2026-05-19 カリフォルニア大学バークレー校（UCB）
Annual age-adjusted rates of assault injuries by race and ethnicity show that Black women under age 65 were at the highest risk of violence. Across all ages, assault injury rates among Black women were 3.8 times those of white women.
＜関連情報＞
- https://news.berkeley.edu/2026/05/19/violence-against-women-remains-high-particularly-for-marginalized-groups/
- https://www.ajpmonline.org/article/S0749-3797(26)00093-0/abstract
- https://jamanetwork.com/journals/jamapediatrics/fullarticle/2832665
カリフォルニア州における女性の暴行による負傷の傾向と格差（2005年～2022年） Trends and Disparities in Assault Injuries Among Women in California 2005–2022
Emily F. Liu, MPH ∙ Shelley Jung, PhD, MSPH ∙ Mahasin S. Mujahid, PhD, MS ∙ Rachel Morello-Frosch, PhD, MPH ∙ Jennifer Ahern, PhD, MPH
American Journal of Preventive Medicine Published:March 26, 2026
DOI:https://doi.org/10.1016/j.amepre.2026.108350
Abstract
Introduction
Women account for more than half of nonfatal violent victimizations and one-fifth of homicides in the U.S., with variation by age and race and ethnicity. Although disparities in violence against women are well-documented, temporal trends within these subgroups are understudied. This study quantifies state-level rates of violence against women in California from 2005 to 2022 by age and race and ethnicity.
Methods
Statewide inpatient and emergency department hospital discharge data, along with death records from California from 2005 to 2022, were analyzed in 2025. Assault injuries were identified using diagnostic codes and categorized by fatality and firearm involvement. Age-adjusted and age-specific rates were calculated per 100,000 person-years using census population denominators. Rates were examined annually and aggregated over the study period. Rate ratios were used to compare assault injury rates by race and ethnicity and over time.
Results
Over the study period, Black women aged 20–24 years had the highest assault injury rate (2,174.96 per 100,000 person-years; 95% CI=2,151.17, 2,198.75). Among women <65 years, rates were highest among Black women, whereas among those aged 65 years and older, rates were highest among multiracial women. Across all ages, assault injury rates among Black women were 3.82 times those of White women (95% CI=3.71, 3.93), followed by American Indian (RR=1.62, 95% CI=1.55, 1.70) and multiracial women (RR=1.48, 95% CI=1.41, 1.56). Black women experienced higher annual assault injury rates compared with other groups throughout the study period. Across all racial and ethnic groups, assault injury rates in 2022 exceeded those in 2005, after a decline in 2020.
Conclusions
Assault injury rates among women in California remain high and exhibit persistent racial and ethnic disparities over time. The results suggest limited progress in violence prevention, with the largest impacts on marginalized racial and ethnic groups that are most heavily burdened by assault injuries.
青少年における非致死性自傷行為のパターン Patterns in Nonfatal Self-Harm Among Adolescents
Emily F. Liu, MPH; Ellicott C. Matthay, PhD; Kriszta Farkas, PhD;et al
JAMA Pediatrics Published:April 14, 2025
DOI:10.1001/jamapediatrics.2025.0283
Research has documented an increase in nonfatal self-harm among US adolescents since 2010.1-3 Females experience a higher burden of self-harm and greater increases over time than males.2,3 Sex, age, and race and ethnicity are important social identity dimensions and intersect to shape exposure to self-harm risk factors.4 However, patterns within these subgroups have not been examined. We describe nonfatal self-harm rates among US adolescents, focusing on the intersections of age, sex, and race and ethnicity.
