Nonfatal Emergency Department Visits Associated with Fall-Related Fractured Skulls of Infants Aged 0-4 Months.

BACKGROUND: Children aged 0-4 years have the highest rate of emergency department (ED) visits for traumatic brain injury (TBI); falls are the leading cause. Infants younger than 2 years are more likely to sustain a fractured skull after a fall. OBJECTIVE: This study examined caregiver actions and products associated with ED visits for fall-related fractured skulls in infants aged 0-4 months. METHODS: Data were analyzed from the 2001-2017 National Electronic Injury Surveillance System-All Injury Program. Case narratives of infants aged 0-4 months who visited an ED for a fall-related skull fracture were examined to code caregiver actions preceding the fall. Product codes determined fall location and product type involved (e.g., flooring, bed, or stairs). All national estimates were weighted. RESULTS: There were more than 27,000 ED visits (weighted estimate) of infants aged 0-4 months for a nonfatal fall-related fractured skull between 2001 and 2017. Most were younger than 2 months (46.7%) and male (54.4%). Falls occurred primarily in the home (69.9%) and required hospitalization (76.4%). Primary caregiver actions coded involved placing (58.6%), dropping (22.7%), and carrying an infant (16.6%). Floor surfaces were the most common product (mentioned in 24.0% of the cases). CONCLUSIONS: Fall-related fractured skulls are a health and developmental concern for infants, highlighting the importance of a comprehensive assessment at the time of the injury to better understand adult actions. Findings indicated the need to develop prevention messages that include safe carrying and placement of infants.

Examining Sources of Social Norms Supporting Child Corporal Punishment Among Low-Income Black, Latino, and White Parents.

Child corporal punishment is a prevalent public health problem in the US. Although corporal punishment is sustained through parents' perceptions of social norms supporting this discipline behavior, little research has investigated where these normative perceptions come from. To fill this gap, we conducted 13 focus groups including 75 low-income Black, Latino, and White parents across five states in the US. Results revealed that one influential source of Black and White parents' perceived norms was their positive framing of corporal punishment experiences during childhood. Furthermore, Black parents formed normative perceptions based on identification with parents in their racial/ethnic group, while White parents did so with parents sharing the same generation. Results are interpreted in light of the false consensus effect and self-categorization theory. In contrast, Latino parents viewed their childhood experience of corporal punishment as negative and distanced their parenting practices from those practiced in their countries of origin, suggesting an influence of acculturation. Their perceived norms were likely transmitted through interpersonal communication within their social networks. These findings shed light on how social norms are formed and in turn guide parents' use of corporal punishment as a tool to discipline children.

Identifying knowledge, self-efficacy and response efficacy of alternative discipline strategies among low-income Black, Latino and White parents.

Corporal punishment (CP) leads to detrimental mental and physical consequences for a child. One way to prevent CP is to encourage parents to apply alternative discipline strategies that do not involve violence. Based on the knowledge-behavior gap framework in public health education, this study analyzed the focus group data of 75 low-income Black, Latino and White parents to uncover commonalties and differences in their knowledge, self-efficacy and response efficacy of alternative discipline strategies. Findings revealed that parents knew several alternative discipline strategies and had confidence in their ability to conduct these strategies. However, parents reported that some strategies were hard to implement because they lacked the relevant resources. Moreover, parents did not perceive that alternative discipline strategies were effective without using some forms of CP. Knowledge, self-efficacy and response efficacy of alternative discipline strategies are risk factors for child physical abuse and addressing them will help prevent injury and health impacts on children, while providing safe, stable, nurturing relationships and environments for child development.

Infant Homicides Within the Context of Safe Haven Laws - United States, 2008-2017.

