Suicide and Attempted Suicide

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Chapter 25 Suicide and Attempted Suicide

Youth suicide is a major and preventable public health problem. It ranks as the 3rd and 4th leading causes of death among young people ages 15-24 yr and 10-14 yr, respectively.

Each year, there are approximately 10 suicides for every 100,000 youngsters younger than 19 yr, an estimated 12 suicides every day. Morbidity from suicide attempts is high, with approximately 2 million young people attempting suicide each year and almost 700,000 receiving medical attention. There are a number of psychologic, social, cultural, and environmental risk factors for suicide, and knowledge of these risk factors can facilitate identification of youths at highest risk.

Epidemiology

Suicide Completions

Suicide is very rare before puberty. Rates of completed suicide increase steadily across the teen years and into young adulthood, peaking in the early 20s. Males complete suicide at a rate 4 times that of females and represent 79.4% of all suicides. Firearms remain the most commonly used method of completing suicide for males, whereas females are more likely to complete suicide by poisoning (Fig. 25-1). In the past 60 yr, the suicide rate has quadrupled among 15-24 yr old males and has doubled for females of the same age. The male:female ratio for completed suicide rises with age from 3 : 1 in young children to approximately 4 : 1 in 15-24 yr olds, and to greater than 6 : 1 among 20-24 yr olds.

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Figure 25-1 Annual suicide rates among persons aged 15-19 yr, by year and method, United States, 1992-2001.

(From Centers for Disease Control and Prevention: Methods of suicide among persons aged 10–19 years, United States, 1992–2001, MMWR Morb Mortal Wkly Rep 53:471–474, 2004.)

The ethnic groups with the highest risk for completed suicide are American Indians and Alaska Natives. Within this population, suicide is the second leading cause of death, accounting for nearly 1 in 5 deaths among youth ages 15-24 yr. The ethnic groups with the lowest risk are African-Americans, Hispanics, Asians, and Pacific Islanders. The suicide rate among African-American, Hispanic, and other minority males has continued to increase, and the rate among white males has remained steady. Suicide risk also varies in different countries (Fig. 25-2).

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Figure 25-2 Suicide rates in selected regions and countries.

(From Hawton K, van Heeringen K: Suicide. Lancet 373:1372–1380, 2009.)

Risk Factors

In addition to age, race and ethnicity, and a history of a previous suicide attempt, there are multiple risk factors that predispose youths to suicide.

Pre-existing Psychiatric Illness

The great majority (estimated at 90%) of youths who complete suicide have a pre-existing psychiatric illness, most commonly major depression (Chapter 24.1). Among girls, chronic anxiety, especially panic disorder, also is associated with suicide completion (Chapter 23). Among boys, conduct disorder and substance use convey increased risk. Comorbidity of a substance use disorder (Chapter 108), a mood disorder (Chapter 24), and conduct disorder (Chapter 27) has been linked to suicide by firearm.

Assessment and Intervention

Assessment of suicidal ideation should be a regular part of visits with young patients. Two thirds of youths who commit suicide visit a physician in the month before they kill themselves. When not specifically asked, youth are less likely to disclose depression, suicidal thoughts, and patterns of drug use. Distress is not always expressed in the same ways among persons from different cultural backgrounds.

Evaluating the presence and degree of suicidality and underlying risk factors is complex; clinical assessment is best conducted by a qualified mental health professional. All suicidal ideation and attempts should be taken seriously and require a thorough assessment to evaluate the youth’s current state of mind, underlying psychiatric conditions, and ongoing risk of harm. Gathering information from multiple sources and by varied culturally and developmentally sensitive techniques are essential in evaluating suicidal risk indicators.

The reliability and validity of interview reporting of children and adolescents may be affected by their level of cognitive development and their understanding of the relationship between their emotions and behavior. Confirmation of the youth’s suicidal behavior can be obtained from information gathered by interviewing others who know the child or adolescent. There is often a discrepancy between child and parent reports, with both children and adolescents being more likely to tell of suicidal ideation and suicidal actions than their parents.

Ideation can be assessed by the following series of questions: “Did you ever feel so upset that you wished you were not alive or wanted to die?” “Did you ever do something that you knew was so dangerous that you could get hurt or killed by doing it?” “Did you ever hurt yourself or try to hurt yourself?” “Did you ever try to kill yourself?”

The assessment of attempts should include a detailed exploration of the hours immediately preceding the attempt to identify precipitants, as well as the circumstances of the attempt itself to identify intent and potential lethality. Attempters at greatest risk for completed suicide are those who are male; have made a prior suicide attempt; have current ideation, intent, a written note, and a plan; have a mental status altered by depression, mania, anxiety, intoxication, psychosis, hopelessness, rage, humiliation, or impulsivity; and lack supportive family members who can provide supervision, safeguard the home (prevent access to firearms, medications, alcohol, drugs), and ensure adherence to treatment recommendations (Table 25-1).

Table 25-1 CHECKLISTS FOR ASSESSING CHILD OR ADOLESCENT SUICIDE ATTEMPTERS IN AN EMERGENCY DEPARTMENT OR CRISIS CENTER

ATTEMPTERS AT GREATER RISK FOR SUICIDE

Suicidal History

Demographics

Mental State

LOOK FOR SIGNS OF CLINICAL DEPRESSION:

LOOK FOR SIGNS OF MANIA OR HYPOMANIA:

From American Foundation for Suicide Prevention: Today’s suicide attempter could be tomorrow’s suicide (poster), New York, 1999, American Foundation for Suicide Prevention, 1-888-333-AFSP.

Youth with these risk factors generally require inpatient level of care to ensure safety, clarify diagnosis, and comprehensively plan treatment. For those youth suitable for treatment in the outpatient setting, an appointment should be scheduled within a few days with a mental health professional. Ideally this appointment should be scheduled before leaving the assessment venue, because 50% of those who attempt suicide fail to complete the follow-up referral. A procedure should be in place to contact the family if the family fails to complete the referral. Therapies that have been found to be helpful with suicidal youth include cognitive-behavioral therapy, dialectical behavioral therapy, and interpersonal therapy. Psychotropic medications are used adjunctively to treat underlying psychiatric disorders.

Bibliography

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American Association of Suicidality. Fact sheets. (website) www.suicidology.org/web/guest/stats-and-tools/fact-sheets Accessed February 12, 2010

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Centers for Disease Control and Prevention. Alcohol and suicide among racial/ethnic populations—17 states, 2005-2006. MMWR Morb Mortal Wkly Rep. 2009;58:637-642.

Hawton K. Completed suicide after attempted suicide. BMJ. 2010;341:c3064.

Hawton K, van Heeringen K. Suicide. Lancet. 2009;373:1372-1380.

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National Institute of Mental Health. Suicide in the U.S.: statistics and prevention. (website) www.nimh.nih.gov/health/publications/suicide-in-the-us-statistics-and-prevention/index.shtml Accessed February 12, 2010

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