CDC Guidance for Community Response to Suicide Clusters, United States, 2024.

This is the third of three reports in the MMWR supplement that updates and expands CDC's guidance for assessing, investigating, and responding to suicide clusters based on current science and public health practice. The first report, Background and Rationale - CDC Guidance for Communities Assessing, Investigating, and Responding to Suicide Clusters, United States, 2024, describes an overview of suicide clusters, methods used to develop the supplement guidance, and intended use of the supplement reports. The second report, CDC Guidance for Community Assessment and Investigation of Suspected Suicide Clusters, United States, 2024, describes the potential methods, data sources, and analysis that communities can use to identify and confirm suspected suicide clusters and better understand the relevant issues. This report describes how local public health and community leaders can develop a response plan for suicide clusters. Specifically, the steps for responding to a suicide cluster include preparation, direct response, and action for prevention. These steps are not intended to be explicitly adopted but rather adapted into the local context, culture, capacity, circumstances, and needs for each suicide cluster.

Suicidal Thoughts and Behaviors Among High School Students - Youth Risk Behavior Survey, United States, 2021.

Suicide is the third leading cause of death among high school-aged youths aged 14-18 years. The 2021 suicide rate for this age group was 9.0 per 100,000 population. Updating a previous analysis of the Youth Risk Behavior Survey during 2009-2019, this report uses 2019 and 2021 data to examine high school students' reports of suicidal thoughts and behaviors. Prevalence estimates are reported by grade, race and ethnicity, sexual identity, and sex of sexual contacts. Unadjusted logistic regression models were used to calculate prevalence differences comparing 2019 to 2021 and prevalence ratios comparing suicidal behavior between subgroups across demographic characteristics to a referent group. From 2019 to 2021, female students had an increased prevalence of seriously considered attempting suicide (from 24.1% to 30%), an increase in making a suicide plan (from 19.9% to 23.6%), and an increase in suicide attempts (from 11.0% to 13.3%). In addition, from 2019 to 2021, Black or African American (Black), Hispanic or Latino (Hispanic), and White female students had an increased prevalence of seriously considered attempting suicide. In 2021, Black female students had an increased prevalence of suicide attempts and Hispanic female students had an increased prevalence of suicide attempts that required medical treatment compared with White female students. Prevalence of suicidal thoughts and behaviors remained stable overall for male students from 2019 to 2021. A comprehensive approach to suicide prevention with a focus on health equity is needed to address these disparities and reduce prevalence of suicidal thoughts and behaviors for all youths. School and community-based strategies include creating safe and supportive environments, promoting connectedness, teaching coping and problem solving, and gatekeeper training.

Detection of Suicide Clusters using Small-Area Geographic Data from the Virginia Violent Death Reporting System, 2010 - 2015.

Introduction: From 1999 to 2020, the suicide rate in Virginia increased from 13.1 to 15.9 per 100,000 persons aged 10 years and older. Few studies have examined spatial patterns of suicide geographies smaller than the county level. Methods: We analyzed data from suicide decedents aged ≥10 years from 2010 through 2015 in the Virginia Violent Death Reporting System. We identified spatial clusters of high suicide rates using spatially adaptive filtering with standardized mortality ratio (SMR) significantly higher than the state SMR (p < 0.001). We compared demographic characteristics, method of injury, and suicide circumstances of decedents within each cluster to decedents outside any cluster. Results: We identified 13 high-risk suicide clusters (SMR between 1.7 and 2.0). Suicide decedents in the clusters were more likely to be older (40+ years), non-Hispanic white, widowed/divorced/separated, and less likely to have certain precipitating suicide circumstances than decedents outside the clusters. Suicide by firearm was more common in four clusters, and suicide by poisoning was more common in two clusters compared to the rest of the state. Conclusions: There are important differences between geographic clusters of suicide in Virginia. These results suggest that place-specific risk factors for suicide may be relevant for targeted suicide prevention.

Association of Self-Reported Depression and Anger with Law Enforcement Officers' Physical Abuse of Black Men in 4 Georgia Counties, 2011.