Homicide is the 13th leading cause of death among infants (i.e., children aged <1 year) in the United States (1). Infant homicides occurring within the first 24 hours of life (i.e., neonaticide) are primarily perpetrated by the mother, who might be of young age, unmarried, have lower educational attainment, and is most likely associated with concealment of an unintended pregnancy and nonhospital birthing (2). After the first day of life, infant homicides might be associated with other factors (e.g., child abuse and neglect or caregiver frustration) (2). A 2002 study of the age variation in homicide risk in U.S. infants during 1989-1998 found that the overall infant homicide rate was 8.3 per 100,000 person-years, and on the first day of life was 222.2 per 100,000 person-years, a homicide rate at least 10 times greater than that for any other time of life (3). Because of this period of heightened risk, by 2008 all 50 states* and Puerto Rico had enacted Safe Haven Laws. These laws allow a parent† to legally surrender an infant who might otherwise be abandoned or endangered (4). CDC analyzed infant homicides in the United States during 2008-2017 to determine whether rates changed after nationwide implementation of Safe Haven Laws, and to examine the association between infant homicide rates and state-specific Safe Haven age limits. During 2008-2017, the overall infant homicide rate was 7.2 per 100,000 person-years, and on the first day of life was 74.0 per 100,000 person-years, representing a 66.7% decrease from 1989-1998. However, the homicide rate on first day of life was still 5.4 times higher than that for any other time in life. No obvious association was found between infant homicide rates and Safe Haven age limits. States are encouraged to evaluate the effectiveness of their Safe Haven Laws and other prevention strategies to ensure they are achieving the intended benefits of preventing infant homicides. Programs and policies that strengthen economic supports, provide affordable childcare, and enhance and improve skills for young parents might contribute to the prevention of infant homicides.

A Process for Identifying Indicators With Public Data: An Example From Sexual Violence Prevention.

Despite advances in the sexual violence (SV) prevention field, practitioners still face challenges with identifying indicators to measure the impact of their prevention strategies. Public data, such as existing administrative and surveillance system data, may be a good option for organizations to examine trends in indicators for the purpose of program evaluation. In this article, we describe a framework and a process for identifying indicators with public data. Specifically, we present the SV Indicator Framework and a five-step indicator review process, which we used to identify indicators for a national SV prevention program. We present the findings of the indicator review and explain how the process could be used by evaluators and program planners within other developing topic areas. Tracking indicators with public data, in conjunction with other evaluation methods, may be a viable option for state-level program evaluations. We discuss limitations and implications for practice and research.

Vital Signs: Estimated Proportion of Adult Health Problems Attributable to Adverse Childhood Experiences and Implications for Prevention - 25 States, 2015-2017.

INTRODUCTION: Adverse childhood experiences, such as violence victimization, substance misuse in the household, or witnessing intimate partner violence, have been linked to leading causes of adult morbidity and mortality. Therefore, reducing adverse childhood experiences is critical to avoiding multiple negative health and socioeconomic outcomes in adulthood. METHODS: Behavioral Risk Factor Surveillance System data were collected from 25 states that included state-added adverse childhood experience items during 2015-2017. Outcomes were self-reported status for coronary heart disease, stroke, asthma, chronic obstructive pulmonary disease, cancer (excluding skin cancer), kidney disease, diabetes, depression, overweight or obesity, current smoking, heavy drinking, less than high school completion, unemployment, and lack of health insurance. Logistic regression modeling adjusting for age group, race/ethnicity, and sex was used to calculate population attributable fractions representing the potential reduction in outcomes associated with preventing adverse childhood experiences. RESULTS: Nearly one in six adults in the study population (15.6%) reported four or more types of adverse childhood experiences. Adverse childhood experiences were significantly associated with poorer health outcomes, health risk behaviors, and socioeconomic challenges. Potential percentage reductions in the number of observed cases as indicated by population attributable fractions ranged from 1.7% for overweight or obesity to 23.9% for heavy drinking, 27.0% for chronic obstructive pulmonary disease, and 44.1% for depression. CONCLUSIONS AND IMPLICATIONS FOR PUBLIC HEALTH PRACTICE: Efforts that prevent adverse childhood experiences could also potentially prevent adult chronic conditions, depression, health risk behaviors, and negative socioeconomic outcomes. States can use comprehensive public health approaches derived from the best available evidence to prevent childhood adversity before it begins. By creating the conditions for healthy communities and focusing on primary prevention, it is possible to reduce risk for adverse childhood experiences while also mitigating consequences for those already affected by these experiences.

Impact of the United States federal child tax credit on childhood injuries and behavior problems.

Children who grow up in poverty are at risk for various poor outcomes. Socioeconomic policies can shape the conditions in which families are raising children and may be effective at reducing financial strain and helping families obtain economic sufficiency, thereby reducing risk for poor health outcomes. This study used data from two surveys conducted in the US, the National Longitudinal Survey of Youth 1979 (NLSY79) and the NLSY79 Young Adult survey to determine whether the U.S. Federal Child Tax Credit (CTC), a socioeconomic policy that provides tax relief to low- and middle-income families to offset the costs of raising children, is associated with child well-being, as indicated by whether the child had injuries requiring medical attention and behavioral problems. Fixed-effects models, accounting for year and state of residence, detected a lower likelihood of injuries requiring medical attention (OR = 0.58, 95% CI [0.40, 0.86]) and significantly fewer behavior problems (b = -2.07, 95% CI [-4.06, -0.08]) among children with mothers eligible to receive a CTC, but only when it was partially refundable (i.e., mothers could receive a tax refund for a portion of the CTC that exceeds their tax liability) for families making as little as $3000 a year. Tax credits like the CTC have the potential to alleviate financial strain among families, and consequently, may have impacts on injury and behavior problems.

