to a lack of well designed research studies, poor standards of measurement of disability and violence, and insufficient assessment of whether violence precedes the development of disability, leaves gaps in knowledge that need to be addressed. FUNDING WHO Department of Violence and Injury Prevention and Disability.

Child maltreatment prevention: a systematic review of reviews

OBJECTIVE To synthesize recent evidence from systematic and comprehensive reviews on the effectiveness of universal and selective child maltreatment prevention interventions, evaluate the methodological quality of the reviews and outcome evaluation studies they are based on, and map the geographical distribution of the evidence. METHODS A systematic review of reviews was conducted. The quality of the systematic reviews was evaluated with a tool for the assessment of multiple systematic reviews (AMSTAR), and the quality of the outcome evaluations was assessed using indicators of internal validity and of the construct validity of outcome measures. FINDINGS The review focused on seven main types of interventions: home visiting, parent education, child sex abuse prevention, abusive head trauma prevention, multi-component interventions, media-based interventions, and support and mutual aid groups. Four of the seven - home-visiting, parent education, abusive head trauma prevention and multi-component interventions - show promise in preventing actual child maltreatment. Three of them - home visiting, parent education and child sexual abuse prevention - appear effective in reducing risk factors for child maltreatment, although these conclusions are tentative due to the methodological shortcomings of the reviews and outcome evaluation studies they draw on. An analysis of the geographical distribution of the evidence shows that outcome evaluations of child maltreatment prevention interventions are exceedingly rare in low- and middle-income countries and make up only 0.6% of the total evidence base. CONCLUSION Evidence for the effectiveness of four of the seven main types of interventions for preventing child maltreatment is promising, although it is weakened by methodological problems and paucity of outcome evaluations from low- and middle-income countries.

Preventing intimate partner and sexual violence against women: taking action and generating evidence

Intimate partner and sexual violence affect a large proportion of the population. The majority of those directly experiencing such violence are women, and the majority perpetrating it are men. The WHO Multi-Country Study on Womens Health and Domestic Violence against Women,1 for instance, indicated that 15-71% of women experience physical and/or sexual violence by an intimate partner at some point in their lives. The majority of those directly experiencing such violence are women, and the majority perpetrating it are men. The harm these forms of violence cause can last a lifetime and span generations. They have serious adverse effects on health, education, employment and the wider economy. The health outcomes due to intimate partner and sexual violence are comparable to (and in some cases exceed) those associated with many other better-known health risk factors. For example, a study in Victoria, Australia, estimated that among women 18–44 years of age, intimate partner violence was associated with 7% of the overall burden of disease and was a larger risk factor than raised blood pressure, tobacco use and increased body weight.2 Intimate partner violence also very often has severe negative impacts on the emotional and social well-being of entire families, affecting parenting skills …

Elder abuse prevalence in community settings: a systematic review and meta-analysis

BACKGROUND Elder abuse is recognised worldwide as a serious problem, yet quantitative syntheses of prevalence studies are rare. We aimed to quantify and understand prevalence variation at the global and regional levels. METHODS For this systematic review and meta-analysis, we searched 14 databases, including PubMed, PsycINFO, CINAHL, EMBASE, and MEDLINE, using a comprehensive search strategy to identify elder abuse prevalence studies in the community published from inception to June 26, 2015. Studies reporting estimates of past-year abuse prevalence in adults aged 60 years or older were included in the analyses. Subgroup analysis and meta-regression were used to explore heterogeneity, with study quality assessed with the risk of bias tool. The study protocol has been registered with PROSPERO, number CRD42015029197. FINDINGS Of the 38 544 studies initially identified, 52 were eligible for inclusion. These studies were geographically diverse (28 countries). The pooled prevalence rate for overall elder abuse was 15·7% (95% CI 12·8-19·3). The pooled prevalence estimate was 11·6% (8·1-16·3) for psychological abuse, 6·8% (5·0-9·2) for financial abuse, 4·2% (2·1-8·1) for neglect, 2·6% (1·6-4·4) for physical abuse, and 0·9% (0·6-1·4) for sexual abuse. Meta-analysis of studies that included overall abuse revealed heterogeneity. Significant associations were found between overall prevalence estimates and sample size, income classification, and method of data collection, but not with gender. INTERPRETATION Although robust prevalence studies are sparse in low-income and middle-income countries, elder abuse seems to affect one in six older adults worldwide, which is roughly 141 million people. Nonetheless, elder abuse is a neglected global public health priority, especially compared with other types of violence. FUNDING Social Sciences and Humanities Research Council of Canada and the WHO Department of Ageing and Life Course.

