Moderators and mediators among panic, agoraphobia symptoms, and suicidal ideation in patients with panic disorder

Objectives

The most important change of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-V) is the use of dimensional approach to assess the severity of symptoms across different diagnosis. There are 2 purposes in this study: the first purpose was to identify the proportion of outpatients with panic disorder who have suicidal ideation. The second aim was to examine the relationships among panic, agoraphobic symptoms, and suicidal ideation in patients with panic disorder, adjusting by age, social support, and alcohol use.

Methods

Sixty patients with panic disorder were recruited from outpatient psychiatric clinics in southern Taiwan. Suicidal ideation in the preceding 2 weeks was measured. The Panic and Agoraphobic Symptoms Checklist, Social Support Scale, Questionnaire for Adverse Effects of Medication for Panic Disorder, and Social Status Rating Scale were used to understand the severity of panic and agoraphobia, social support, drug adverse effects, and social status. Significant variables from the univariate analysis were included in a forward regression model. Then, we used structural equation modeling to fit the model.

Results

We found that 31.7% of outpatients with panic disorder had had suicidal ideation in the preceding 2 weeks. Multiple regression analysis showed that younger age, current alcohol use, more severe panic symptoms, and less social support were associated with suicidal ideation. In addition, the structural equation model illustrated the recursive model from panic to agoraphobia and suicidal ideation. Agoraphobia had no association with suicidal ideation. Panic symptom was a mediator to suicidal ideation but not agoraphobic symptoms.

Conclusions

A high proportion of patients with panic disorder had suicidal ideation. We found that panic symptoms, social support, age, and alcohol use affected suicide and could be identified. The 3-level model from panic to agoraphobia revealed that panic was a predictor of agoraphobia and agoraphobia was not a predictor of panic. This verified the evolution of the diagnostic view of the DSM. Panic symptom was a mediator to suicidal ideation. With the dimensional model in DSM-V, panic symptoms can be used as a marker for greater morbidity and severity.     

Anxiety disorders and suicidality in the National Comorbidity Survey-Replication

Objective

The current study sought to examine the unique associations between anxiety disorders and suicidality using a large nationally representative sample and controlling for a number of established risk factors for suicide.

Method

Data from the National Comorbidity Survey-Replication were used for analyses. Lifetime diagnostic history and demographics were obtained in this survey through a structured interview. Lifetime suicidal ideation and attempts were also assessed.

Results

Multivariate analyses covarying for psychiatric comorbidity and demographic variables found social anxiety disorder (SAD), posttraumatic stress disorder (PTSD), generalized anxiety disorder (GAD), and panic disorder (PD) to be unique predictors of suicidal ideation, while only SAD, PTSD, and GAD were predictive of suicide attempts. Analyses by gender indicated that each of these four disorders were predictive of suicidal ideation or suicide attempts among women, while only PTSD and PD acted as risk factors among men.

Conclusions

Findings provide further evidence of the negative impact of anxiety disorders, suggest efforts should be made towards their early detection and treatment, and emphasize the importance of suicide risk assessment in treating individuals with anxiety disorders.     

Social anxiety disorder and social fears in the Canadian military: Prevalence, comorbidity, impairment, and treatment-seeking

Background

Military mental health research has rarely investigated social anxiety disorder, despite its known serious consequences in the general population, and what work has been conducted has used specialized samples (e.g., veterans) not representative of all military personnel.

Methods

Data were from the 2002 Canadian Community Health Survey—Canadian Forces Supplement, a representative survey of 8441 active regular and reserve military personnel.

Results

Social anxiety disorder has a high lifetime (8.2%) and past-year (3.2%) prevalence in the military. It is associated with increased odds of depression, panic attacks/disorder, generalized anxiety disorder, and post-traumatic stress disorder (AOR range 4.16-16.29). Being female, ages 35-44, or separated/divorced/widowed increases the odds of having social anxiety disorder, while being an officer or a reservist decreases the odds. Treatment-seeking, as in the general population, is relatively rare. Overall, military personnel with social anxiety disorder experience significant rates of role impairment in all domains (53.1-88.3% report some impairment), with the rate of role impairment increasing with the number of social fears. Notably, many (70.6%) report at least some impairment at work (i.e., in their job with the military).

