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PubMed2000

Firearm availability and homicide rates across 26 high-income countries.

BACKGROUND: Among developed nations, the United States has the highest rate of civilian gun ownership, and the highest homicide rate. We examine whether the United States is merely an exception, or if a relationship between gun availability and homicide exists across all developed nations. METHODS: Homicide rates for the early 1990s come from 26 of 27 of the highly industrialized or high-income countries with greater than 1 million population as classified by the World Bank. Two common proxies for gun availability are used, the percentage of suicides with a firearm, and the"Cook index," the average of the percentage of suicides with a firearm and the percentage of homicides with a firearm. RESULTS: In simple regressions (no control variables) across 26 high-income nations, there is a strong and statistically significant association between gun availability and homicide rates. CONCLUSION: Across developed countries, where guns are more available, there are more homicides.

Developed Countries↗
PubMed2006

Elder homicide: a 20-year study.

A subcategory of elder maltreatment is the fatal outcome, or elder homicide. Some cases of elder homicide result from chronic abuse and/or neglect, while others appear to be sudden, with no pertinent history. The research and literature of elder homicide are lacking, making the investigation of each case difficult; the typical victim, perpetrator, scenario, and cause of death are not known. Components of homicide such as sexual assault and toxicology also lack study. We analyzed all elder deaths over a 20-year period. Cases included those with victims greater than or equal to 65 years of age. These deaths totaled 2137: natural = 1506, accident = 344, suicide = 139, homicide = 127, and undetermined = 21. Focusing on homicides, variables analyzed were age, race, gender, cause of death, location of death, time of year, motive, perpetrator, toxicology, and sexual assault component. By identifying the typical victim, perpetrator, scenario, and autopsy findings, these cases can be more completely investigated and possibly prevented.

Aged↗
PubMed2004

Weekend effects on binge drinking and homicide: the social connection between alcohol and violence in Russia.

AIMS AND DESIGN: This study employs unique newly available Russian mortality data to examine the social connection between binge drinking and homicide in the country. SETTING, PARTICIPANTS AND MEASUREMENTS: All death certificates of those aged 20-64 years in the Udmurt Republic, Russia, were analyzed according to day and cause of death for the years 1994-98. Deaths due to alcohol poisoning were used as a proxy for binge drinking. FINDINGS: There was a high bivariate correlation (r = 0.75) between the daily distribution of deaths due to alcohol and homicide. The number of alcohol deaths was significantly higher on Saturdays and Sundays (presumably as a result of drinking on Friday and Saturday nights) and the number of homicide deaths was significantly higher on Fridays and Saturdays. CONCLUSIONS: The levels of alcohol consumption and homicide in Russia are among the highest in the world, and there is mounting evidence that the two are related. Binge drinking, preference for distilled spirits and a high social tolerance for heavy drinking may act as social and cultural contextual factors that might increase the risk of violent outcomes. The high correspondence between the daily distribution of alcohol and homicide deaths provides indirect evidence for the social connection between them. While these findings do not represent a causal connection, when placed in the context of the growing literature on this topic they provide further support of an association between alcohol consumption and homicide rates in Russia and preliminary evidence for the intermediate role in this relationship played by social context.

Adult↗
PubMed2006

Alcohol consumption, alcoholics anonymous membership, and homicide mortality rates in Ontario 1968 to 1991.