The effect of multiple adverse childhood experiences on health: a systematic review and meta-analysis

BACKGROUND A growing body of research identifies the harmful effects that adverse childhood experiences (ACEs; occurring during childhood or adolescence; eg, child maltreatment or exposure to domestic violence) have on health throughout life. Studies have quantified such effects for individual ACEs. However, ACEs frequently co-occur and no synthesis of findings from studies measuring the effect of multiple ACE types has been done. METHODS In this systematic review and meta-analysis, we searched five electronic databases for cross-sectional, case-control, or cohort studies published up to May 6, 2016, reporting risks of health outcomes, consisting of substance use, sexual health, mental health, weight and physical exercise, violence, and physical health status and conditions, associated with multiple ACEs. We selected articles that presented risk estimates for individuals with at least four ACEs compared with those with none for outcomes with sufficient data for meta-analysis (at least four populations). Included studies also focused on adults aged at least 18 years with a sample size of at least 100. We excluded studies based on high-risk or clinical populations. We extracted data from published reports. We calculated pooled odds ratios (ORs) using a random-effects model. FINDINGS Of 11 621 references identified by the search, 37 included studies provided risk estimates for 23 outcomes, with a total of 253 719 participants. Individuals with at least four ACEs were at increased risk of all health outcomes compared with individuals with no ACEs. Associations were weak or modest for physical inactivity, overweight or obesity, and diabetes (ORs of less than two); moderate for smoking, heavy alcohol use, poor self-rated health, cancer, heart disease, and respiratory disease (ORs of two to three), strong for sexual risk taking, mental ill health, and problematic alcohol use (ORs of more than three to six), and strongest for problematic drug use and interpersonal and self-directed violence (ORs of more than seven). We identified considerable heterogeneity (I2 of >75%) between estimates for almost half of the outcomes. INTERPRETATION To have multiple ACEs is a major risk factor for many health conditions. The outcomes most strongly associated with multiple ACEs represent ACE risks for the next generation (eg, violence, mental illness, and substance use). To sustain improvements in public health requires a shift in focus to include prevention of ACEs, resilience building, and ACE-informed service provision. The Sustainable Development Goals provide a global platform to reduce ACEs and their life-course effect on health. FUNDING Public Health Wales.

A Systematic Review of the Effectiveness of Interventions to Prevent and Respond to Violence Against Persons With Disabilities

Persons with disabilities make up some 15% of the world’s population and are at higher risk of violence. Yet there is currently no systematic review of the effectiveness of interventions to prevent violence against them. Thus the aim of this review was to systematically search for, appraise the quality of, and synthesize the evidence for the effectiveness of interventions to prevent and mitigate the consequences of all the main forms of interpersonal violence against people with all types of disabilities. The method used consisted of searches of eleven electronic databases, hand searches of three journals, scanning of reference lists of review articles, contact with experts, appraisal of risk of bias using the Quality Assessment Tool for Quantitative Studies, and narrative synthesis of results. This resulted in 736 titles being identified, 10 of which met the inclusion criteria and 6 and 2 addressed people with intellectual disabilities and developmental disabilities, respectively. Only one was from a low- and middle-income country. All studies received a weak rating on the quality assessment tool and none could be considered effective after taking risk of bias into account. In sum, the current evidence base offers little guidance to policy makers, program commissioners, and persons with disabilities for selecting interventions. More and higher quality research is required, particularly from low- and middle-income countries and on other forms of disability such as physical impairments, sensory impairments, and mental health conditions.