Conclusion

Social anxiety disorder is an important disorder to take into account when considering military mental health. Observing low rates of treatment-seeking for social anxiety disorder among military personnel highlights the importance of initiatives to allow its identification and treatment.     

Anxiety disorders associated with suicidal ideation and suicide attempts in the National Comorbidity Survey

This study examined the relationship between anxiety disorders and suicidal ideation or suicide attempts in a nationally representative sample (N = 5877; age, 15-54; response rate, 82.4%). A modified version of the Composite International Diagnostic Interview was used to make DSM-III-R mental disorder diagnoses. Two multivariate logistic regression analyses were performed with suicidal ideation (N = 754) and suicide attempts (N = 259) as dependent variables. In each regression, the independent variables entered were lifetime social phobia, panic disorder, agoraphobia, generalized anxiety disorder, simple phobia, and posttraumatic stress disorder (PTSD). Covariates in the analyses were sociodemographics, lifetime mood disorders, substance use disorders, nonaffective psychosis, antisocial personality disorder, and presence of three or more lifetime DSM-III-R diagnoses. PTSD was significantly associated with suicidal ideation (adjusted odds ratio = 2.79; p < 0.01) and suicide attempts (adjusted odds ratio = 2.67; p < 0.01). None of the other anxiety disorders were significantly associated with suicidal ideation or attempts. The robust association between PTSD and suicide attempts has important implications for psychiatric assessment of suicidal behavior. Future research is required to investigate the mechanisms underlying the relationship between PTSD and suicidal behavior.     

Panic disorder and suicidal ideation and behavior: discrepant findings in psychiatric outpatients

OBJECTIVE: Previous investigators found that persons who had ever met criteria for panic disorder or panic attacks reported more lifetime suicide attempts and ideation than persons who had ever met criteria for other psychiatric disorders. To determine whether outpatients with current panic disorders also report such differences, this study examined the suicide attempt rates, levels of suicidal ideation, and levels of hopelessness among four groups of psychiatric outpatients. METHOD: Structured clinical interviews were used to assign diagnoses to 900 consecutive psychiatric outpatients. These patients were administered the Scale for Suicide Ideation and the Beck Hopelessness Scale and were also questioned in detail about previous suicide attempts and past and present suicidal ideation. RESULTS: None (0.0%) of the 73 patients with primary panic disorder without agoraphobia reported having made suicide attempts during their lifetimes. One (1.3%) of the 78 patients who had panic disorder with agoraphobia, 34 (7.0%) of the 485 patients who had mood disorders, and four (1.5%) of the 264 patients who had other psychiatric disorders reported suicide attempts. The mean scores on the Scale for Suicide Ideation and the Beck Hopelessness Scale of the patients with panic disorders and other disorders were significantly lower than the mean scores of the patients with mood disorders. CONCLUSIONS: The rates of suicidal ideation and behavior for psychiatric outpatients who had panic disorders were discrepant with those reported by the earlier group of investigators for a random community sample of persons who reported ever having had panic attacks or met criteria for panic disorders.     

Is COPD associated with suicide behavior?

Background

The goal of this study is to examine the relationship between chronic obstructive pulmonary disease (COPD) and suicidal ideation and suicide attempt among adults in the United States.

Methods

Data were drawn from the National Comorbidity Study-Replication (NCS-R), a household probability sample of adults ages 18 and older in the United States.

Results

COPD is associated with significantly increased odds of suicidal ideation and suicide attempt, compared with those without COPD. The association between COPD and suicide attempt remained statistically significant after adjusting for demographics, depression, panic disorder, substance use and nicotine dependence. The association between COPD and suicidal ideation was no longer significant after adjusting for nicotine dependence.