An evaluation of welfare and child welfare system integration on rates of child maltreatment in Colorado.

Policies that improve the socioeconomic conditions of families have been identified as one of the most promising strategies to prevent child maltreatment, particularly neglect. In this study, we examined the impact of integrated Temporary Assistance for Needy Families (TANF) and child welfare (CW) systems on child maltreatment-related hospitalizations and Child Protective Services investigations and substantiations in nine counties in Colorado from 1996 to 2014. Regression analyses showed TANF-CW integration was associated with subsequent year, but not second-year, increases rates of substantiated child maltreatment overall and neglect specifically (that is, there was no longer a difference in the rate two years after the change in integration). Neither unemployment nor the one- or two-year lagged effect of integration were significant for investigations or child maltreatment-related hospitalizations. Increased opportunities to interact with a family in crisis using an integrated case management model may help explain these findings. Implications for future research are discussed.

Intergenerational Continuity in Adverse Childhood Experiences and Rural Community Environments.

OBJECTIVES: To understand the role of the community environment on intergenerational continuity in adverse childhood experiences (ACEs) among a rural White sample. METHODS: Parents in 12 counties in rural Iowa reported retrospectively on their own ACEs in 1989. We measured their child's ACEs retrospectively and prospectively across adolescence (n = 451 families). We measured structural and social process-related measures of community environment (i.e., community socioeconomic status, parents' perception of community services, perceived community social cohesion, and neighborhood alcohol vendor density) on multiple occasions during the child's adolescence. RESULTS: The 4 measures of community environment were all correlated with the child's ACEs, but only alcohol vendor density predicted ACEs after inclusion of covariates. Intergenerational continuity in ACEs was moderated by both social cohesion (b = -0.11; SE = 0.04) and alcohol vendor density (b = -0.11; SE = 0.05). CONCLUSIONS: Efforts to increase community social cohesion and manage alcohol vendor density may assist families in breaking the cycle of maltreatment across generations.

Cost-Benefit Analysis of Two Child Abuse and Neglect Primary Prevention Programs for US States.

We assessed the US state-level budget and societal impact of implementing two child abuse and neglect (CAN) primary prevention programs. CAN cost estimates and data from two prevention programs (Child-Parent Centers and Nurse-Family Partnership) were combined with current population, cost, and CAN incidence data by US state. A cost-benefit mathematical model for each program by US state compared program costs with the future monetary value of benefits from reduced CAN. The models used a lifetime time horizon from government payer and societal perspectives. Both programs could potentially avert CAN among tens of thousands of children across the country. Lower costs from reduced CAN may substantially offset, but not always entirely eliminate, payers' program implementation cost. Results are sensitive to the rate of CAN in each US state. Given the considerable lifetime societal cost of CAN, including victims' lost work productivity, the programs were cost saving from the societal perspective in all US states using base case methods. This analysis represents an overall minimum return on payers' investment because averted CAN is just one of many positive health and educational outcomes associated with these programs and non-monetary benefits from reduced CAN were not included. Translating cost and effectiveness research on injury prevention programs for local conditions might increase decision makers' adoption of effective programs.

Adverse childhood experiences and life opportunities: Shifting the narrative.

Substantial research shows that early adversity, including child abuse and neglect, is associated with diminished health across the life course and across generations. Less well understood is the relationship between early adversity and adult socioeconomic status, including education, employment, and income. Collectively, these outcomes provide an indication of overall life opportunity. We analyzed data from 10 states and the District of Columbia that used the adverse childhood experiences (ACE) module in the 2010 Behavioral Risk Factor Surveillance System to examine the association between ACEs and adult education, employment, and income. Compared to participants with no ACEs, those with higher ACE scores were more likely to report high school non-completion, unemployment, and living in a household below the federal poverty level. This evidence suggests that preventing early adversity may impact health and life opportunities that reverberate across generations. Current efforts to prevent early adversity might be more successful if they broaden public and professional understanding (i.e., the narrative) of the links between early adversity and poverty. We discuss our findings within the context of structural policies and processes that may further contribute to the intergenerational continuity of child abuse and neglect and poverty.