INTRODUCTION: The association between the behavioral affect of black men and law enforcement officers' physical abuse of those men is not well-understood. This analysis measures the association between self-reported negative affect behavior (anger or depression) by the men and physical abuse by law enforcement officers, controlling for demographic and behavioral attributes. METHODS: A single point-in-time cross-sectional survey was conducted in 2011 through random-digit telephone dialing among a sample of English-speaking black men aged 18-65 years in 4 Georgia (USA) counties. Associations among the outcomes, self-reported history of physical abuse by law enforcement officers, and the predictor variables of interest (self-reported anger or depression) was conducted through multivariable logistic regression. Other independent variables of interest measured were age; country of origin; parental country of origin; education; income; employment status; previous residency in a juvenile, jail, or prison facility; coping styles; and self-reported gender role and racism stress levels. RESULTS: Of the 633 survey participants who had interacted with law enforcement officers within the past 5 years, 129 (20.4%) reported physical abuse by law enforcement officers. Three factors had statistically significant, independent associations with reported law enforcement officer physical abuse: high levels of depression stratified by often or sometimes coping with stress through anger (adjusted odds ratio [aOR] = 4.9; 95% confidence interval [CI]: 1.4-16.9), previous residency in a jail or prison (aOR = 2.3; 95% CI: 1.8-3.1), and higher levels of exposure to racism (aOR [high levels of racism] = 15.0; 95% CI: 6.7-33.7 and aOR [medium levels of racism] = 6.5; 95% CI: 3.4-12.3). CONCLUSION: Cohort studies are needed to determine if a black man's negative coping style, history of incarceration or exposure to racism is causally related to his history of physical abuse by a law enforcement officer.

Suicidal Ideation and Behaviors Among High School Students - Youth Risk Behavior Survey, United States, 2019.

Suicide is the second leading cause of death among high school-aged youths 14-18 years after unintentional injuries. This report summarizes data regarding suicidal ideation (i.e., seriously considered suicide) and behaviors (i.e., made a suicide plan, attempted suicide, and made a suicide attempt requiring medical treatment) from CDC's 2019 Youth Risk Behavior Survey. Results are reported overall and by sex, grade, race/ethnicity, sexual identity, and sex of sexual contacts, overall and within sex groups. Trends in suicide attempts during 2009-2019 are also reported by sex, race/ethnicity, and grade. During 2009-2019, prevalence of suicide attempts increased overall and among female, non-Hispanic white, non-Hispanic black, and 12th-grade students. Data from 2019 reflect substantial differences by demographics regarding suicidal ideation and behaviors. For example, during 2019, a total of 18.8% of students reported having seriously considered suicide, with prevalence estimates highest among females (24.1%); white non-Hispanic students (19.1%); students who reported having sex with persons of the same sex or with both sexes (54.2%); and students who identified as lesbian, gay, or bisexual (46.8%). Among all students, 8.9% reported having attempted suicide, with prevalence estimates highest among females (11.0%); black non-Hispanic students (11.8%); students who reported having sex with persons of the same sex or with both sexes (30.3%); and students who identified as lesbian, gay, or bisexual (23.4%). Comprehensive suicide prevention can address these differences and reduce prevalence of suicidal ideation and behaviors by implementing programs, practices, and policies that prevent suicide (e.g., parenting programs), supporting persons currently at risk (e.g., psychotherapy), preventing reattempts (e.g., emergency department follow-up), and attending to persons who have lost a friend or loved one to suicide.

How typhoons trigger turbidity currents in submarine canyons.

Intense turbidity currents occur in the Malaylay Submarine Canyon off the northern coast of Mindoro Island in the Philippines. They start in very shallow waters at the shelf break and reach deeper waters where a gas pipeline is located. The pipeline was displaced by a turbidity current in 2006 and its rock berm damaged by another 10 years later. Here we propose that they are triggered near the mouth of the Malaylay and Baco rivers by direct sediment resuspension in the shallow shelf and transport to the canyon heads by typhoon-induced waves and currents. We show these rivers are unlikely to generate hyperpycnal flows and trigger turbidity currents by themselves. Characteristic signatures of turbidity currents, in the form of bed shear stress obtained by numerical simulations, match observed erosion/deposition and rock berm damage patterns recorded by repeat bathymetric surveys before and after typhoon Nock-ten in December 2016. Our analysis predicts a larger turbidity current triggered by typhoon Durian in 2006; and reveals the reason for the lack of any significant turbidity current associated with typhoon Melor in December 2015. Key factors to assess turbidity current initiation are typhoon proximity, strength, and synchronicity of typhoon induced waves and currents. Using data from a 66-year hindcast we estimate a ~8-year return period of typhoons with capacity to trigger large turbidity currents.