Conclusions

Our findings provide initial evidence that there is a relationship between COPD and suicidal behavior among adults in the community. Future studies that can examine the relationship between COPD and completed suicide, as well as replication of these results, would improve our understanding of whether and to what degree COPD confers an increased vulnerability for suicide behavior.     

A cluster analysis of early onset in common anxiety disorders

Early onset is regarded as an important characteristic of anxiety disorders, associated with higher severity. However, previous findings diverge, as definitions of early onset vary and are often unsubstantiated. We objectively defined early onset in social phobia, panic disorder, agoraphobia, and generalised anxiety disorder, using cluster analysis with data gathered in the general population. Resulting cut-off ages for early onset were ≤22 (social phobia), ≤31 (panic disorder), ≤21 (agoraphobia), and ≤27 (generalised anxiety disorder). Comparison of psychiatric comorbidity and general wellbeing between subjects with early and late onset in the general population and an outpatient cohort, demonstrated that among outpatients anxiety comorbidity was more common in early onset agoraphobia, but also that anxiety- as well as mood comorbidity were more common in late onset social phobia. A major limitation was the retrospective assessment of onset. Our results encourage future studies into correlates of early onset of psychiatric disorders.     

Predictors of outcome in residential cognitive and interpersonal treatment for social phobia: Do cognitive and social dysfunction moderate treatment outcome?

Background

: The predictors of residential cognitive (RCT) and residential interpersonal Treatment (RIPT) for social phobia were explored. (1) Sotsky et al. (1991) found differential effects of CT and IPT for depression, suggesting that the level of cognitive or social dysfunction predicted differential outcome. We examined whether an analogous effect could be demonstrated in 10 weeks of residential treatment of 80 social phobia subjects. (2) We also included expectations, age of onset, severity of illness, concurrent anxiety, mood, avoidant personality disorder, and body dysmorphic disorder as predictors in this exploratory study.

Method

: Main outcome was the social phobia subscale of Social Phobia and Anxiety Inventory (SPAI SP). DSM-IV axis I and II interviews were completed.

Results

: (1) Sotsky et al. (1991) findings were not reproduced. However, RIPT subjects with poor general functioning were less improved following treatment. Subjects with concurrent agoraphobia responded better with RCT than subjects without agoraphobia. (2) Age of onset and expectations were the most powerful predictors of post treatment outcome.

Conclusion

: Some patient characteristics appear to impact outcome with RIPT and RCT differentially. The findings are discussed.     

Psychotropic medication use mediates the relationship between mood and anxiety disorders and obesity: Findings from a nationally representative sample

Growing evidence points to a relationship between obesity and both mood and anxiety disorders, but the question of what accounts for this association remains unanswered. The present study examined the use of psychotropic medications as a mediator of the mood/anxiety disorder-obesity relationship. Data came from the public use dataset of the Canadian Community Health Survey Cycle 1.2 (age 15 years and older, N = 36,984). Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition psychiatric diagnoses of 12-month mood disorders (e.g., major depressive disorder, mania) and anxiety disorders (e.g., panic attacks, panic disorder, social phobia, agoraphobia) were examined as was use of psychotropic medications (e.g., antidepressants, antipsychotics, anxiolytics, hypnotics, mood stabilizers) and obesity (defined as body mass index ≥30). A series of multiple logistic regression analyses were completed to test study hypotheses. Covariates in these analyses included sociodemographic factors, physical activity, and physical illness burden. The use of two medication classes, namely antidepressants and antipsychotics, emerged as significant predictors of obesity as well as mediators of the psychiatric diagnosis-obesity relationship after evaluating all psychotropic medication classes simultaneously, while also controlling for other theoretically relevant variables. The use of these two medications accounted for 86% of the relationship between mood disorders and obesity and 32% of the relationship between anxiety disorders and obesity. The study findings guide advances in the theoretical conceptualization of the mechanisms involved in mood/anxiety disorder-obesity relations. Clinical implications are discussed.     

