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Workplace violence: female occupational homicides in metropolitan Chicago.

Homicide is the leading cause of fatal occupational injuries for women and accounts for 39% of all fatal injuries for women at work. Using medical examiner and coroner reports, this study analyzed female workplace homicides in three counties within metropolitan Chicago from 1984 to 1990. These workplace homicides were compared to non-workplace homicides of women. There were 1,354 female homicides; of the 17 workplace homicides, all occurred in Cook County. The annual rate of female occupational homicides was higher (1.5/10(5)) for Cook County, while for the metropolitan Chicago area (Cook, DuPage, and Lake counties) it was 1.19/10(5). Black women experienced a higher workplace homicide rate (2.3/10(5)) than white women (1.2/10(5)). Most of these occupational homicides occurred in retail trade, predominately in eating and drinking establishments; robbery was a frequent occurrence, and the women often worked alone. Only three medical examiner reports cited a known assailant. The leading cause of death was from gunshot wounds. Workplace homicides were similar to non-workplace homicides in relation to age, race, and cause of death. Identified risk factors associated with workplace homicides, as well as non-fatal assaults, should be used to develop effective preventive measures. A national standard for general workplace security also is needed.

Adolescent↗

Previous emergency department use among homicide victims and offenders: a case-control study.

STUDY OBJECTIVE: We differentiate risk factors for future homicide victimization and offending, and we measure emergency department (ED) use among homicide victims, offenders, and controls. METHODS: The design was a matched case-control study conducted in Bernalillo County, NM, and its university-affiliated health sciences center and hospital. All Bernalillo County homicide victims (N=124) and offenders (N=138) identified between January 1996 and December 2001 who were linked to university physician billing records and who had health care use during the 3 years before the homicide incident were included as cases. Randomly selected age-matched (+/-1 year) and sex-matched subjects with health care use within 3 years of their matched pair's homicide were included as controls. Main outcome measures were the number and type of ED visits by cases and controls. RESULTS: Among the 124 victims and 138 offenders who used health care, most were men (80%) and averaged 27.7 years of age. Victims and offenders had similar health care use and were grouped for final analyses. Cases (victims and offenders) were more likely to have had an ED visit within 3 years of the homicide (85%) compared with controls (59%) (odds ratio [OR] 4.3; 95% confidence interval [CI] 3.0 to 6.2). Within previous ED visits, assault (OR 4.5; 95% CI 2.9 to 7.0), firearm injury (OR 13.6; 95% CI 4.9 to 37.7), and substance abuse (OR 3.7; 95% CI 2.2 to 6.0) were associated with future homicide. ED visits clustered closer to the homicide incident for cases (median days before the homicide -402 days; 95% CI -434 to -364) compared with controls (median -487 days; 95% CI -498 to -474). CONCLUSION: Patients with ED visits for assault, firearm injuries, and substance abuse are at increased risk for homicide and often have an escalating number of visits leading up to the homicide event. ED-based identification and referral programs similar to those used for intimate partner violence or other preventive strategies should be considered for this high-risk population.

Adolescent↗

Violence in Jamaica: an analysis of homicides 1998-2002.

The aim of the study was to create a profile of Jamaican homicide victims and to describe the circumstances, motives, and the weapons used in homicide incidents. The authors read the police narratives for all Jamaican homicides 1998-2002 and coded them using a predetermined set of variables. Analyses were conducted to describe victim characteristics, motive, and weapon use. The majority of homicide victims were male (over 89%), and 15-44 years old (80%). The rate of homicide for males age 15-44 years was 121 per 100,000 compared with a rate of 12 per 100,000 for females in the same age group. The main motives for homicide were disputes (29%) and reprisals (30%). Gunshot wounds were the cause of death in 66% of all homicides. Guns were used primarily in reprisals, robbery, and drug/gang related homicides; in half of all dispute related homicides the perpetrator used a knife. Homicides in Jamaica are not primarily gang or robbery related. Rather, they are mainly caused by arguments or reprisals. Homicide has become a common feature of dispute resolution in Jamaica.