Fatal Abusive Head Trauma Among Children Aged <5 Years - United States, 1999-2014.

In the United States, abusive head trauma (AHT) is one of the leading causes of maltreatment fatalities among infants and children, accounting for approximately one third of these deaths (1). Monitoring trends in AHT and evaluating prevention strategies have historically been difficult because of differences in AHT definitions used in research and surveillance. CDC's case definition for AHT and data from the National Vital Statistics System were used to examine the trends in fatal AHT during 1999-2014 using Joinpoint trend analysis software. During this period, AHT resulted in nearly 2,250 deaths among U.S. resident children aged <5 years. Whereas rates were relatively stable during 1999-2009, there was a statistically significant average annual decline of 13.0% in fatal AHT rates during 2009-2014. The fatal AHT rates in 2013 and 2014 (0.41 and 0.43 per 100,000 children aged <5 years, respectively) were the lowest in the 16-year study period. Although this decline in AHT deaths is encouraging, more can be done to prevent AHT, including family-based interventions and policies that create safe, stable, nurturing relationships and environments for children.

Paid family leave's effect on hospital admissions for pediatric abusive head trauma.

Paediatric abusive head trauma (AHT) is a leading cause of fatal child maltreatment among young children. Current prevention efforts have not been consistently effective. Policies such as paid parental leave could potentially prevent AHT, given its impacts on risk factors for child maltreatment. To explore associations between California's 2004 paid family leave (PFL) policy and hospital admissions for AHT, we used difference-in-difference analyses of 1995-2011 US state-level data before and after the policy in California and seven comparison states. Compared with seven states with no PFL policies, California's 2004 PFL showed a significant decrease in AHT admissions in both <1 and <2-year-olds. Analyses using additional data years and comparators could yield different results.

Violence in the United States: Status, Challenges, and Opportunities.

IMPORTANCE: Interpersonal violence, which includes child abuse and neglect, youth violence, intimate partner violence, sexual violence, and elder abuse, affects millions of US residents each year. However, surveillance systems, programs, and policies to address violence often lack broad, cross-sector collaboration, and there is limited awareness of effective strategies to prevent violence. OBJECTIVES: To describe the burden of interpersonal violence in the United States, explore challenges to violence prevention efforts and to identify prevention opportunities. DATA SOURCES: We reviewed data from health and law enforcement surveillance systems including the National Vital Statistics System, the Federal Bureau of Investigation's Uniform Crime Reports, the US Justice Department's National Crime Victimization Survey, the National Survey of Children's Exposure to Violence, the National Child Abuse and Neglect Data System, the National Intimate Partner and Sexual Violence Survey, the Youth Risk Behavior Surveillance System, and the National Electronic Injury Surveillance System-All Injury Program. RESULTS: Homicide rates have decreased from a peak of 10.7 per 100,000 persons in 1980 to 5.1 per 100,000 in 2013. Aggravated assault rates have decreased from a peak of 442 per 100,000 in 1992 to 242 per 100,000 in 2012. Nevertheless, annually, there are more than 16,000 homicides and 1.6 million nonfatal assault injuries requiring treatment in emergency departments. More than 12 million adults experience intimate partner violence annually and more than 10 million children younger than 18 years experience some form of maltreatment from a caregiver, ranging from neglect to sexual abuse, but only a small percentage of these violent incidents are reported to law enforcement, health care clinicians, or child protective agencies. Moreover, exposure to violence increases vulnerability to a broad range of mental and physical health problems over the life course; for example, meta-analyses indicate that exposure to physical abuse in childhood is associated with a 54% increased odds of depressive disorder, a 78% increased odds of sexually transmitted illness or risky sexual behavior, and a 32% increased odds of obesity. Rates of violence vary by age, geographic location, sex, and race/ethnicity, and significant disparities exist. Homicide is the leading cause of death for non-Hispanic blacks from age 1 through 44 years, whereas it is the fifth most common cause of death among non-Hispanic whites in this age range. Additionally, efforts to understand, prevent, and respond to interpersonal violence have often neglected the degree to which many forms of violence are interconnected at the individual level, across relationships and communities, and even intergenerationally. The most effective violence prevention strategies include parent and family-focused programs, early childhood education, school-based programs, therapeutic or counseling interventions, and public policy. For example, a systematic review of early childhood home visitation programs found a 38.9% reduction in episodes of child maltreatment in intervention participants compared with control participants. CONCLUSIONS AND RELEVANCE: Progress has been made in reducing US rates of interpersonal violence even though a significant burden remains. Multiple strategies exist to improve violence prevention efforts, and health care providers are an important part of this solution.