The impact of anxiety and migraine on quality of sleep in patients with major depressive disorder

Objective

The aim of this study was to investigate the impact of anxiety disorders and migraine on sleep quality and to find the independent factors that predict sleep quality among patients with major depressive disorder (MDD).

Method

Psychiatric outpatients diagnosed with MDD were enrolled in the study. Major depressive disorder and 7 anxiety disorders were diagnosed using the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision. Migraine was diagnosed based on the International Classification of Headache Disorders, Second Edition. Headache intensity and frequency were reported by the subjects. The Pittsburgh Sleep Quality Index and Hamilton Depression Rating Scale were used to evaluate quality of sleep and depression severity, respectively. Multiple linear regressions were used to identify independent factors related to sleep quality.

Results

One hundred thirty-five subjects (34 men and 101 women) with MDD were enrolled in the study. Subjects with panic disorder and agoraphobia were found to have poorer Pittsburgh Sleep Quality Index scores. Subjects with panic disorder, agoraphobia, and migraine had higher scores for items relating to sleep quality in the Hamilton Depression Rating Scale. Headache intensity and frequency correlated with sleep disturbance. Panic disorder was independently predictive of poor sleep quality. Both migraine and panic disorder independently predicted a greater severity of depression.

Conclusion

Our study demonstrates the negative impact of panic disorder and migraine on MDD and some of the interrelations between depression, anxiety, and sleep quality. Future studies should further explore these interactions and consider possible therapeutic interventions.     

Suicidality in Australian Vietnam veterans and their partners

Lifetime suicidality was assessed in a cohort of 448 ageing Australian Vietnam veterans and 237 female partners during in-person structured psychiatric interviews that permitted direct comparison with age-sex matched Australian population statistics. Relative risks for suicidal ideation, planning and attempts were 7.9, 9.7 and 13.8 times higher for veterans compared with the Australian population and for partners were 6.2, 3.5 and 6.0 times higher. Odds ratios between psychiatric diagnoses and suicidality were computed using multivariate logistic regression, and suicidality severity scores were assigned from ideation, planning and attempt, and analysed using ordinal regression. PTSD, depression alcohol disorders, phobia and agoraphobia were prominent predictors of ideation, attempts and suicidal severity among veterans, while depression, PTSD, social phobia and panic disorder were prominent predictors among partners. For veterans and their partners, PTSD is a risk factor for suicidality even in the presence of other psychiatric disorders, and is stronger in Vietnam veterans than their partners.     

Factors associated with suicidal ideation: Role of emotional and instrumental support

Objectives

Suicidal ideation is an important phase in the suicidal process, preceding suicide attempts and completed suicide. Weak social ties and low support from friends or relatives have been significantly associated with suicidal ideation. This study investigated the relationship between social support and suicidal ideation among young and middle-aged adults in Korea.

Methods

The Seoul Citizens Health and Social Indicators Survey conducted face-to-face interviews with 10,922 self-reporting adults. Questions were asked to assess suicidal ideation, and several questions focused on social support, social networks, health behaviors, and health status.

Results

The strongest association in middle-aged adults was that between suicidal ideation and lack of social support. Poor emotional support significantly influenced suicidal ideation in middle-aged men, whereas lack of instrumental support significantly affected suicidal thoughts in middle-aged women, after controlling for sociodemographic factors, health behaviors, and health status. High alcohol use, functional limitations, and stress were related to suicidal thoughts in young adults, whereas depressive feelings had the strongest association with suicidal ideation in middle-aged women.

Conclusions

Social support is a crucial independent correlate of suicidal ideation, especially in middle-aged adults in an urban community setting. This study shows that it is essential to provide gender-specific social support to prevent suicide.     

Suicidal ideation in treatment-seeking Veterans of Operations Enduring Freedom and Iraqi Freedom: the role of coping strategies, resilience, and social support

Background

Recent epidemiologic studies have found an increased risk of suicide among Veterans of Operations Enduring Freedom and Iraqi Freedom (OEF-OIF) with psychiatric disorders. However, little is known about whether variables other than psychiatric conditions, such as coping strategies, resilience, and social support, may be related to suicidality in this population.