Self-Directed Violence After Medical Emergency Department Visits Among Youth.

INTRODUCTION: Identifying medical encounters that precede self-directed violence may allow for important prevention opportunities. This study examined the risk of self-directed violence after visiting the emergency department for a range of physical health conditions among youth. METHODS: This retrospective cohort study used 2012-2013 statewide emergency department data from six states. Among patients aged 15-29 years, the exposure group included 2,192,322 emergency department visits for 16 selected conditions, coded by whether visits for those conditions were the first, second, or third or later visit for that condition. Emergency department visits for a minor infection served as the reference group (n=149,163). A Cox proportional hazard model was used to assess the risk of a self-directed violence event within 6 months for each condition. Analyses were conducted in 2017. RESULTS: Overall, 8,489 (0.4%) of all patients visited the emergency department for self-directed violence over a 6-month period. Initial visits for epilepsy or seizures conveyed a markedly elevated hazard ratio for subsequent self-directed violence at 6.0 and 5.7, respectively (p<0.001). Initial visits for other conditions showed moderately elevated risk with hazard ratios primarily <2. Second visits for various pain symptoms, syncope, vomiting, or non-self-directed violence injury also had a 3- to 5-fold increase in hazard ratios for subsequent self-directed violence. Hazard ratios for third or later visit increased to 8.8 for back pain, 6.9 for headache, about 5 for abdominal pain, dental complaints, and non-self-directed violence injury (p<0.001). CONCLUSIONS: Young people presenting to the emergency department for certain medical conditions are at an increased risk of subsequent self-directed violence. An awareness of these patterns may help guide screening efforts for suicide prevention in clinical settings.

The National Violent Death Reporting System: overview and future directions.

OBJECTIVE: To describe the National Violent Death Reporting System (NVDRS). This is a surveillance system for monitoring the occurrence of homicides, suicides, unintentional firearm deaths, deaths of undetermined intent, and deaths from legal intervention (excluding legal executions) in the US. DESIGN: This report provides information about the history, scope, data variables, processes, utility, limitations, and future directions of the NVDRS. RESULTS: The NVDRS currently operates in 32 states, with the goal of future expansion to all 50 states, the District of Columbia, and US territories. The system uses existing primary data sources (death certificates, coroner/medical examiner reports, and law enforcement reports), and links them together to provide a comprehensive picture of the circumstances surrounding violent deaths. CONCLUSIONS: This report provides an overview of the NVDRS including a description of the system, discussion of its expanded capability, the use of new technologies as the system has evolved, how the data are being used for violence prevention efforts, and future directions.

Suicidal thoughts and attempts among u.s. High school students: trends and associated health-risk behaviors, 1991-2011.

PURPOSE: To describe secular trends in suicidal thoughts and attempts and the types of health-risk behaviors associated with suicidal thoughts and attempts among U.S. high school students. METHODS: Data were analyzed from 11 national Youth Risk Behavior Surveys conducted biennially during 1991-2011. Each survey employed a nationally representative sample of students in grades 9-12 and provided data from approximately 14,000 students. Using sex-stratified logistic regression models that controlled for race/ethnicity and grade, we analyzed secular trends in the prevalence of suicidal thoughts and attempts. Adjusted prevalence ratios (APR) were calculated to measure associations between suicide risk and a broad range of health-risk behaviors. RESULTS: During 1991-2011, among female students, both suicidal thoughts (seriously considered suicide; made a plan to attempt suicide) and attempts (any attempt; attempt with injury requiring medical treatment) decreased significantly; among male students, only suicidal thoughts decreased significantly. During 2011, compared with students with no suicidal thoughts or attempts, the health-risk behaviors most strongly associated with suicide attempts among female students were injection drug use (APR = 12.8), carrying a weapon on school property (APR = 9.7), and methamphetamine use (APR = 8.7); among male students, the strongest associations were for IDU (APR = 22.4), using vomiting/laxatives for weight control (APR = 17.1), and having been forced to have sex (APR = 14.8). CONCLUSIONS: School-based suicide prevention programs should consider confidential screening for health-risk behaviors that are strongly associated with suicide attempts to help identify students at increased risk for suicide and provide referrals to suicide and other prevention services (e.g., substance abuse and violence prevention) as appropriate.

