While some suicides are deliberative and involve careful planning, many appear to have been hastily decided-upon and to involve little or no planning. Chronic, underlying risk factors such as substance abuse and depression are also often present, but the acute period of heightened risk for suicidal behavior is often only minutes or hours long (Hawton 2007).
- The Houston study interviewed 153 survivors of nearly-lethal suicide attempts, ages 13-34. Survivors of these attempts were thought to be more like suicide completers due to the medical severity of their injuries or the lethality of the methods used. They were asked: “How much time passed between the time you decided to complete suicide and when you actually attempted suicide?” One in four deliberated for less than 5 minutes! (Simon 2005).
- Duration of Suicidal Deliberation:
- 24% said less than 5 minutes
- 24% said 5-19 minutes
- 23% said 20 minutes to 1 hour
- 16% said 2-8 hours
- 13% said 1 or more days
- Duration of Suicidal Deliberation:
- A study from Deisenhammer asked people who were seen in a hospital following a suicide attempt how long before their suicidal act they first started thinking about attempting it. 48% said within 10 minutes of making the attempt. The full distribution is as follows:
- An Australian study of emergency department visits found 40% of attempters took action within 5 minutes of deciding to attempt (Williams 1980). The authors summarized seven earlier studies that found one-third to four-fifths of attempts were impulsive.
- In an Australian study of survivors of self-inflicted gunshot wounds, 21 of 33 subjects (64%) stated that their attempt was due to an interpersonal conflict with a partner or family member (deMoore 1994). Most survivors were young men who did not suffer from major depression or psychosis, and the act was almost always described as impulsive. A similar study in Texas with 30 firearm attempters found 60% had experienced an interpersonal conflict during the 24 hours preceding their attempt (Peterson 1985).
- At least one-third of suicide decedents under age 18 experienced a crisis within 24 hours of taking their life, according to NVISS data drawn from police and coroner/medical examiner reports. The proportion with a crisis declined with age. In some cases the crises were not just same-day but virtually same-moment (as when decedents shot themselves in the midst of an argument).
- Interviews with 268 patients hospitalized for a poisoning suicide attempts in Sri Lanka found that just over half took the poison after less than 30 minutes of thought, often directly following an argument (Eddelston 2006). While most of the patients survived their attempts, 13 died. Like the nonfatal attempters, over half of those who died deliberated less than 30 minutes.
More studies (Impulsivity & Planning)
Hawton K. Restricting access to methods of suicide. Crisis. 2007;28 (S1):4-9.
Simon, T.R., Swann, A.C., Powell, K.E., Potter, L.B., Kresnow, M., and O’Carroll, P.W. Characteristics of Impulsive Suicide Attempts and Attempters. SLTB. 2001; 32(supp):49-59.
Personal communication, Thomas Simon, March 15, 2005.
Williams, C., Davidson, J., & Montgomery, I. Impulsive suicidal behavior. Journal of Clinical Psychology. 1980;36, 90-94.
de Moore GM, Plew JD, Bray KM, and Snars JN. Survivors of self-inflicted firearm injury. A liaison psychiatry perspective. Medical journal of Australia. 1994;160(7):421-425.
Peterson L, Peterson M, O’Shanick G, and Swann A. Self-inflicted gunshot wounds: Lethality of method versus intent. American Journal of Psychiatry. 1985;142:228-231.
Eddleston M, Karunaratne A, Weerakoon M, et al. Choice of poison for intentional self-poisoning in rural Sri Lanka. Clinical Toxicology. 2006;44:283-6.
Deisenhammer EA, Ing CM, Strauss R, et al. The duration of the suicidal process: how much time is left for intervention between consideration and accomplishment of a suicide attempt? J Clin Psychiatry. 2009;70(1):19-24.