Coercive Control Between Intimate Partners: An Application to Nonfatal Strangulation

Which battering interventions work? An updated Meta-analytic review of intimate partner violence treatment outcome research

This meta-analytic review is an update to the first meta-analysis of battering interventions (Babcock et al., 2004) and includes 59 studies that evaluated treatment efficacy for domestically violent men and women. The outcome literature of controlled quasi-experimental and experimental studies was reviewed to test the relative impact of Duluth, cognitive-behavioral therapy (CBT), and novel types of treatment on subsequent recidivism of violence. The first model examines studies comparing interventions to no treatment control conditions. The second model compares novel interventions to treatment as usual (i.e., the Duluth curriculum). Study design and type of treatment were tested as moderators in both models. Consistent with previous meta-analyses, effect sizes were in the small range, smaller in true experiments as compared to quasi-experimental designs when recidivism was based on partner or police reports. However, new experiments comparing novel treatments to the Duluth curriculum reveal effect sizes comparable to when comparing novel interventions to an untreated comparison group. Novel interventions, including Acceptance and Commitment Therapy and Circles of Peace had the largest effect sizes when put head-to-head with Duluth control groups. Future research directions include testing moderators and mechanisms of change of the battering interventions that work. Implications for evidence-based practice in criminal justice include broader implementation and continued testing of these novel interventions with demonstrated efficacy in stopping intimate partner violence.

Assault-related anoxia and neck injuries in US emergency departments

BACKGROUND

Early identification of non-fatal strangulation in the context of intimate partner violence (IPV) is crucial due to its severe physical and psychological consequences for the individual experiencing it. This study investigates the under-reported and underestimated burden of IPV-related non-fatal strangulation by analysing assault-related injuries leading to anoxia and neck injuries.

METHODS

An IRB-exempt, retrospective review of prospectively collected data were performed using the National Electronic Injury Surveillance System All Injury Programme data from 2005 to 2019 for all assaults resulting in anoxia and neck injuries. The type and mechanism of assault injuries resulting in anoxia (excluding drowning, poisoning and aspiration), anatomical location of assault-related neck injuries and neck injury diagnosis by morphology, were analysed using statistical methods accounting for the weighted stratified nature of the data.

RESULTS

Out of a total of 24 493 518 assault-related injuries, 11.6% (N=2 842 862) resulted from IPV (defined as perpetrators being spouses/partners). Among 22 764 cases of assault-related anoxia, IPV accounted for 40.4%. Inhalation and suffocation were the dominant mechanisms (60.8%) of anoxia, with IPV contributing to 41.9% of such cases. Neck injuries represented only 3.0% of all assault-related injuries, with IPV accounting for 21% of all neck injuries and 31.9% of neck contusions.

CONCLUSIONS

The study reveals a significant burden of IPV-related anoxia and neck injuries, highlighting the importance of recognising IPV-related strangulation. Comprehensive screening for IPV should be conducted in patients with unexplained neck injuries, and all IPV patients should be screened for strangulation events.

Accounting for Multiple Nonfatal Strangulation in Intimate Partner Violence Risk Assessment

Nonfatal strangulation is a prevalent, underreported, and dangerous form of intimate partner violence (IPV). It is particularly important to assess for strangulation among abused women as this form of violence may not leave visible injury. The most severe negative physical and mental health consequences of strangulation appear to be dose-related, with those strangled multiple times or to the point of altered consciousness at higher risk of negative sequelae. This research examines the relationship between multiple strangulation, loss of consciousness due to strangulation, and risk of future near-fatal violence to modify the Danger Assessment (DA) and the Danger Assessment for Immigrant women (DA-I), IPV risk assessments intended to predict near-fatal and fatal violence in intimate relationships. Data from one study (n = 619) were used to modify the DA to include an item on multiple strangulation or loss of consciousness due to strangulation. Data from an independent validation sample (n = 389) were then used to examine the predictive validity of the updated DA and DA-I. The updated version of the DA predicts near-fatal violence at 7-8 months follow-up significantly better than the original DA. Adding multiple strangulation or loss of consciousness to the DA-I increased the predictive validity slightly, but not significantly. The DA and DA-I are intended to be used as a collaboration between IPV survivors and advocates as tools for education and intervention. Whether or not an IPV survivor has been strangled, she should be educated about the dangerous nature of strangulation and the need for medical intervention should her partner use strangulation against her. This evidence-based adaptation of the DA and DA-I may assist practitioners to assess for and intervene in dangerous IPV cases.