Epidemiological investigation of a youth suicide cluster: Delaware 2012.

UNLABELLED: In the first quarter of 2012, eight youth (aged 13-21 years) were known to have died by suicide in Kent and Sussex counties, Delaware, twice the typical median yearly number. State and local officials invited the Centers for Disease Control and Prevention to assist with an epidemiological investigation of fatal and nonfatal youth suicidal behaviors in the first quarter of 2012, to examine risk factors, and to recommend prevention strategies. METHODS: Data were obtained from the Delaware Office of the Medical Examiner, law enforcement, emergency departments, and inpatient records. Key informants from youth-serving organizations in the community were interviewed to better understand local context and perceptions of youth suicide. RESULTS: Eleven fatal and 116 nonfatal suicide attempts were identified for the first quarter of 2012 in Kent and Sussex counties. The median age was higher for the fatalities (18 years) than the nonfatal attempts (16 years). More males died by suicide, and more females nonfatally attempted suicide. Fatal methods were either hanging or firearm, while nonfatal methods were diverse, led by overdose/poisoning and cutting. All decedents had two or more precipitating circumstances. Seventeen of 116 nonfatal cases reported that a peer/friend recently died by or attempted suicide. Local barriers to youth services and suicide prevention were identified. DISCUSSION: Several features were similar to previous clusters: Occurrence among vulnerable youth, rural or suburban setting, and precipitating negative life events. Distribution by sex and method were consistent with national trends for both fatalities and nonfatalities. References to the decedents in the context of nonfatal attempts support the concept of 'point clusters' (social contiguity to other suicidal youth as a risk factor for vulnerable youth) as a framework for understanding clustering of youth suicidal behavior. Recommended prevention strategies included: Training to identify at-risk youth and guide them to services; development of youth programs; monitoring trends in youth suicidal behaviors; reviewing evidence-based suicide prevention strategies; and continued implementation of CDC media guidelines for reporting on suicide.

Emergency department visits for overdoses of acetaminophen-containing products.

BACKGROUND: Limited national data on the circumstances of acetaminophen overdoses have hindered identification and implementation of prevention strategies. PURPOSE: To estimate the frequency of and characterize risks for emergency department visits for acetaminophen overdoses that were not related to abuse in the U.S. METHODS: Data were collected from two components of the National Electronic Injury Surveillance System from January 1, 2006, through December 31, 2007, and analyzed from 2009 to 2010 to estimate the annual number of emergency department visits for non-abuse-related acetaminophen overdose by patient demographics, treatments, and type and amount of acetaminophen-containing product ingested. RESULTS: There were an estimated 78,414 emergency department visits (95% CI=63655, 93172) annually for non-abuse-related overdoses of acetaminophen-containing products. Most emergency department visits for acetaminophen overdose were for self-directed violence (69.8%, 95% CI=66.4%, 73.2%), with the highest rate among patients aged 15-24 years (46.4 per 100,000 individuals per year). Unsupervised ingestions by children aged <6 years accounted for 13.4% (95% CI=11.0%, 15.9%) of visits for acetaminophen overdoses (42.5 per 100,000 individuals per year). Therapeutic misadventures accounted for 16.7% (95% CI=14.0%, 19.5%) of visits and most involved overuse for medicinal effects (56.1%, 95% CI=50.6%, 61.6%) rather than use of multiple acetaminophen-containing products or dose confusion. CONCLUSIONS: Non-abuse-related overdoses of acetaminophen products lead to many emergency department visits each year, particularly emergency department visits for self-directed violence. Acetaminophen overdose prevention efforts will likely need to be multidimensional.