Adolescent↗

Homicide: drinking by the victim.

A comparison was made between homicides in which the victim had either been drinking or had not been drinking. Medical examiner records for 792 homicides in Erie County, New York from 1972 through 1984 were used. A logistic regression found that in a significantly higher proportion of certain types of homicides there was alcohol in the victim's blood: male victims, victims aged 30-49, homicides that occur in the warmer months and in the evening or at night, homicides not related to another crime, stabbings, and homicides that take place in bars and restaurants. Some circumstances associated with a very high likelihood of alcohol in the victim's blood were: men killed at night, men killed by women, black male victims and all killings on Saturday or Sunday nights. These results suggest that a high likelihood of alcohol in victims is associated with circumstances that make drinking more likely (e.g., male victims, homicide at night), but also alcohol is more likely present in homicides that arise spontaneously from personal disputes. It was also found that there is a higher likelihood of alcohol in the victim for homicides that occur during time periods when there are more homicides. It is suggested that in some cases the alcohol may be a causal factor in the homicide.

Adult↗

Couple age discrepancy and risk of intimate partner homicide.

Although national level studies in the United States and Canada find that extreme partner age discrepancy is a risk factor for intimate partner homicide in opposite-sex couples, these studies carry two caveats: They are limited to cohabiting marital or common-law couples and they are not detailed enough to explore alternative explanations for the age discrepancy-homicide risk association. Using the Chicago Homicide Dataset, which includes all homicides that occurred in Chicago from 1965 to 1996, we analyze the 2,577 homicides in which the victim was killed by a current or former legal spouse, common-law spouse, or heterosexual boyfriend or girlfriend, and in which the woman was at least 18 years of age. Within each of 14 categories of couple age discrepancy, we estimate the population of intimate heterosexual couples and calculate the population-based risk of homicide. The results replicate national level findings showing that the risk of intimate partner homicide is considerably elevated for couples with a large discrepancy between their ages-where the man is at least 16 years older than the woman or the woman is at least 10 years older than the man. This risk pattern occurs regardless of whether the man or the woman was the homicide offender. We then investigate whether the link between partner age discrepancy and homicide risk is explained by the offender's arrest record. Results show that the higher risk of intimate partner homicide for age discrepant couples is robust, and does not depend on the previous arrest record of the offender. Discussion addresses other possible explanations for the increased risk of partner homicide for age discrepant couples, and the practical implications of these findings.

Adolescent↗

Work-related homicides among seafarers and fishermen.

OBJECTIVE: To analyse work related homicides among various defined populations of seafarers and fishermen during the period 1976-2002, to compare homicide rates with other occupations and general populations, and to discuss implications for maritime health and safety. METHODS: A longitudinal study of work related homicides, based on official mortality files, with an aggregated population of almost two million seafarer-and fishermen-years at risk. RESULTS: Of 46 work related homicides, 44 occurred among seafarers, and two among fishermen. Homicide rates were 1.5 per 100,000 worker-years among seafarers in British merchant shipping (1976-2002), 2.9 per 100,000 among British seafarers employed in non British shipping (1986-95), 3.7 in Singapore shipping (1984-95) and in Hong Kong shipping (1981-95), and 0.4 among fishermen in British fishing (1976-2002). The homicide rate in British shipping increased from 2.7 per 100,000 seafarer-years in 1961-65 to 4.4 per 100,000 in 1971-75, but has declined to 0.0 in 1996-2002. CONCLUSIONS: Although work related homicides were generally quite rare occurrences, among British seafarers and fishermen, they were largely caused by attacks from assailants, other than colleagues, that occurred ashore. The decline in the homicide rate in British shipping since the 1970s has coincided with the reduction in deep-sea ships trading to high risk countries for homicide. Among Asian seafarers, most homicides resulted from disputes among colleagues that mainly occurred on board ships. Prevention should include alertness to potential risks when spending off-duty time ashore in locations with high homicide rates, and conflict resolution for disputes among seafarers.