Methods

A total of 167 OEF-OIF Veterans seeking behavioral or primary care services completed a survey containing measures of combat exposure, psychopathology, pain, psychological resilience, social support, and cognitive coping strategies.

Results

Thirty-six respondents (21.6%) reported contemplating suicide in the two weeks prior to completing the survey. Compared to suicide non-contemplators, suicide contemplators were older, and more likely to screen positive for depression and posttraumatic stress disorder (PTSD), and to report a deployment-related pain condition or complaint. They also scored higher on measures of worry, self-punishment, and cognitive-behavioral avoidance strategies, and lower on measures of psychological resilience and postdeployment social support. Multivariate analysis revealed that a positive depression screen, and higher scores on measures of self-punishment and cognitive-social avoidance coping were positively associated with suicidal ideation, while higher scores on measures of psychological resilience (i.e., positive acceptance of change) were negatively related to suicidal ideation. Moderator analysis revealed that a positive screen for depression or PTSD significantly diminished the protective effect of postdeployment social support on suicidal ideation.

Conclusions

1 in 5 treatment-seeking OEF-OIF Veterans may contemplate suicide. Interventions to reduce depressive symptoms, and maladaptive cognitive-behavioral coping strategies of self-punishment and cognitive social avoidance, and to bolster psychological resilience may help mitigate suicidality in this population.     

Family history of alcohol use disorders among adults with panic disorder in the community

Objective

Clinical studies suggest a familial association between panic disorder and alcohol use disorders but this relationship has not been examined in a representative community sample. The objective of this study is to examine the familial association between panic disorder and alcohol use disorders among adults in the community.

Method

Data were drawn from the NESARC, a nationally representative sample of over 43,000 adults in the United States. Rates of alcohol use disorders were examined using the family history method in first-degree relatives (FDRs) of adults with panic disorder. Analyses were adjusted for demographics, alcohol use disorders in the proband, and anxiety disorders in the FDRs.

Results

First-degree relatives of adults with panic disorder have significantly higher odds of alcohol use disorders, compared with FDRs of adults without panic disorder. These associations persist after adjusting for demographic characteristics, alcohol use disorders in the proband, and anxiety disorders in the FDR’s.

Conclusions

Consistent with findings from clinical studies, this is the first population-based study to show a familial link between panic disorder and alcohol use disorders. This association appears independent of the influence of comorbidity of alcohol use disorders and anxiety disorders, suggesting a potential familial and/or genetic pathway. Future longitudinal studies will be needed to further understand the mechanism of this observed association.     

Dizziness: Anxiety, health care utilization and health behavior—: Results from a representative German community survey

Background

Due to the lack of epidemiological data on the relation of dizziness and anxiety, we investigated the prevalence of dizziness and anxiety in a representative sample of the German population. We explored the consequences of comorbid anxiety for emotional distress, functional impairment, health care utilization, and health behavior in dizziness.

Methods

By the end of 2006, we surveyed a total of 1287 persons between 14 and 90 years of age in their homes by trained interviewers with standardized self-rating questionnaires on anxiety (Patient Health Questionnaire, Generalized Anxiety Disorder Scale, Mini-Social Phobia Inventory) and dizziness (Vertigo Symptom Scale). The sample was representative for the German population in terms of age, sex, and education.

Results

Symptoms of dizziness were reported by 15.8% of the participants. Of the participants with dizziness, 28.3% reported symptoms of at least one anxiety disorder (generalized anxiety, social phobia, panic). Persons with dizziness reported more somatic problems such as hypertension, migraine, diabetes, etc. Comorbid anxiety was associated with increased health care use and impairment.

Conclusion

Dizziness is a highly prevalent symptom in the general population. A subgroup with comorbid anxiety is characterized by an increased subjective impairment and health care utilization due to their dizziness. Because treatment options for distinct neurotologic disorders are also known to reduce psychological symptoms, and in order to avoid unnecessary medical treatment, early neurologic and psychiatric/psychotherapeutic referral may be indicated.     