It's not as simple as it sounds: Problems and solutions in accessing and using administrative child welfare data for evaluating the impact of early childhood interventions.

In recent years, there has been increasing interest in using administrative data collected by state child welfare agencies as a source of information for research and evaluation. The challenges of obtaining access to and using these data, however, have not been well documented. This study describes the processes used to access child welfare records in six different states and the approach to combining and using the information gathered to evaluate the impact of the Early Head Start program on children's involvement with the child welfare system from birth through age eleven. We provide "lessons learned" for researchers who are attempting to use this information, including being prepared for long delays in access to information, the need for deep understanding of how child welfare agencies record and code information, and for considerable data management work for translating agency records into analysis-ready datasets. While accessing and using this information is not easy, and the data have a number of limitations, we suggest that the benefits can outweigh the challenges and that these records can be a useful source of information for policy-relevant child welfare research.

The effect of Early Head Start on child welfare system involvement: A first look at longitudinal child maltreatment outcomes.

The high societal and personal costs of child maltreatment make identification of effective early prevention programs a high research priority. Early Head Start (EHS), a dual generational program serving low-income families with children prenatally through age three years, is one of the largest federally funded programs for infants and toddlers in the United States. A national randomized trial found EHS to be effective in improving parent and child outcomes, but its effectiveness in reducing child maltreatment was not assessed. The current study used administrative data from state child welfare agencies to examine the impact of EHS on documented abuse and neglect among children from seven of the original seventeen programs in the national EHS randomized controlled trial. Results indicated that children in EHS had significantly fewer child welfare encounters between the ages of five and nine years than did children in the control group, and that EHS slowed the rate of subsequent encounters. Additionally, compared to children in the control group, children in EHS were less likely to have a substantiated report of physical or sexual abuse, but more likely to have a substantiated report of neglect. These findings suggest that EHS may be effective in reducing child maltreatment among low-income children, in particular, physical and sexual abuse.

Child maltreatment in Puerto Rico: findings from the 2010 National Child Abuse and Neglect Data System.

OBJECTIVE: Child maltreatment can have long-term adverse effects. Quantifying the scope and characteristics of child maltreatment is necessary for effective prevention in Puerto Rico. METHODS: The National Child Abuse and Neglect Data System Child File contains all the reports of child maltreatment from the United States (US) and Puerto Rico. A child maltreatment victim is defined as a child whose maltreatment was substantiated or indicated by the local child protective agency. We compared reporting and victimization rates and reporting sources in Puerto Rico, with those in the US and examined characteristics of child maltreatment in Puerto Rico. RESULTS: During 2006-2010, a total of 31,849-40,712 cases of child maltreatment were reported annually in Puerto Rico. Victimization rates are consistently higher in Puerto Rico than in the US (10.7/1,000-14.8/1,000 in Puerto Rico vs. 10.1/1,000-12.1/1,000 in the US), despite consistently lower reporting rates. In 2010, victimization rates were highest among children aged 1-6 years. In Puerto Rico, neglect is the most common form of maltreatment, followed by emotional abuse; however, the majority of victims suffered multiple types of abuse. Reporting was more commonly anonymous in Puerto Rico (29.8%) than in the US (9.4%) and less commonly provided by professionals in Puerto Rico (37.2%) than in the US (58.7%). CONCLUSION: We identified a high prevalence of child maltreatment in Puerto Rico. A lower reporting rate, higher victimization rate, and substantial percentage of anonymous reporting indicate potential underreporting of child maltreatment in Puerto Rico. Increasing the awareness and training professionals for improved child maltreatment identification could help alleviate the problem of underreporting.

Firearm-Related Traumatic Brain Injury Homicides in the United States, 2000-2019.