Adult↗

Trends in rates of homicide--United States, 1985-1994.

During 1993, a total of 26,009 homicides were reported in the United States; 71% were firearm-related, and one third of all homicides occurred among persons aged 15-24 years . Since 1985, national homicide rates have increased sharply, especially firearm-related homicides and homicides among persons aged 15-24 years. However, based on data from the Supplementary Homicide Report compiled by the Federal Bureau of Investigation and reports from some cities, homicide rates have been stable or declining since 1993. To examine this trend and to assess the relative contributions of firearm- and nonfirearm-related homicide to these recent changes, CDC analyzed national vital statistics data for 1985-1994. This report summarizes this analysis, which indicates that overall rates of homicide increased from 1985 to 1991 and decreased from 1992 to 1994, and that during these two periods, rates for total firearm-related homicides and homicide among persons aged 15-24 years increased then stabilized but remained at record-high levels.

Adolescent↗

Relationships of US youth homicide victims and their offenders, 1976-1999.

BACKGROUND: Homicide is the second leading cause of death in children aged 0 to 19 years. Tailoring violence prevention programs to high-risk individuals requires understanding victim-offender relationships. OBJECTIVE: To elucidate differences in the relationships between homicide victims aged 0 to 19 years and their offenders. DESIGN: Cross-sectional study using the Uniform Crime Reports: Supplemental Homicide Reports, 1976-1999. SETTING AND PARTICIPANTS: The Supplemental Homicide Reports contain incident-level information about criminal homicides, including location and victim and offender characteristics. National coverage is approximately 92%; 70 258 victims were studied. MAIN OUTCOME MEASURES: Differences in the relationships of homicide victims and offenders based on sex, age, population of homicide location, and weapon. RESULTS: Odds ratios and 95% confidence intervals (CIs) are reported. Using strangers as the referent group, murdered girls were 3.6 (95% CI, 3.4-3.9) times more likely to have been killed by family members and 21.3 (95% CI, 18.5-24.4) times more likely to have been killed by intimate partners than murdered boys. Victims younger than 10 years were 33 (95% CI, 30.4-36.1) times more likely than victims older than 10 years to have been killed by a family member and 2.4 (95% CI, 2.2-2.6) times more likely to have been killed by someone else known to them. Stranger homicides occurred in areas with approximately 145 000 more residents (P<.01). Handguns were more likely to be used during homicides committed by strangers (P<.01). These associations remained after adjusting for potential confounders. CONCLUSIONS: Future violence prevention programs may have more effect when targeted to specific sex and age groups. Elucidation of the origins of sex differences, focus on evidence-based child abuse prevention efforts, and enforcement of current gun control laws may help reduce the number of homicides among children.

Adolescent↗

Site of entrance wound and direction of bullet path in firearm fatalities as indicators of homicide versus suicide.

In a retrospective study, 288 firearm deaths were analysed to identify factors indicating homicide. The cases were classified as suicides (213), homicides (54), accidents (14) and undetermined cases (7). A number of factors, related to the circumstances and the autopsy findings, were studied. Whereas 41% of the homicide victims were females, women only constituted 1.4% of the suicide victims. The mean age was 37 and 50 years among homicide and suicide victims, respectively. Most suicides were committed at or in the vicinity of the residence, whereas a majority of the homicides occurred elsewhere. The majority of the suicide victims had either left a suicide note or had medical records of previous psychiatric illness. In all groups, shotguns were the most frequent weapon used. Fifty-seven percent of the homicide victims, but only three percent of the suicide victims had sustained more than one gunshot wound. One-third of the homicide victims were shot at close range. Alcohol was present in one-third of both homicide and suicide victims. Whereas 38% of the homicidal gunshot wounds had their entrances at anatomical regions typical of suicide, the direction of the bullet path often differed from the directions recorded in suicides. Hence, in this material, an entrance wound in the right temple indicated suicide, but in combination with a direction back-to-front, the wound was more likely to be homicidal. This study suggests that an estimation of the direction of the internal bullet path should be conducted in firearm fatalities, and that this factor may assist in the determination of the manner of death.