BACKGROUND: Research has shown a strong link between alcohol use and a variety of problems, including violence. Parker and colleagues have presented a selective disinhibition theory for the link between alcohol use and homicide (and other violence) that posits a causal relationship that is also influenced by other situational and contextual factors. This model is particularly well suited for aggregate-level investigations. In this study, we examine the impact of alcohol factors, including consumption measures and Alcoholics Anonymous (AA) membership rates, on homicide mortality rates in Ontario, and test predictions derived from the selective disinhibition model. METHODS: Time series analyses with ARIMA modeling were applied to total, male, and female homicide rates in Ontario between 1968 and 1991. The analyses performed included total alcohol consumption, spirits consumption, beer consumption, and wine consumption. Missing AA membership data were interpolated with cubic splines. RESULTS: For the total population and males, homicide rates were significantly and positively related to total alcohol consumption and to the consumption of beer and spirits. They were also negatively related to AA membership rates in the analyses involving spirits and wine and positively related to unemployment rates in the analyses involving beer, wine, and total alcohol. Among females, none of the measures were significant predictors of homicide mortality rates. CONCLUSIONS: These data provide important support for the selective disinhibition model and confirm important relationships between per capita consumption measures and homicide mortality rates, especially among males, seen in other studies. Additionally, the results for AA membership rates are consistent with the hypothesis that AA membership and treatment for misuse of alcohol can exert beneficial effects observable at the population level.

Adolescent↗
PubMed1995

Mental disorders and homicidal behavior in female subjects.

OBJECTIVE: Although violent behavior is one of the most important factors that have a detrimental effect on quality of life, there are very few quantitative epidemiological studies published on this issue. In particular, female homicidal behavior has remained poorly studied. This study reveals the association between some specific DSM-III-R disorders and female homicidal behavior. METHOD: The author reviewed forensic psychiatric examination of 127 female homicide offenders in Finland over a 13-year period. RESULTS: Female homicide offenders had about a 10-fold higher odds ratio than the general female population for having schizophrenia or a personality disorder. The disorders with the most substantially higher odds ratios were alcohol abuse/dependence and antisocial personality disorder. CONCLUSIONS: Mental disorders appear to have a statistical relationship with homicidal behavior in countries with relatively low crime rates. On the basis of the data, there may be special subgroups of women among whom the risk of homicidal behavior is very high.

Alcoholism↗
PubMed2004

Psychiatric morbidity among homicide offenders: a Swedish population study.

OBJECTIVE: The authors examined psychiatric diagnoses of all individuals convicted of homicide and attempted homicide in Sweden from 1988 to 2001 (N=2,005). METHOD: High-quality national crime and hospital registers were linked to investigate standardized psychiatric diagnoses of homicide offenders. RESULTS: The presence or absence of psychiatric diagnoses was ascertained for 1,625 (81%) of the homicide offenders; 1,464 (90%) of these offenders had a psychiatric diagnosis. Twenty percent (N=409) of all 2,005 offenders had a psychotic illness, and 54% (N=589) of a subgroup of 1,091 offenders with information on secondary diagnoses had a personality disorder as a principal or secondary diagnosis. Only 10% of the offenders for whom psychiatric diagnostic information was available had no diagnosis. CONCLUSIONS: Using a comprehensive method for identifying psychiatric illness in homicide offenders, the authors found higher rates of psychiatric morbidity than previous studies. Their findings underline the importance of psychiatric assessment in homicide offenders and suggest that treatment might have a preventive role.

Adolescent↗
PubMed1982

Homicide and suicide among the Cherokee and Lumbee Indians of North Carolina.

The Cherokee and Lumbee, the two major Indian populations in North Carolina, have exhibited similarities in patterns of homicide and suicide. Both Indian populations have higher rates of homicidal than of suicidal death. Yet in 1972-73, the Lumbee homicide rates was considerably higher than that for the Cherokee, but the Cherokee's suicide rate exceeded that for the Lumbee. During 1974-1976, the Cherokee manifested excessively high rates of violent death, with suicide increasing faster than homicide. The Lumbee homicide rate declined during this period, while the suicide rate increased. Lumbee violence patterns indicate a slight dissipation of cultural traits that predispose them to aggressive behaviour and the concomitant emergence of a trend toward self-destructive behaviour. The rise in Cherokee suicide rate may be consistent with the harmony Ethic of some tribe members, but the sharp increase in homicide may reflect the erosion of the traditional non-violent ethic among the band as a whole.

Adolescent↗
PubMed1991

Homicide as a risk factor for PTSD among surviving family members.