Preventing violence and reducing its impact: how development agencies can help

Violence has long been considered a criminal justice and human rights issue. More recently it has also been viewed as a public health problem. But violence has rarely been regarded as a development issue. Yet, in many low and middle income countries, the health consequences and costs of violence seriously hinder economic and social development. In addition to its obvious physical consequences, such as injury and death, recent studies show that the health, psychological, social, and occupational consequences of violence reach much further than previously suspected.1 2 The health and criminal justice costs of reacting to violence divert billions of dollars from more constructive societal spending. Research is also beginning to show that the much larger indirect economic costs of violence due to lost productivity and lost opportunity impede development, exacerbate socioeconomic inequality, and erode human and social capital.3 Moreover, pervasive violence and deprivation often fuel each other, forming a vicious circle …

Explaining lower rates of sexual abuse in China

Accumulating research suggests that rates of child sexual abuse are comparatively low in China. This commentary is an effort to evaluate whether it reflects a true lower prevalence or alternatively the effect of inhibited disclosure by victims. We conclude that while some estimates have almost certainly been affected by inhibited disclosure, the overall magnitude of the contrast between Chinese and international rates, particularly for girls, and its consistency with other indicators do suggest a true lower prevalence, although the evidence is equivocal. We discuss some factors that could account for such lower rates including Confucian family values, definitions of masculinity and a collectivist culture that may be protective.

Development of a parenting support program to prevent abuse of adolescents in South Africa: findings from a pilot pre-post study

Purpose: Violence against children increases in adolescence, but there is a research and practice gap in research-supported child abuse prevention for the adolescent years. A pilot program for low-resource settings was developed in collaboration with nongovernmental organizations, government, and academics in South Africa, using research-supported principles. Method: This study used a pre-post design to test initial effects of a 10-session parenting program with 60 participants (30 caregiver–adolescent dyads) in high-poverty rural South Africa. Areas requiring further testing and adaptation were also identified. Results: Pre-post findings show medium to large program effects in reducing child abuse and adolescent problem behavior, as well as large effects in improvements of positive parenting, and perceived parent and adolescent social support. Discussion: There is potential to reduce child abuse, improve parenting, and reduce adolescent problem behavior in rural South Africa through parenting programs. Further development, testing and longer term follow-up are required to ascertain potential for scale-up.

The assessment of the readiness of five countries to implement child maltreatment prevention programs on a large scale

This study aimed to systematically assess the readiness of five countries - Brazil, the Former Yugoslav Republic of Macedonia, Malaysia, Saudi Arabia, and South Africa - to implement evidence-based child maltreatment prevention programs on a large scale. To this end, it applied a recently developed method called Readiness Assessment for the Prevention of Child Maltreatment based on two parallel 100-item instruments. The first measures the knowledge, attitudes, and beliefs concerning child maltreatment prevention of key informants; the second, completed by child maltreatment prevention experts using all available data in the country, produces a more objective assessment readiness. The instruments cover all of the main aspects of readiness including, for instance, availability of scientific data on the problem, legislation and policies, will to address the problem, and material resources. Key informant scores ranged from 31.2 (Brazil) to 45.8/100 (the Former Yugoslav Republic of Macedonia) and expert scores, from 35.2 (Brazil) to 56/100 (Malaysia). Major gaps identified in almost all countries included a lack of professionals with the skills, knowledge, and expertise to implement evidence-based child maltreatment programs and of institutions to train them; inadequate funding, infrastructure, and equipment; extreme rarity of outcome evaluations of prevention programs; and lack of national prevalence surveys of child maltreatment. In sum, the five countries are in a low to moderate state of readiness to implement evidence-based child maltreatment prevention programs on a large scale. Such an assessment of readiness - the first of its kind - allows gaps to be identified and then addressed to increase the likelihood of program success.