Accidents↗

Effects of restrictive licensing of handguns on homicide and suicide in the District of Columbia.

BACKGROUND: Whether restricting access to handguns will reduce firearm-related homicides and suicides is currently a matter of intense debate. In 1976 the District of Columbia adopted a law that banned the purchase, sale, transfer, or possession of handguns by civilians. We evaluated the effect of implementing this law on the frequency of homicides and suicides. METHODS: Homicides and suicides committed from 1968 through 1987 were classified according to place of occurrence (within the District of Columbia or in adjacent metropolitan areas where the law did not apply), cause (homicide or suicide), mechanism of death (firearms or other means), and time of occurrence (before or after the implementation of the law). The number of suicides and homicides was calculated for each month during the study period, and differences between the mean monthly totals before and after the law went into effect were estimated. RESULTS: In Washington, D.C., the adoption of the gun-licensing law coincided with an abrupt decline in homicides by firearms (a reduction of 3.3 per month, or 25 percent) and suicides by firearms (reduction, 0.6 per month, or 23 percent). No similar reductions were observed in the number of homicides or suicides committed by other means, nor were there similar reductions in the adjacent metropolitan areas in Maryland and Virginia. There were also no increases in homicides or suicides by other methods, as would be expected if equally lethal means were substituted for handguns. CONCLUSIONS: Restrictive licensing of handguns was associated with a prompt decline in homicides and suicides by firearms in the District of Columbia. No such decline was observed for homicides or suicides in which guns were not used, and no decline was seen in adjacent metropolitan areas where restrictive licensing did not apply. Our data suggest that restrictions on access to guns in the District of Columbia prevented an average of 47 deaths each year after the law was implemented.

Cause of Death↗

Offender-victim relationships in criminal homicide followed by offender's suicide, North Carolina, 1972-1977.

An analysis of 90 cases of criminal homicide followed by suicide in North Carolina, 1972 to 1977. Homicidal victim-offender relationships were investigated in regard to age, sex, race and whether victim and offender were member of the same family, friends, acquaintances, or strangers. These results were compared with victim-offender relationships in 994 criminal homicide cases in North Carolina in which offenders did not commit suicide. Married white males over 30 years were much more involved in homicide-suicide than they were in homicide alone. In these homicide-suicide cases, the victim was usually the spouse. Except for marital status, characteristics of homicide offenders who killed themselves resembled those of suicide-only individuals much more than those of homicide-only offenders. In the homicide-suicide cases, the killing of someone in close relationship to the offender, often a wife, appeared to be part of the evolving process of suicide. This clearly has implications for intervention into marital strife and also for immediate treatment of homicide offenders who kill spouses and other family members.

Adolescent↗

Seasonal variation in the occurrence of homicide in Finland.

OBJECTIVE: Although seasonal variation in impulsive aggression related to circannual rhythms of central serotonin neurotransmission is a topic of current interest, there is little firm knowledge on seasonality in the occurrence of homicide. Longitudinal studies on the seasonal rhythms of platelet imipramine binding and L-tryptophan levels have placed the circannual peaks around January and February and the nadirs around May and August. The aim of this study was to test the hypothesis that the number of homicides is the lowest during winter and the highest during spring and summer. A secondary hypothesis was that the seasonal variations in homicides and violent suicides are correlated. METHOD: The largest database on the monthly occurrence of homicide thus far (N = 4,553) was used in this study, in which the monthly occurrence of all murders and manslaughters in Finland during the years 1957-1995 was analyzed. RESULTS: During winter the homicide rate was 6% below the expected rate. Correspondingly, during summer there was a 6% elevation above the expected homicide rate, but no significant peak was observed in spring. There was a significant association between the monthly occurrence of homicides and violent suicides but not between homicides and nonviolent suicides. CONCLUSIONS: The results suggest that a seasonal variation in the occurrence of homicide exists. On the basis of current literature, it could be hypothesized that this seasonal variation and the correlation between the monthly occurrence of homicides and violent suicides are associated with the observed circannual rhythms of serotonin transmission.