In this National Institute of Justice-funded study, random digit dialing telephone survey methodology was used to screen a large, nationally representative sample (N = 12,500) of the noninstitutionalized U.S. adult population to identify surviving family members and friends of victims of criminal homicide and alcohol-related vehicular homicide. A total of 9.3% of the national sample had lost a family member or friend to homicide. Immediate family survivors (n = 206) completed an interview assessing demographic characteristics and DSM-III-R criteria for homicide-related post-traumatic stress disorder (PTSD). The interview participation rate was 84%. Among immediate family survivors, 23.3% developed PTSD at some point in their lifetimes, and 4.8% met full diagnostic criteria for PTSD during the preceding 6 months. Survivors of criminal and vehicular homicide victims were equally likely to develop PTSD. Survivors who experienced the homicide during their childhood, adolescence, or adulthood also showed equal likelihood of PTSD. Clinical implications of findings are discussed.

Accidents, Traffic↗
PubMed2003

Youth homicide: a review of the literature and a blueprint for action.

This article first synthesizes the literature on clinical and empirical findings related to youth homicide. Thereafter, it reviews the literature with respect to the treatment of juvenile homicide offenders. Although a large body of literature exists, many questions regarding etiology, associated risk factors, intervention strategies, and long-term outcomes remain unanswered. The article concludes with recommendations to guide future research efforts with the aim of increasing understanding of etiological factors associated with juvenile homicide and designing effective intervention strategies. Greater advances in knowledge will follow with the implementation of enhanced methodological designs that examine juvenile homicide across four distinct time frames: the years preceding the homicide, the time period immediately following the homicide, the incarcerative or treatment period, and the post-release period.

Adolescent↗
PubMed2005

Characteristics of perpetrators of homicide in independent inquiries.

An independent inquiry has been mandatory for all homicides committed by persons in contact with mental health services in England and Wales since 1994. The aim of this study is to provide a detailed description of the characteristics of the perpetrators of homicides covered by the independent inquiries between 1994 and 2002. Ninety-seven published inquiry reports were collected for analysis. Descriptive case data regarding the perpetrator was manually abstracted from each report using a structured questionnaire. Ninety-nine individuals committed 109 homicides. Most perpetrators of homicide were male, with a diagnosis of schizophrenia or other psychotic illness. Victims are most likely to be a family member or an acquaintance. Psychotic symptoms as well as alcohol or substance misuse were found to be present at the time of homicide. Comparisons with the National Confidential Inquiry into Suicides and Homicide by People with a Mental Illness suggest that independent inquiries appear to focus on high profile cases. Patient characteristics can be used to inform risk assessments that may improve current prediction of violence in mentally ill persons.

England↗
PubMed2006

Migration psychosis and homicide in Singapore: a five year study.

Psychiatric research into violent offences, particularly murder, have been scant in the South East Asian region, with the last major review of homicides in Singapore and their association with psychiatric disorders being as far back as 1985. This study seeks to update the psychiatric community on individuals charged with murder in Singapore from 1997 to 2001 and particularly to further investigate the phenomenon of 'migration psychosis' in relation to foreigners in this sample who have committed homicide. One hundred and ten individuals in Singapore were charged with murder between 1997 and 2001. Socio-demographic data, psychiatric diagnoses, offence and victim profiles and court outcomes were obtained. The group consisting of offenders who were Singapore citizens or permanent residents was compared with those offenders who were foreigners. Analysis was done using the statistical package, SPSS. The proportion of foreigners in this study who committed homicide is significantly higher than the proportion of citizens/permanent residents in the general population. Foreigners who commit homicide also appear to (i) suffer from the more serious psychiatric illnesses of mood and psychotic disorders compared with locals, (ii) be less likely to have a known history of violence or a past forensic history and (iii) be more likely to be new to psychiatric services compared with the local homicide offenders. Compared with locals, foreigners appear to have a higher risk for committing homicide. Yet, they are less likely to appear early enough before mental health services. Some form of basic education to employers of foreigners as well as to the foreigners themselves on the early signs of mental illness is recommended.

