Predictors of suicide attempt in early-onset, first-episode psychoses: a longitudinal 24-month follow-up study.
To study the prevalence of suicide attempts and factors associated with risk for suicide during the first episode of psychosis, and to identify early predictors of suicide attempts over a 24-month follow-up period in an early-onset, first-episode psychosis cohort.
110 subjects in their first episode of psychosis aged between 9 and 17 years were assessed by using the DSM-IV diagnostic interview Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version and a battery of clinical instruments at baseline and at 12 and 24 months. Patients were enrolled in the study from March 2003 through November 2005. Suicide attempts and level of suicidality at each assessment were evaluated by using the Clinical Global Impression for Severity of Suicidality and the Hamilton Depression Rating Scale. Subjects were classified as being at high, low, or no risk of suicide, depending on their scores on certain items of these scales. Clinical associations between the outcome measures high risk for suicide during acute episode and suicide attempts during follow-up were investigated by 2 sets of logistic regression analyses.
The 24-month prevalence of suicide attempters was 12.4%. History of suicide attempts prior to psychotic episode (OR = 20.13; 95% CI, 1.83-220.55; P = .01), severe depressive symptoms (OR = 8.78; 95% CI, 1.15-67.11; P = .003), and antidepressant treatment (OR = 15.56; 95% CI, 2.66-90.86; P = .002) were associated with being classified as high suicide risk at baseline. The categorization of high suicide risk at baseline predicted suicide attempts during follow-up (OR = 81.66; 95% CI, 11.61-574.35; P = .000).
Suicide is a major concern in early-onset first-episode psychosis. Suicidal behavior and depressive symptoms at psychosis onset are important signs to be aware of to prevent suicide attempts during the early period after first-episode psychosis.
Sanchez-Gistau V
，Baeza I
，Arango C
，González-Pinto A
，de la Serna E
，Parellada M
，Graell M
，Paya B
，Llorente C
，Castro-Fornieles J
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Antidepressant discontinuation and risk of suicide attempt: a retrospective, nested case-control study.
Prior efforts to assess the impact of antidepressant use on risk of suicide attempt focused on antidepressant initiation or duration of use. Gaps remain in understanding risks associated with antidepressant discontinuation in the context of the drug regimen. We assessed the effects of antidepressant discontinuation on the risk of suicide attempt.
We report a nested case-control study of suicide attempt with at least 12 months of prior observation. A retrospective cohort of 2.4 million patients with depression (ICD-9 codes 296.2, 296.3, 300.4, and 311), aged 5-89 years, was created using standard Healthcare Effectiveness Data and Information Set (HEDIS) criteria; from this cohort, cases (n = 10,456) and controls (n = 41,815) were selected for study. Data were from a large, national, longitudinal, integrated claims database of managed care enrollees in the United States from calendar years 1999 through 2006.
Compared to controls, cases were more likely to have used antidepressants, to have had multiple antidepressants, and to have had prior depressive episodes and inpatient stays that involved depression. After adjusting for confounding due to depression severity, comorbidities, and other medications, antidepressant use showed a protective effect for suicide attempt (OR = 0.62, P < .001). Compared to prior therapy, antidepressant discontinuation had a significant risk for suicide attempt (OR = 1.61, P < .05). Antidepressant initiation had the highest risk for suicide attempt (OR = 3.42, P < .05), followed by titration (titration up, OR = 2.62; down, OR = 2.19; P < .05).
Substantial confounding exists in examining the link between antidepressant use and suicide attempt, specifically regarding those factors associated with characteristics of depression. Antidepressant discontinuation showed a significant risk for suicide attempt, as did the period of an abbreviated trial, that is, stopping before a therapeutic regimen of 56 days had been reached. The highest risk was associated with initiation, a finding consistent with other studies, closely followed by periods of dosing changes and discontinuation. Patients should be closely monitored during these periods.
Valuck RJ
，Orton HD
，Libby AM
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