Biomarkers↗

Death by homicide in Italy, 1980-94: age and gender differences among victims.

To investigate the role of sociodemographic factors in the risk of death by homicide in Italy, official statistics from 1980 to 1994 concerning death by homicide have been studied. Homicide rates increase from 1980 to 1994 for males and, to a much lesser extent, for females. Clear differences exist by age and gender, with rates peaking in both genders at young adult age (25-34) and men having five times higher rates than women. Mean rate in the general population is 1.98 per 100,000, one of the highest rates in the civilized world. These findings are mostly influenced by higher homicide rates for both males and females in southern regions, where cultural attitudes towards violence, linked to the greater diffusion of criminal organizations, greatly influence the risk of death by homicide. About 75% of homicides involve firearms: clearly in Italy availability of lethal weapons is a key factor in homicide. Intervention aimed at increasing community awareness of the causes and methods of prevention of violence (including the roles of substance abuse and social inequality) are needed if adequate policies are to be developed to reduce the risk of death by homicide. Differences in homicide rates across countries clearly indicate that homicide is a preventable cause of death.

Adolescent↗

Homicide and mental illness in New Zealand, 1970-2000.

BACKGROUND: Homicides by mentally ill persons have led to political concerns about deinstitutionalisation. AIMS: To provide accurate information about the contribution of mental illness to homicide rates. METHOD: Retrospective study of homicide in New Zealand from 1970 to 2000, using data from government sources. 'Mentally abnormal homicide'perpetrators were defined as those found unfitto stand trial, not guilty by reason of insanity, convicted and sentenced to psychiatric committal, or convicted of infanticide. Group and time trends were analysed. RESULTS: Mentally abnormal homicides constituted 8.7% of the 1498 homicides. The annual rate of such homicides was 1.3 per million population, static over the period. Total homicides increased by over 6% per year from 1970 to 1990, then declined from 1990 to 2000. The percentage of all homicides committed by the mentally abnormal group fell from 19.5% in 1970 to 5.0% in 2000. Ten percent of perpetrators had been admitted to hospital during the month before the offence; 28.6% had had no prior contact with mental health services. Victims were most commonly known to the perpetrator (74%). CONCLUSIONS: Deinstitutionalisation appears not to be associated with an increased risk of homicide by people who are mentally ill.

Adolescent↗

[Social inequality and homicide rates in Sao Paulo City, Brazil].

OBJECTIVE: The relation between income and mortality due to violence has been studied in recent years. The Synthesis of Social Indicators of 2002 [Sintese de Indicadores Sociais, 2002], published by The Brazilian Institute of Geography and Statistics (IBGE), states that one of the most outstanding characteristic of Brazilian society is inequality. The proposal of this ecological study was to test the association between homicide rates, and some health and socioeconomic indicators. METHODS: This is an ecological cross-sectional study. Data regarding Sao Paulo City, Brazil in the year 2000 was analyzed. The association between homicide coefficients and the following five indicators were tested: infant mortality rates, monthly average income of household heads, percentage of adolescents aged 15 to 17 years not attending school, proportion of pregnant adolescent women aged 14 to 17 years and demographic density. Pearson's correlation coefficient and a multiple linear regression model were utilized to test these associations. RESULTS: The municipal homicide rate was 57.3/100,000. The correlation between homicide rates and average monthly income was strong and negative (r=-0.65). Higher homicide rates were found in the districts whose inhabitants had lower incomes and lower rates were found in those districts whose inhabitants had higher incomes. The correlation between homicide rates and proportion of adolescents not attending school was positive and strong (r=0.68). The correlation between homicide rates and the proportion of pregnant adolescent women was positive and strong (r=0.67). The correlation between homicides and the rate of infant mortality was r=0.24 (for all: p<0.05). The correlation between demographic density and homicides was not significant. Although the univariate regression was positive for four indicators, the multivariate regression test was only significant for average monthly income (negative) and proportion of adolescents not attending school (positive) (for both indicators: p<0.01). CONCLUSIONS: The findings highlight the problem of homicides and socioeconomic disparities in S. Paulo City. Economic development and reducing socioeconomic inequality may have an impact on the rates of mortality due to violence.