Adolescent↗
PubMed1999

Alcohol availability and homicide in New Orleans: conceptual considerations for small area analysis of the effect of alcohol outlet density.

OBJECTIVE: To determine the geographic relation between homicide rate and two competing measures of exposure to alcohol outlets, alcohol outlets per square mile and alcohol outlets per person. METHOD: Homicides occurring in 1994 and 1995 and on-sale and off-sale alcohol outlets with active 1995 licenses were geocoded by address for aggregation at the census tract level. Ecologic analysis of the 155 urban residential census tracts in New Orleans was conducted with controls for potential sociodemographic confounders (% black, % adults unemployed, % unmarried households, and ratio males 15-24/males 35-44). RESULTS: After logarithmic transformation of all study variables, sociodemographic confounders alone accounted for 58% (R2 = .58) of the variance of homicide rates. Adding off-sale alcohol outlet density to the models, measured (beta +/- SE) either as outlets per square mile (beta = .211 +/- .062) or outlets per person (beta = .244 +/- .063), yielded strong geographic relations with homicide and increased the amount of variance explained (R2 = .62). A 10% higher off-sale outlet density accounted for a 2.4% higher homicide rate. CONCLUSIONS: Both off-sale alcohol outlets per square mile and off-sale outlets per person demonstrate strong geographic associations with homicide rates among urban residential census tracts in New Orleans. These findings suggest that communities faced with high rates of assaultive violence might consider policy interventions that address alcohol outlet related factors.

Adolescent↗
PubMed2002

[Homicide progression per geographical area in the State of Pernambuco, Brazil, 1980-1998].

OBJECTIVE: To analyze the magnitude and growth of homicides among male population according to the geopolitical areas. METHODS: An ecological study including a time series analysis was carried out among 15 to 49 year-old males living in the state of Pernambuco, Brazil. Mortality data was collected from the Ministry of Health's Mortality Information System. Data on population was from the 1980 and 1991 censuses and the 1996 Brazilian Institute of Geography and Statistics' census. For inter-census years, the population size was estimated by interpolation, and for the period 1997-1998 it was estimated by projection, using the geometric method. Statistical analysis was performed using mobile mean and regression analysis techniques. RESULTS: In the 1980s, the greatest increase in homicide rates was in the state capital (390%). In the 1990s, the greatest increase occurred in the metropolitan region (68.5%) suggesting violence spread from the capital to other municipalities of greater Recife. Homicide rates tended to grow linearly in the interior, whilst there was an exponential growth in the capital and metropolitan region. A striking feature is the high rates of homicides with firearms in the three areas. CONCLUSIONS: The progression of homicides in the three areas of study shows a characteristic increase. It should be stressed that even though it is the same phenomenon - male homicides -, the generating dynamic of this process has geographical particularities between more urban and interior areas and they should be taken into account while developing local policies for supporting victims and preventing these events.

Adolescent↗
PubMedDate not supplied

[Male homicide in the Metropolitan Region of São Paulo between 1979 and 1998: a pictorial approach].

Homicide has become a major social problem in Brazil in the last two decades. In Greater Metropolitan São Paulo, Southeast Brazil, the proportional incidence of male homicides increased from 35 to 121 (x 10-5) from 1979 to 1998. This study presents the trend in this phenomenon using a set of three-dimensional figures. We show both the absolute number and proportional incidence of male deaths by homicide and the natural logarithm of the male/female relative risk of homicide for Greater Metropolitan São Paulo from 1979 to 1998. Seven 3D figures show the homicide trend by age, sex, and year. The figures show the main trends in homicide distribution in the male population during the study period: a clear predominance among adolescents and young adults, a systematic and sharp increase in that same age range, a systematic spread to the lower (below-18) and higher (above-30) age groups, and a non-negligible incidence above the age of 40.

Adolescent↗
PubMed1986

A study of homicides in Manhattan, 1981.