Impact of business cycles on US suicide rates, 1928-2007.

OBJECTIVES: We examined the associations of overall and age-specific suicide rates with business cycles from 1928 to 2007 in the United States. METHODS: We conducted a graphical analysis of changes in suicide rates during business cycles, used nonparametric analyses to test associations between business cycles and suicide rates, and calculated correlations between the national unemployment rate and suicide rates. RESULTS: Graphical analyses showed that the overall suicide rate generally rose during recessions and fell during expansions. Age-specific suicide rates responded differently to recessions and expansions. Nonparametric tests indicated that the overall suicide rate and the suicide rates of the groups aged 25 to 34 years, 35 to 44 years, 45 to 54 years, and 55 to 64 years rose during contractions and fell during expansions. Suicide rates of the groups aged 15 to 24 years, 65 to 74 years, and 75 years and older did not exhibit this behavior. Correlation results were concordant with all nonparametric results except for the group aged 65 to 74 years. CONCLUSIONS: Business cycles may affect suicide rates, although different age groups responded differently. Our findings suggest that public health responses are a necessary component of suicide prevention during recessions.

The impact of child maltreatment and intimate partner violence surveillance initiatives.

Child maltreatment (CM) and intimate partner violence (IPV) take a tremendous toll on communities around the world. Despite the impact of CM and IPV, data on their incidence are drawn from disparate sources of varying quality. To improve data resources in these areas, the Centers for Disease Control and Prevention's (CDC) Division of Violence Prevention funded state-based IPV and CM surveillance activities in nine states between 1994 and 2005. This article describes reported outcomes of these surveillance programmes; assesses factors affecting their sustainability; and provides recommendations for similar programmes through document review and interviews with state representatives. Findings indicate that states achieved outcomes with these surveillance initiatives; however, states noted concerns with sustaining systems because of a lack of resources and ineffective collaborations. Highlighted in this article are several lessons that other countries can learn from the experiences of these states in testing CM and IPV surveillance systems.

The relative influence of different domains of social connectedness on self-directed violence in adolescence.

Previous research has linked greater social connectedness with a lowered risk of self-directed violence among adolescents. However, few studies have analyzed the comparative strength of different domains of connectedness (e.g., family, peers and school) to determine where limited resources might best be focused. Data to address that gap were taken from the Centers for Disease Control and Prevention's Student Health and Safety Survey, administered to 4,131 7th-12th graders (51.5% female; 43.8% Hispanic; 22.6% African American or Black). Logistic regressions (controlling for age, gender, race/ethnicity, family structure, academic performance, and depressive symptoms) suggest that family connectedness was a stronger predictor than connectedness to peers, school, or adults at school for non-suicidal self-harm, suicidal ideation, suicide plans, and non-fatal suicidal behavior. In some analyses, peer connectedness was unexpectedly a risk factor. Results have implications for prevention of suicide in adolescence, especially in the context of the current trend towards school-based prevention programs.

A comparison of drug overdose deaths involving methadone and other opioid analgesics in West Virginia.

AIMS: To describe all people dying from unintentional overdoses of methadone or other opioid analgesics (OOA) in West Virginia in 2006. DESIGN: We analyzed medical examiner data supplemented by data from the state prescription drug monitoring program. We compared people whose deaths involved methadone with those whose deaths involved OOA. FINDINGS: The methadone group included 87 decedents, and the OOA group included 163 decedents. Most were male. Decedents in the methadone group were significantly younger than those in the OOA group: more than a quarter were 18-24 years of age. For both groups, approximately 50% had a history of pain, and 80% had a history of substance abuse. There was no intergroup difference in the prevalence of benzodiazepines at post-mortem. Methadone was significantly less likely to have ever been prescribed than OOA. Among those with prescriptions, the proportion prescribed within 30 days of death was significantly greater for methadone than for hydrocodone, but not for oxycodone. Ten (11.5%) of the methadone decedents were enrolled in an opiate treatment program (OTP) at the time of death. CONCLUSIONS: The high prevalence of a substance abuse history and lack of prescriptions suggest that most of the deaths in both groups are related to substance abuse. There was no indication of a harmful effect from methadone's metabolic interaction with benzodiazepines, but provider or patient unfamiliarity with methadone may have been a risk factor. Prescribing methadone, especially to young males, requires extra care. Providers, OTPs and coroners/medical examiners should use state prescription drug monitoring programs to monitor the use of controlled substances by their patients.