Adolescent↗

Firearm availability and female homicide victimization rates among 25 populous high-income countries.

OBJECTIVE: to determine the association between firearm availability and female homicide victimization among high-income countries. METHODS: Data were assembled for the most recent available year (1994-1999) from the official reports of the ministries of health for those countries that had more than 2 million inhabitants and were dassified as high income by the World Bank. Twenty-five nations provided sufficient information for the analysis. Rates of female victimization from homicide, firearm homicide, and nonfirearm homicide were compared with a validated proxy for household firearm ownership (the percentage of total national suicides that are committed with firearms). Possible confounding variables included in the analysis were the percentage of the population living in urban areas and income inequality. RESULTS: The United States is an outlier. It had the highest level of household firearm ownership and the highest female homicide rate. The United States accounted for 32% of the female population in these high-income countries, but for 70% of all female homicides and 84% of all female firearm homicides. Female homicide victimization rates were significantly associated with firearm availability largely because of the United States. CONCLUSION: Among high-income countries, where firearms are more available, more women are homicide victims. Women in the United States are at higher risk of homicide victimization than are women in any other high-income country.

Adult↗

Homicide surveillance--United States, 1979-1988.

From 1979 through 1988, 217,578 homicides occurred in the United States, an average of greater than 21,000 per year. Homicide rates during this 10-year period were about 1.5 times higher than the rates during the 1950s. The national homicide rate of 10.7/100,000 in 1980 was the highest ever recorded. Homicide occurs disproportionately among young adults. Among the 15- to 34-year age group, homicide is the fourth most common cause of death among white females, the third most common cause among white males, and the most common cause among both black females and black males. In 1988, nearly two-thirds (61%) of homicide victims were killed with a firearm, 75% of these with a handgun. More than half (52%) of homicide victims were killed by a family member or acquaintance, and about one-third (35%) of homicides stemmed from a conflict not associated with another felony. The homicide mortality rate among young black males 15-24 years of age has risen 54% since 1985. Ninety-nine percent of the increase was accounted for by homicides in which the victim was killed with a firearm. The surveillance data summarized in this report should assist public health practitioners, researchers, and policymakers in addressing this important public health problem.

Adolescent↗

Race, socioeconomic status, and domestic homicide.

OBJECTIVE: A study of 222 intraracial domestic homicides in Atlanta, Ga, found that when black and white populations were unstratified, the relative risk of homicide in black populations was 5.8 (95% confidence interval [CI], 4.3 to 8.0); when black and white populations were stratified by rates of household crowding, the relative risk of homicide in black populations was no longer significantly elevated (relative risk [RR], 1.2; 95% CI, 0.7 to 2.0). The current study sought to replicate, or not replicate, these findings in New Orleans, La. METHODS: Retrospective study of 349 intraracial domestic homicides perpetrated against residents of Orleans Parish in 1979, 1982, 1985, and 1986. MAIN OUTCOME MEASURE: Relative risk of homicide in the black and white populations of New Orleans when they are stratified by rates of household crowding. RESULTS: When black and white populations of New Orleans were unstratified, the relative risk of intraracial domestic homicide in black populations was 6.3 (95% CI, 4.3 to 9.5). When black and white populations were stratified by rates of household crowding, the relative risk of homicide in black populations was no longer significantly elevated (RR, 1.2; 95% CI, 0.4 to 2.9). CONCLUSION: The findings of the Atlanta homicide study are replicated in the current study of homicide in New Orleans. In both cities, sixfold differences in black and white rates of intraracial domestic homicide are entirely accounted for by differences in socioeconomic status between the respective black and white populations. There are no significant residual differences requiring cultural explanations.

Black or African American↗