There were 573 persons murdered in Manhattan (New York) during 1981 for an overall rate of 40.5 per 100,000 population. The male, young, and Black or Latino populations were at higher risk of being homicide victims. For male victims, the homicides were the result of disputes in 37.6 per cent of the cases, drug-related activities in 37.6 per cent, and robbery and other criminal activities in 24.8 per cent of cases. For female victims, homicides resulted from disputes in 62.2 per cent of cases, drug-related activities in 13.8 per cent, and robberies in 20.0 per cent of cases. The observed proportion of homicides related to drug and other criminal activities was higher than has been reported previously in the United States. The role of alcohol continued to be important in homicides related to disputes. The authors stress the importance of differentiating drug-related homicides from those associated with other criminal activities.

Adolescent↗
PubMed1987

Workplace homicides of Texas males.

A review of Texas death certificates for 1975-84 identified 779 civilian males whose deaths were homicides that occurred in the workplace. Injuries from firearms caused 81 per cent of the deaths. The overall rate of workplace homicide was 2.1/100,000 male workers/year. Males employed in taxicab service had the highest rate of workplace homicide. 78.2/100,000 male workers/year. Males employed in certain retail trade industries, law enforcement, and the private-security industry also had high rates of workplace homicide. Male workers greater than or equal to 65 years old were at especially high risk, with a workplace-homicide rate 3.5 times that of younger workers. A review of medical examiners' records in five urban counties indicated that 32 per cent of victims who had worked in eating-and-drinking places and 5 per cent of other workers had blood or cerebrospinal-fluid alcohol levels greater than or equal to 0.10 g/dl. These results provide a base for designing effective strategies to prevent workplace homicides.

Adolescent↗
PubMed1991

Female homicides in United States workplaces, 1980-1985.

BACKGROUND: Women, while noted for low occupational injury mortality rates, are more likely to die as victims of assault than from any other manner of injury at work. METHODS: From the National Traumatic Occupational Fatality surveillance data, 950 women were identified who were fatally assaulted at work. Homicide rates were calculated for the demographic and employment characteristics of these women. Risk ratios among types of lethal injuries were examined. RESULTS: During 1980-1985, the crude six-year workplace homicide rate was 4.0 deaths per million working women: one twentieth the homicide rate of the US female population. Decedents ranged from 16 years (the lowest age included in the data base) to 93 years of age. Working women older than 65 years had the highest age-specific homicide rate, 11.3 per million. Women younger than 20 had the lowest, 2.5 per million per year. Homicide rates for women of races other than White were nearly twice as high as those of Whites. The leading causes of death were gunshot wounds (64 percent), stabbings (19 percent), asphyxiations (7 percent), and blunt force trauma (6 percent). Nearly 43 percent of the deceased women had been employed in retail trade: 8.7 per million employed women annually. CONCLUSIONS: During 1980-1985, only 6 percent of the nation's victims of work-related injury deaths were female: 41 percent of those women were murdered. Homicide is currently the leading manner of traumatic workplace death among women in the United States.

Accidents, Occupational↗
PubMed1998

News media coverage and the epidemiology of homicide.

OBJECTIVES: This study assessed how newspaper coverage of homicides corresponds to the epidemiology of homicide. METHODS: Stories in the Los Angeles Times about homicide (n = 2782) were compared with the homicides that occurred in Los Angeles County from 1990 through 1994 (n = 9442). The generalized linear model assessed how victim, incident, and suspect characteristics related to coverage. RESULTS: Even when multiple variables were taken into account, some homicides (those with female, child, or elderly victims; those in which the suspect was a stranger to the victim; those in wealthier neighborhoods) received more coverage and others (those with Black or Hispanic victims or victims with less than a high school education; those committed with nonfirearm weapons; those in which the suspect was an intimate of the victim) received less coverage than expected. CONCLUSIONS: Some homicides are more newsworthy than others. Potential implications of not providing the public with representative data are discussed.

Adolescent↗