Suicidal ideation and depressive symptoms among bipolar patients as predictors of the health and well-being of caregivers.

OBJECTIVES: Few studies have addressed the physical and mental health effects of caring for a family member with bipolar disorder. This study examined whether caregivers' health is associated with changes in suicidal ideation and depressive symptoms among bipolar patients observed over one year. METHODS: Patients (N = 500) participating in the Systematic Treatment Enhancement Program for Bipolar Disorder and their primary caregivers (N = 500, including 188 parental and 182 spousal caregivers) were evaluated for up to one year as part of a naturalistic observational study. Caregivers' perceptions of their own physical health were evaluated using the general health scale from the Medical Outcomes Study 36-item Short-Form Health Survey. Caregivers' depression was evaluated using the Center for Epidemiological Studies of Depression Scale. RESULTS: Caregivers of patients who had increasing suicidal ideation over time reported worsening health over time compared to caregivers of patients whose suicidal ideation decreased or stayed the same. Caregivers of patients who had more suicidal ideation and depressive symptoms reported more depressed mood over a one-year reporting period than caregivers of patients with less suicidal ideation or depression. The pattern of findings was consistent across parent caregivers and spousal caregivers. CONCLUSIONS: Caregivers, rightly concerned about patients becoming suicidal or depressed, may try to care for the patient at the expense of their own health and well-being. Treatments that focus on the health of caregivers must be developed and tested.

Current suicide ideation and prior suicide attempts of bipolar patients as influences on caregiver burden.

We examined whether caregivers of bipolar patients reporting current suicidal ideation and/or a history of a suicide attempt reported higher levels of burden and/or poorer health compared to caregivers of patients without these suicidality indices. In a cross-sectional design, caregivers (N = 480) associated with (a) patients with current suicidal ideation or (b) patients with a positive lifetime history of at least one suicide attempt, reported lower general health scores than caregivers associated with patients with neither of these indices. Parents of patients with at least one lifetime attempt reported more burden secondary to role dysfunction than spouses. Levels of depression in caregivers varied with whether the caregiver was a spouse or a parent, and whether patients had a history of suicide attempts, current suicidal ideation, or both.

Are antidepressants associated with new-onset suicidality in bipolar disorder? A prospective study of participants in the Systematic Treatment Enhancement Program for Bipolar Disorder (STEP-BD).

OBJECTIVE: Depressive episodes are common in bipolar disorder, and the disorder is characterized by high suicide rates. Recent analyses indicate a possible association of antidepressant treatment and suicidality in children and adults with depressive or anxiety disorders. However, few data are available to inform the suicidality risk assessment of antidepressant use specifically in bipolar disorder. METHOD: Of the first 2000 participants followed for 18 months in the Systematic Treatment Enhancement Program for Bipolar Disorder (STEP-BD), 425 experienced a prospectively observed, new-onset major depressive episode without initial suicidal ideation. Standardized ratings of suicidality and antidepressant exposure at index depressive episode and next evaluation were used to investigate the primary hypothesis that new-onset suicidality was associated with increased antidepressant exposure (antidepressant initiation or dose increase). Secondary analysis investigated correlates of new-onset suicidality and antidepressant exposure. Data were collected from November 8, 1999, to April 24, 2002. RESULTS: Twenty-four participants (5.6%) developed new-onset suicidality at follow-up, including 2 suicide attempts. There was no association of new-onset suicidality with increased antidepressant exposure or any change in antidepressant exposure, and no association with initiation of antidepressant treatment. New-onset suicidality was associated with neuroticism, prior attempt, and higher depressive or manic symptom ratings at index episode. Increased antidepressant exposure was negatively associated with higher manic symptom rating at index episode; control for this sole empirically identified confound did not alter the primary results. CONCLUSIONS: Although careful monitoring for suicidality is always warranted in bipolar disorder, this cohort study provides no evidence that increased antidepressant exposure is associated with new-onset suicidality in this already high-risk population. Correlates of both suicidality and antidepressant exposure indicate directions for further research.

Suicidal ideation and pharmacotherapy among STEP-BD patients.

OBJECTIVE: Little is known about the effects of lithium on suicidal ideation or about the possible antisuicidal effects of divalproex, second-generation antipsychotics, or antidepressants among persons with bipolar disorder. METHODS: Using a cross-sectional design, the authors examined patterns of psychotropic drug use relative to suicidal ideation among 1,000 patients with bipolar disorder in the National Institute of Mental Health's Systematic Treatment Enhancement Program for Bipolar Disorder (STEP-BD). RESULTS: The presence of suicidal ideation was similar between patients who were taking any lithium and those who were not (22.2 percent and 25.8 percent, respectively) and between those who were taking any divalproex and those who were not (20.3 percent and 21.5 percent). Suicidal ideation was significantly more prevalent among patients who were taking a second-generation antipsychotic than those who were not (26 percent and 17 percent) and those who were taking an antidepressant and those who were not (25 percent and 14 percent). After other variables had been controlled for, lithium prescriptions were significantly more common among patients who had suicidal ideation. CONCLUSIONS: Among patients with bipolar disorder who have suicidal ideation, antidepressants and second-generation antipsychotics appear to be prescribed by community practitioners more often than other medications, with lithium reserved for those with more severe illness characteristics.

Contributors to suicidal ideation among bipolar patients with and without a history of suicide attempts.

This study was designed to develop models for vulnerability to suicidal ideation in bipolar patients. Logistic regression models examined correlates of suicidal ideation in patients who had versus had not attempted suicide previously. Of 477 patients assessed, complete data on demographic, illness history, and personality variables were available on 243. The regression models achieved positive predictive values of 55% and 59% for the attempter (N = 92) and nonattempter groups (N = 151), respectively. Depression was cross-sectionally associated with suicidal ideation in both the attempter and nonattempter groups but made a smaller contribution among attempters. Poor psychosocial adaptation and the personality factor "openness" were stronger contributors to suicidal ideation among prior attempters while anxiety and extraversion appeared protective against ideation. Among nonattempters, depression, anxiety, and neuroticism were the predominant influences on suicidal ideation. Bipolar patients with suicidal ideation may benefit from different treatment strategies depending on their prior attempt status.

Prospective predictors of suicide and suicide attempts in 1,556 patients with bipolar disorders followed for up to 2 years.

OBJECTIVES: Bipolar disorders are associated with high rates of suicide attempts (SAs) and completions. Several factors have been reported to be associated with suicide in persons with bipolar disorder, but most studies to date have been retrospective and have not utilized multivariate statistics to account for the redundant prediction among variables submitted for analysis. METHODS: This study examined the association between baseline clinical and demographic variables and subsequent SAs and completions through 2 years of follow-up of participants in the Systematic Treatment Enhancement Program for Bipolar Disorder using a pattern-mixture model. RESULTS: Of the sample with complete data (n = 1,556), 57 patients (3.66%) experienced an SA or completion (CS). Several variables predicted suicidality (SA + CS) in this data set when considered alone, but after controlling for redundant prediction from other baseline characteristics, only history of suicide [odds ratio (OR) = 4.52, p < 0.0001] and percent days depressed in the past year (OR = 1.16, p = 0.036) were significantly associated with SAs and completions. A secondary analysis included a greater number of variables but a smaller sample size (n = 1,014). In the secondary analyses, only prior SAs predicted prospective suicidality (OR = 3.87, p = 0.0029). CONCLUSIONS: These results indicate that patients with bipolar disorder who present with a history of SAs are over four times as likely to have a subsequent SA or completion. Further studies are needed to evaluate and prevent future attempts in this high-risk cohort.