Cluster analysis of child homicide in South Korea

Child and adolescent victims of sexual homicide in Chile between 1998 and 2021: A review of 27 cases and their autopsy reports

Rape followed by murder against children and adolescents is one of the most serious existing crimes. The autopsies of victims of violent crimes can provide fundamental findings for the investigative process and the pursuit of justice. This research conducts a descriptive analysis of the most important findings from the autopsies of 27 cases of children and adolescents who died in Chile between 1998 and 2021 as a result of rape followed by homicide (n = 27), as well as from the judiciary rulings of these cases to gather information related to the perpetrators. It was found that the victims of this crime are mostly girls with an average age of 10, while the perpetrators are primarily single men aged 29 on average, most of whom have not finished high school. A significant relationship was found between the location of the crime and the cause of death and signs of sexual contact, the marital status of the perpetrator and the cause of death, the age of the perpetrator and signs of sexual contact, and the relationship between victim and perpetrator and signs of sexual contact.

Intentional child and adolescent homicides in Milan (Italy): A 30-year interdisciplinary study

This study aims to discuss the forensic and criminological implications of child homicides in the territory of Milan, Italy. The authors present a retrospective study on all the cases of child and adolescent homicides, that were observed at the Institute of Legal Medicine of Milan (Italy) in the last 30 years (from January 1991 to December 2020). A total of 46 child homicides were collected, focusing on the sociological features, by highlighting peculiar cases, risk factors, potential changing social trends, and comparing our cases with the current literature. The analysis revealed a statistically significant relationship (p < 0.05) for male adolescents and indicated that adolescent homicides were more frequently perpetrated in extrafamilial contexts. In contrast, neonaticides and infanticides were mainly committed at home. Furthermore, the Fisher's Exact test revealed that child murders were mainly committed by immigrants in the Milan district after 2005 (p < 0.05). The two main causes of death were due to sharp and firearm injuries. While the relationship between homicide clusters and homicides committed by sharp objects was not significant, adolescent homicides were mainly committed using firearms (p < 0.05). The present study may help to identify risk factors for homicides against child and adolescent. Consequently, policies that identify, prevent, and minimize this extreme violence should be designed to interrupt the vicious circle of such dreadful murderous events. Child and adolescent homicides deserve additional focus and better education for healthcare professionals and further research should be carried out to develop therapeutic and caring strategies.

A Descriptive Study of the Characteristics of Homicide-Suicide in Forensic Autopsy Cases

Homicide followed by suicide (HS) is a tragic event with varied characteristics across countries and regions. Compared to Western countries, there are limited studies on HS in Asian countries. Therefore, this study aimed to clarify the characteristics of recent HS cases by examining forensic autopsy records from 2008 to 2020 collected from the Department of Legal Medicine, Chiba University, in Japan. A total of 77 HS cases were identified, involving 77 perpetrators (52 completed suicides, 25 attempted suicides), with 28 perpetrator and 89 victim autopsies. Our findings showed that older adults accounted for nearly half of the victims; victims were mostly females, whereas most perpetrators were male. The most common HS relationship was that between a parent and a child. Autopsy findings showed that the most common cause of death was strangulation, and illegal drugs were detected only in a few cases; however, psychotropic drugs were detected in child victims. No obvious evidence of past child physical abuse by caregivers was found. In contrast, intimate partner violence (IPV) was present, with a history of IPV found in half of HS cases involving adult intimate partner relationships. Notably, gender differences in age and relationship to the victim were identified. Likewise, some perpetrators may have expressed their plans and intentions for HS before the event, which may represent an important sign for HS prevention. However, to accurately reveal the course of HS, nationwide integrated statistics, forensic autopsies, including toxicological analyses of the deceased; and forensic psychiatric perspectives, including psychological autopsy, are required.

Medicolegal study of Egyptian suspicious childhood deaths during 2020-2021

BACKGROUND

Pediatric autopsy is an effective tool for identifying the cause and the manner of death in suspicious childhood deaths.

AIM OF THE STUDY

To explore the pattern of suspicious childhood deaths during the recent years (2020-2021) in the Egyptian community and to identify the risk factors to avoid them during the childhood period.

SUBJECTS AND METHODS

One hundred and fifty Egyptian suspicious child death cadavers (less than 18 years old) were autopsied in Zeinhom Morgue during one-year period (2020-2021). Demographic data, circumstances of death, causes and manner of death were defined and statistically analyzed.