BACKGROUND: Traumatic brain injury (TBI) is a leading cause of homicide-related death in the United States. Penetrating TBI associated with firearms is a unique injury with an exceptionally high mortality rate that requires specialized neurocritical trauma care. OBJECTIVE: To report incidence patterns of firearm-related and nonfirearm-related TBI homicides in the United States between 2000 and 2019 by demographic characteristics to provide foundational data for prevention and treatment strategies. METHODS: Data were obtained from multiple cause of death records from the National Vital Statistics System using Centers for Disease Control and Prevention's Wide-Ranging Online Data for Epidemiologic Research database for the years 2000 to 2019. Number, age-adjusted rates, and percent of firearm and nonfirearm-related TBI homicides by demographic characteristics were calculated. Temporal trends were also evaluated. RESULTS: During the study period, there were 77 602 firearm-related TBI homicides. Firearms were involved in the majority (68%) of all TBI homicides. Overall, men, people living in metro areas, and non-Hispanic Black persons had higher rates of firearm-related TBI homicides. The rate of nonfirearm-related TBI homicides declined by 40%, whereas the rate of firearm-related TBI homicides only declined by 3% during the study period. There was a notable increase in the rate of firearm-related TBI homicides from 2012/2013 through 2019 for women (20%) and nonmetro residents (39%). CONCLUSION: Firearm-related violence is an important public health problem and is associated with the majority of TBI homicide deaths in the United States. The findings from this study may be used to inform prevention and guide further research to improve treatment strategies directed at reducing TBI homicides involving firearms.

Effect of screening for partner violence on women's quality of life: a randomized controlled trial.

CONTEXT: Although partner violence screening has been endorsed by many health organizations, there is insufficient evidence that it has beneficial health outcomes. OBJECTIVE: To determine the effect of computerized screening for partner violence plus provision of a partner violence resource list vs provision of a partner violence list only on women's health in primary care settings, compared with a control group. DESIGN, SETTING, AND PARTICIPANTS: A 3-group blinded randomized controlled trial at 10 primary health care centers in Cook County, Illinois. Participants were enrolled from May 2009-April 2010 and reinterviewed 1 year (range, 48-56 weeks) later. Participants were English- or Spanish-speaking women meeting specific inclusion criteria and seeking clinical services at study sites. Of 3537 women approached, 2727 were eligible, 2708 were randomized (99%), and 2364 (87%) were recontacted 1 year later. Mean age of participants was 39 years. Participants were predominantly non-Latina African American (55%) or Latina (37%), had a high school education or less (57%), and were uninsured (57%). INTERVENTION: Randomization into 3 intervention groups: (1) partner violence screen (using the Partner Violence Screen instrument) plus a list of local partner violence resources if screening was positive (n = 909); (2) partner violence resource list only without screen (n = 893); and (3) no-screen, no-partner violence list control group (n=898). MAIN OUTCOME MEASURES: Quality of life (QOL, physical and mental health components) was the primary outcome, measured on the 12-item Short Form (scale range 0-100, mean of 50 for US population). RESULTS: At 1-year follow-up, there were no significant differences in the QOL physical health component between the screen plus partner violence resource list group (n = 801; mean score, 46.8; 95% CI, 46.1-47.4), the partner violence resource list only group (n = 772; mean score, 46.4; 95% CI, 45.8-47.1), and the control group (n = 791; mean score, 47.2; 95% CI, 46.5-47.8), or in the mental health component (screen plus partner violence resource list group [mean score, 48.3; 95% CI, 47.5-49.1], the partner violence resource list only group [mean score, 48.0; 95% CI, 47.2-48.9], and the control group [mean score, 47.8; 95% CI, 47.0-48.6]). There were also no differences between groups in days unable to work or complete housework; number of hospitalizations, emergency department, or ambulatory care visits; proportion who contacted a partner violence agency; or recurrence of partner violence. CONCLUSIONS: Among women receiving care in primary care clinics, providing a partner violence resource list with or without screening did not result in improved health. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00526994.

Physical Abuse of Children by Stepfathers in Colombia.

Evolutionary psychologists claim that stepparents perpetrate substantially more child physical abuse than genetic parents, and that they do so because they are less invested in genetically unrelated children. The objective of this study was to examine these claims by investigating whether, and why, fathers in a Colombian sample physically abused their stepchildren more than their genetic children. Fathers (N = 86) and their partners living in Bogotá were interviewed by Klevens et al. Half of the fathers had been reported to authorities for child physical abuse, the other half were matched controls. Secondary analysis was conducted of Klevens et al.'s data. Hypotheses from the evolutionary and ecological accounts of child maltreatment were tested using logistic and ordinal regression. Both the prevalence and the frequency of physical abuse by stepfathers were considerably greater than those of genetic fathers. Several indicators of adversity-including parental youth and experience of abuse, fathers' chronic stress, and mothers' poor communication with the child-were associated with both abuse and stepparenthood. Models including these variables indicated that they accounted for much of the stepfathers' higher rates of abuse. Consistent with the ecological account, much of the stepfathers' greater prevalence and frequency of abuse in this sample is likely to have resulted from confounding variables, rather than from the step relationship per se.