Non-Fatal Strangulation/Choking During Sex and Its Associations with Mental Health: Findings from an Undergraduate Probability Survey

Choking/strangulation during sex is prevalent among young adults in the United States. We examined associations between having ever been choked and participants' current mental health symptoms (e.g., feeling depressed, anxious, sad, lonely) in the prior 30 days and in the prior year. Participants were 4352 randomly sampled undergraduates who completed a confidential online survey and reported lifetime partnered sexual activity. 33.6% of women and 6.0% of men reported having been choked more than five times. After adjusting for demographic characteristics, having been choked remained significantly associated with all four mental health outcomes, except for overwhelming anxiety among men.

Examining Adolescent Family Experiences as Risks for Young Adulthood Intimate Partner Violence in Two Longitudinal Samples

Little research has examined multiple family risks that may act as precursors to the cycle of violence, or the link between child maltreatment and subsequent intimate partner violence perpetration. Scholarly work that addresses this gap has important implications for early prevention and intervention efforts aimed at reducing family violence in adolescence and young adulthood. Based upon the family stress model and the cycle of violence hypothesis, it was hypothesized that adolescent experiences of economic pressure, caregiver depressed mood, and caregiver conflict would increase risk for abusive parenting and that abusive parenting in adolescence would link these family experiences to partner violence perpetration in young adulthood. The model was tested using longitudinal data spanning 12 years from two studies: The Iowa Youth and Families Project (N = 306, 56.2% women), a sample of White, married-parent families, and the Family and Community Health Study (N = 213, 53.3% women), a sample of Black families diverse in terms of family structure. Path model analyses provided support for the proposed model in each sample, highlighting the importance of considering several adolescent family experiences in work on the etiology of partner violence. Policy and practice interventions are offered, such as the need for economic supports for families, accessible mental health care, and relationship education programming for youth.

Examining Relationship and Abuse Tactics Associated with Nonfatal Strangulation Experiences Before and After a Protective Order

Nonfatal strangulation is associated with significant physical harm and lethal violence. The overall objective of this study was to examine relationship and abuse tactics for women with (n = 369) and without (n = 276) nonfatal strangulation experiences the year before, and the year after, a civil protective order (PO) against an abusive (ex)partner was obtained. Furthermore, this study sought to examine which abuse tactics, including nonfatal strangulation, were associated with mental health status at follow-up. In the year before the PO, 57% of women experienced nonfatal strangulation and 12.4% experienced nonfatal strangulation in the year after the PO by their abusive (ex)partner. Those with nonfatal strangulation experiences in the year before the PO were 3.5 times more likely to experience nonfatal strangulation after the PO. Additionally, death threats in the year before the PO as well as having spent any time in the relationship with the abuser after the PO were uniquely associated with post-PO nonfatal strangulation. Furthermore, abuser control tactics and severe violence after the PO were significantly associated with mental health status at follow-up after controlling for baseline mental health status. Study results also suggest that those with nonfatal strangulation experiences may have an especially difficult time initiating and maintaining separation from abusive partners. Results suggest that there are specific risk factors to consider in tailoring PO protections, safety supports, and resources for those with prior nonfatal strangulation experiences.

United States ED Visits by Adult Women for Nonfatal Intimate Partner Strangulation, 2006 to 2014: Prevalence and Associated Characteristics

INTRODUCTION

Nonfatal intimate partner strangulation poses significant acute and long-term morbidity risks and also heightens women's risk for future femicide. The lifetime prevalence of nonfatal intimate partner strangulation has been estimated to be approximately 10%, or 11 million women, in the general United States population. Given the potential for significant health risks and serious consequences of strangulation, this study adds to the limited literature by estimating prevalence and describing the associated characteristics of strangulation-related visits among United States ED visits by adult women after intimate partner violence.

METHODS

Prevalence estimation as well as simple and multivariable logistic regression analyses were completed using data from the Nationwide Emergency Department Sample spanning the years 2006 to 2014.

RESULTS

The prevalence of strangulation codes was estimated at 1.2% of all intimate partner violence visits. Adjusting for visits, hospital characteristics, and visit year, higher odds of strangulation were noted in younger women, metropolitan hospitals, level I/II trauma centers, and non-Northeast regions. Increases in strangulation events among intimate partner violence-related visits in recent years were also observed.

DISCUSSION

A relatively low prevalence may reflect an underestimate of true nonfatal intimate partner strangulation visits owing to coding or a very low rate of ED visits for this issue. Higher odds of strangulation among intimate partner violence visits by women in more recent years may be due to increased recognition and documentation by frontline clinicians and coding teams. Continued research is needed to further inform clinical, postcare, and social policy efforts.