Epidemiology of Homicide in Community-Dwelling Older Adults: A Systematic Review and Meta-Analysis

Background: Empirical research investigating older adult homicide is sparse and rarely accumulated for greater insights. This systematic review and meta-analysis quantifies the prevalence and characteristics of homicide victimization among older adults (65 years and older) compared with younger adults (18–64 years). Method: We searched Cumulative Index to Nursing and Allied Health Literature, Cochrane, Criminal Justice Abstracts, EMBASE, MEDLINE, ProQuest, PsycINFO, Scopus, and Web of Science for studies published before December 31, 2018 (International Prospective Register of Systematic Reviews registration: CRD42017054536). Included were English-language, original, peer-reviewed studies describing the homicide of older adults. Excluded were studies not meeting age criteria, residence as an institution, or with insufficient outcome variables. The review included 39 studies; 17 were included in the meta-analysis. Data were extracted via open access or from study authors. Heterogeneity was assessed through study-level random effects estimates. Results: Pooled homicide rates per 100,000 population were 2.02 (95% CI [1.23, 3.33]) for older adults ( n = 35,325) and 3.98 (95% CI [2.42, 6.53]) for younger adults ( n = 607,224; rate ratio = .51, 95% CI [0.37, 0.70], p < .001). Proportion estimates for older adults: victim female 46.3%, location home 71.4%, offender familiar 25.2%, compared to stranger, 24.2%, motive argument 36.1%, compared to felony 30.8%, and weapon firearm 24.5%. Older adults were significantly different to younger adult victims ( p = <.001) for female ( OR = 2.5, 95% CI [2.02, 3.10]), home (3.87, 95% CI [3.45, 4.35]), stranger (1.81, 95% CI [1.66, 1.98]), argument (0.33, 95% CI [0.28, 0.39]), felony (2.78, 95% CI [2.58, 2.99]), and firearm (0.38, 95% CI [0.36, 0.40]). Conclusions: Homicide against older adults differs from younger adults and warrants specific research and tailored prevention strategies.

Racial Disparities in Pregnancy-associated Intimate Partner Homicide

Pregnancy-associated femicide accounts for a mortality burden at least as high as any of the leading specific obstetric causes of maternal mortality, and intimate partners are the most common perpetrators of these homicides. This study examined pregnancy-associated and non-pregnancy-associated intimate partner homicide (IPH) victimization among racial/ethnic minority women relative to their non-minority counterparts using several sources of state-level data from 2003 through 2017. Data regarding partner homicide victimization came from the National Violent Death Reporting System, natality data were obtained from the Centers for Disease Control and Prevention’s National Center for Health Statistics, and relevant sociodemographic information was obtained from the U.S. Census Bureau. Findings indicated that pregnancy and racial/ethnic minority status were each associated with increased risk for partner homicide victimization. Although rates of non-pregnancy-associated IPH victimization were similar between Black and White women, significant differences emerged when limited to pregnancy-associated IPH such that Black women evidenced pregnancy-associated IPH rates more than threefold higher than that observed among White and Hispanic women. Relatedly, the largest intraracial discrepancies between pregnant and non-pregnant women emerged among Black women, who experienced pregnancy-associated IPH victimization at a rate 8.1 times greater than their non-pregnant peers. These findings indicate that the racial disparities in IPH victimization in the United States observed in prior research might be driven primarily by the pronounced differences among the pregnant subset of these populations.

A State-Level Analysis of Gender Inequality on Male and Female Homicide

Inequalities have received a fair amount of study from criminologists interested in homicide and crime. The vast majority of the examinations exploring the relationship between inequality and homicide and crime have examined income inequality. Nonetheless, feminist theorists have stated that gender inequality may be predictive of all violence, not just female victimization. The UNDP gender inequality index was replicated for states in the United States and applied to overall, male, and female homicide rates. The findings demonstrate that increased gender inequality is predictive of increased overall, male, and female homicide. These findings illustrate that gender inequality is predictive of overall, male, and female homicide victimization.

Parsing out the “Hispanic Effect” in Disaggregated Homicide Trends at the Intersection of Race, Ethnicity, and Gender from 1990 to 2016

This study contributes to homicide research by parsing out the Hispanic Effect and applying an intersectional approach to examining U.S. homicide victimization trends by race, ethnicity, and gender, jointly. Drawing on mortality data, we document and describe total, firearm, and non-firearm homicide victimization rates from 1990 to 2016 for six subgroups: Black women, Black men, Hispanic women, Hispanic men, White women, and White men. The analysis of within- and between-group homicide trends reveals important subgroup-specific patterns that prior studies using aggregate or confounded data have masked. The findings have important research, theory, and policy implications and advocate for an intersectional approach to studying homicide.