RESULTS

Identity was known in 77.3% of the studied cases, and male to female ratio was 2.2:1. Most of cases were recruited from Cairo and Giza governorates. Adolescents contributed to about one third of the cases. Deaths at home or in hospital were more than outdoor deaths. Seasonal variation was observed as more cases were autopsied during spring and summer. Homicidal deaths (32%) were more in toddlers and adolescents mostly by blunt trauma (58.3%) with signs of violence and resistance or child abuse, mainly in males. The perpetrator was known to be a family member in more than half of the studied cases (56.25%). Accidental deaths (17.3%) were mainly by firearm injuries or poisoning. Suicidal deaths (13.3%) were represented more in adolescents by hanging or by aluminum phosphide poisoning. Natural deaths (13.3%) by bronchopneumonia or leukemia were found in neonates and adolescents. Sudden infant death syndrome (SIDS) (6.7%) was diagnosed by exclusion among neonates and infants only during spring, with equal gender distribution (1:1). Malpractice (6%) leads to death by sepsis or hemorrhage.

CONCLUSIONS

All manners of death contribute to suspicious death during childhood period, especially during summer and spring. Family members are the perpetrator for most of accidental, homicidal or suicidal deaths.

RECOMMENDATIONS

Training courses are recommended to parents for proper care and protection of their children to avoid violence, abuse and accidents at home or outdoor.

Maternal socioeconomic position and inequity in child deaths: An analysis of 2012 South Korean birth cohort of 466,636 children

Background

Inequalities in child mortality occur via interactions between socio-environmental factors and their constituents. Through childhood developmental stages, we can observe changing patterns of mortality. By investigating these patterns and social inequalities by cause and developmental stage, we aim to gain insights into health policies to reduce and equalize childhood mortality.

Methods

Using vital statistics, we examined the Korean birth cohort of 2012, including all children born in 2012 up to five years of age (N = 466,636). The dependent variables were all-cause and cause-specific mortality by developmental stage (i.e., neonatal, post-neonatal, and childhood). A Cox proportional hazard regression model was built to compare child mortality according to maternal education. The distribution of inequalities in cause-specific mortality by child age was calculated using the slope index of inequality (SII).

Results

Inequalities in child mortality due to maternal education occur during the neonatal period and increase over time. After adjusting for covariates, the Cox proportional hazard models showed that "injury and external causes" (HR = 2.178; 95% CI = [1.283-3.697]) and "unknown causes" (HR = 2.299; 95% CI = [1.572-3.363]) in the post-neonatal period, and "injury and external causes" (HR = 2.153; 95% CI = [1.347-3.440]) in the childhood period significantly contributed to socioeconomic inequalities in child mortality. For each period, the leading causes of inequality were identified as follows: "congenital" (96.7%) for the neonatal period, "unknown causes" (58.2%) and "injury and external causes" (28.4%) for the post-neonatal period, and "injury and external causes" (56.5%) for the childhood period.

Conclusion

We confirmed that the main causes of death in mortality inequality vary according to child age, in accordance with the distinctive context of child development. Strengthening the health system and multisectoral efforts that consider families' and children's needs according to spatial contexts (e.g., home, community) may be necessary to address the social inequalities in child health.

Child Homicide Amounting to Murder in Malaysia: Descriptive Analysis of the Statistics and Causes

Objective

To describe the child homicide rates and examine the circumstances of homicides of children in Malaysia from January 2010 to June 2021.

Methods

This is a retrospective secondary analysis of police records on child homicides in Malaysia. Background demographic characteristics of victims, suspected offenders, motives of homicide, and rates of child homicide in Malaysia were analyzed descriptively.

Results

Three hundred thirty-two child homicide cases involving 349 children aged 18 years old and below by 458 suspected offenders were described. The Malaysian rates of child homicide from 2010 to 2018 fluctuated between 0.28 and 0.37 per 100,000 population of children aged 18 and below. The rates show decreasing trend to 0.19 and 0.17 per 100,000 population of children aged 18 in 2019 and 2020, respectively. Most of the victims were Malay and Indians, boys, aged 0–5 years old and 16–18 years old. Offenders were likely to be someone known to the victims, including parents, stepparents, and friends, and have unstable incomes. The main possible motives of homicide are jealousy and revenge, child abuse, and feeling distress.

Conclusion

The rates of child homicide in Malaysia are lower compared to other countries and show decreasing trend during this COVID-19 pandemic. These findings perhaps are underestimated and should be cautiously interpreted. Nevertheless, the results should inform immediate intervention to target the at-risk groups.

Comparison analysis of Euclidean and Gower distance measures on k-medoids cluster

K-medoids clustering uses distance measurement to find and classify data that have similarities and inequalities. The distance measurement method selection can affect the clustering performance for a dataset. Several studies use the Euclidean and Gower distance as measurement methods in numerical data clustering. This study aims to compare the performance of the k-medoids clustering on a numerical dataset using the Euclidean and Gower distance. This study used seven numerical datasets and Silhouette, Dunn, and Connectivity indexes in the clustering evaluation. The Euclidean distance is superior in two values of Silhouette and Connectivity indexes so that Euclidean has a good data grouping structure, while the Gower is superior in Dunn index showing that the Gower has better cluster separation compared to Euclidean. This study shows that the Euclidean distance is superior to the Gower in applying the k-medoids algorithm with a numeric dataset.