Psychological responses to the sniper attacks: Washington DC area, October 2002.

BACKGROUND: This study assessed the psychological and behavioral responses of residents of the Washington DC metropolitan area to the October 2002 sniper shootings, as well as the association between measures of exposure to the shootings and elevated traumatic stress symptoms. METHODS: Random-digit-dial telephone survey of 1205 adults living in Washington DC and two surrounding counties during the shootings, conducted May 2003. Main outcome measures included self-reports regarding traumatic stress symptoms, perceptions of safety, behavioral responses, and exposures to incidents. RESULTS: Forty-five percent of residents reported going to public spaces such as parks and shopping centers less than usual, and 5.5% reported missing at least 1 day of work because of the sniper attacks. Women who reported living within 5 miles of any shooting incident were significantly more likely to report elevated traumatic stress symptoms-consistent with a probable diagnosis of post-traumatic stress disorder-than women who reported living farther from incidents (odds ratio = 4.2, 95% confidence interval = 1.9-9.3). Among men, there was no significant association between reported residential proximity and elevated traumatic stress symptoms. CONCLUSIONS: These results suggest the substantial behavioral and psychological impact that traumatic events such as these sniper shootings can have on communities. They support the importance of clinicians and community leaders addressing psychological functioning in the setting of such events that threaten a population. The results further suggest that women who report residing closest to such incidents are at greatest risk for experiencing elevated symptoms of traumatic stress, and perhaps warrant special attention.

Suicide among Guaraní Kaiowá and Nandeva youth in Mato Grosso do Sul, Brazil.

Information on morbidity and mortality are critical for developing appropriate prevention and health promotion programs. This study summarizes data on the Guaraní (Kaiowá and Nandeva) communities in Mato Grosso do Sul, Brazil, about which little addressing suicide has been documented. Epidemiologic and anthropological data were used to examine suicidal behavior in these indigenous communities. Several findings in this report about the Guaraní Kaiowá and Nandeva communities were remarkable: the rates of suicide among these communities appear higher than the national average; suicide deaths disproportionately affect adolescents and young adults; and suicide rates among young males appear to be increasing. Data in this report highlight the need for health information data specific to a community in order to identify emerging health problems.

A call to collaboration: the federal commitment to suicide prevention.

The federal government, largely through the U.S. Department of Health and Human Services (HHS), sponsors an array of science-based suicide prevention initiatives. This article details the prevention-related agendas and collaborative efforts of five operating divisions within the Department of Health and Human Services: the Substance Abuse and Mental Health Services Administration, National Institutes of Health, Centers for Disease Control and Prevention, Indian Health Service, and Health Resources and Services Administration. The article highlights HHS's activities and their link to the National Strategy for Suicide Prevention, the plan which will guide the nation's suicide prevention efforts for the next decade.

A public health response to a cluster of suicidal behaviors: clinical psychiatry, prevention, and community health.

OBJECTIVE: To develop and implement a community public health response to a suicidal behavior cluster, including collection of risk factor data in order to prevent further behaviors. METHODS: A three-phase response, including school-wide educational debriefings, individual screening for referrals, and on-site crisis management, was implemented. Incidence of suicidal behaviors and their association with hypothesized risk factors were measured. RESULTS: Thirty-three percent of students were screened. Depression and poor social functioning were associated with an increased risk of suicidal ideation. Poor social functioning and school adjustment were associated with an increased risk of suicide attempts. CONCLUSIONS: Development and implementation of a timely public health response, including elucidation of critical risk factors, might prevent further suicidal behaviors.