Gender Equality and the Usual Suspects: A Cross-National Study on Female and Male Homicide Victimization

Gender inequality is a central concept in cross-national feminist criminological literature. There is not a readily agreed-upon operationalization of gender inequality. The variation in the operationalization of gender inequality in cross-national research could be the cause for the inconsistent findings. We explored if the operationalization of gender inequality affects the association of the variables with gender-specific homicide across nations. Utilizing SUR and Wald Tests, our results indicate that measurement matters. When a measure of gender inequality includes an income competent, it has an association with gender-specific homicide. We conclude by situating our findings into the larger cross-national literature.

Trends in alcohol and marijuana detected in homicide victims in 9 US states: 2004–2016

Background Use of alcohol and other drugs is a major risk factor for assaultive injuries and violent deaths. The purpose of this study was to examine the time trends in the prevalence of alcohol and marijuana detected in homicide victims. Methods We analyzed toxicological testing data for homicide victims (n = 12,638) from the 2004–2016 National Violent Death Reporting System in 9 US states (Colorado, Georgia, Massachusetts, New Jersey, Oregon, Rhode Island, South Carolina, Virginia, and Wisconsin). We used the Cochran-Armitage test for trend to assess the statistical significance of changes in the prevalence of alcohol and marijuana detected in these homicide victims during the study period. Results Overall, 37.5% of the homicide victims tested positive for alcohol, 31.0% positive for marijuana, and 11.4% positive for both substances. During the study period, the prevalence of marijuana increased from 22.3% (95% confidence interval [CI] = 19.6, 25.0) in 2004 to 42.1% (95% CI = 39.2, 44.9) in 2016 (Z = -15.7; P < .001) while the prevalence of alcohol declined slightly (Z = 1.5; P = 0.143). Marked increases in the prevalence of marijuana were observed in both sexes and across age and racial groups. Conclusions Marijuana is increasingly detected in homicide victims irrespective of demographic characteristics. Further research is needed to assess the causal role of marijuana use and concurrent use of marijuana and alcohol in homicide victimization.

Characteristics and Factors Associated With Intimate Partner Violence–Related Homicide Post-Release From Jail or Prison

Intimate partner violence (IPV) victimization and perpetration are common experiences among incarcerated people. Despite knowledge regarding the challenges of re-integrating post-release from jail or prison, including an increased risk of homicide victimization, there is a dearth of research focused on IPV-related homicides post-release from a correctional facility. To address this gap, the current study used 2003-2015 data from the National Violent Death Reporting System from 27 states to examine the characteristics and circumstances surrounding IPV-related homicides soon after the homicide victim was released from jail or prison. Of the 126 post-release homicides, 13.5% were related to IPV. Post-release homicides involving either a female victim or perpetrator were more likely to be IPV-related. In the case of many of the IPV-related homicides, there was evidence of prior IPV as well as potential bystanders (including formal and informal supports) who were aware of the risk for IPV escalation and possible lethality. Compared with non-IPV post-release homicides, those related to IPV were more likely to occur in the victim’s home, have been immediately preceded by a physical fight, and have occurred by means other than firearm. These findings highlight the importance of enhancing the capacity of correctional facilities and community-based services to assess for and respond to risk of IPV and IPV-related lethality for individuals leaving correctional institutions.

The Enduring Influence of Cohort Characteristics on Race-Specific Homicide Rates

This study extends research on cohort effects and crime by considering how bifurcated population dynamics and institutional constraints explain variation in homicide rates across racial groups in the United States. Drawing upon the extensive research on racial residential segregation and institutional segmentation, we theorize how the criminogenic influences of cohort characteristics elucidated in prior work will be greater for Black cohorts than for White cohorts. We assess our hypothesis by estimating Age-Period-Cohort Characteristic models with data for the total population and separately for the Black and White populations over the 1975–2014 period. The results reveal persistent effects of relative cohort size and nonmarital births on Black cohort-specific homicide rates but null effects among the White population. These effects follow Black birth cohorts across the life course, leading to higher rates of both homicide arrest and homicide victimization.