Panic disorder and suicidal ideation in primary care

The purpose of this study was to ascertain whether panic disorder (PD) and suicidal ideation are associated in an inner-city primary care clinic and whether this association remains significant after controlling for commonly co-occurring psychiatric disorders. We surveyed 2,043 patients attending a primary care clinic using the Primary Care Evaluation of Mental Disorders (PRIME-MD) Patient Health Questionnaire, a screening instrument that yields provisional diagnoses of selected psychiatric disorders. We estimated the prevalence of current suicidal ideation and of common psychiatric disorders including panic disorder and major depression. A provisional diagnosis of current PD was received by 127 patients (6.2%). After adjusting for potential confounders (age, gender, major depressive disorder [MDD], generalized anxiety disorder, and substance use disorders), patients with PD were about twice as likely to present with current suicidal ideation, as compared to those without PD (adjusted odds ratio [AOR] = 1.84; 95% confidence interval [CI]: 1.06-3.18; P = .03). After adjusting for PD and the above-mentioned potential confounders, patients with MDD had a sevenfold increase in the odds of suicidal ideation, as compared to those without MDD (AOR = 7.00; 95% CI: 4.42-11.08; P < .0001). Primary care patients with PD are at high risk for suicidal ideation, and patients with PD and co-occurring MDD are at especially high risk. PD patients in primary care thus should be assessed routinely for suicidal ideation and depression.     

Moral objections to suicide and suicidal ideation among mood disordered Whites, Blacks, and Hispanics

Understanding the beliefs that protect individuals against suicide can help to enhance suicide prevention strategies. One measure of suicide non-acceptability is the moral objections to suicide (MOS) sub-scale of the reasons for living inventory (RFLI). This study examined the MOS and suicidal ideation of White, Black, and Hispanic individuals with mood disorders. We expected minority individuals to have stronger objections to suicide.

Method

Eight hundred and four, White (588), Black (122) and Hispanic (94) participants with DSM-IV diagnoses of MDD or bipolar disorder were administered the scale for suicide ideation, the reasons for living inventory and several measures of clinical distress.

Results

Higher suicidal ideation was modestly correlated with lower MOS scores overall (r = 0.15, p = 0.001). Among Blacks however the relationship was inverted: despite having higher suicidal ideation than Whites or Hispanics, Blacks reported the least accepting attitudes toward suicide.

Conclusion

These results suggest that attitudes regarding the acceptability of suicide may be independent of suicidal ideation.     

Panic attacks as a risk for later psychopathology: results from a nationally representative survey

Background: There is a growing body of literature suggesting that panic attacks without panic disorder are associated with increases in a wide range of psychopathology and impairment. However, the majority of the literature to date has been cross‐sectional. Some longitudinal research supports the view that panic attacks are a nonspecific risk factor for future psychopathology. Using a large nationally representative longitudinal survey of adults, we sought to determine whether panic attacks predict new onset Axis I disorders. Methods: The Alcohol Use Disorder and Associated Disabilities Interview Schedule—DSM‐IV Version was used to make diagnoses of psychiatric disorders in the National Epidemiologic Survey on Alcohol and Related Conditions Waves 1 and 2 (n = 34,653, aged 18 and older, response rate = 70.2%). Incident psychiatric disorders at Wave 2 were compared between people with and without panic attacks at Wave 1. Results: Panic attacks at Wave 1 were significantly associated with increased incidents of generalized anxiety disorder, panic disorder, social phobia, major depression, dysthymia, mania and hypomania, any anxiety disorder, and any mood disorder even after adjusting for sociodemographic variables, Wave 1 Axis I disorders, and Axis II disorders (OR's ranging from 1.62 to 2.77). Conclusions: The presence of panic attacks may be an important indicator of overall psychological distress and the risk of more severe psychopathology in the future. Depression and Anxiety, 2011. © 2011 Wiley‐Liss, Inc.     

Co-occurrence of Axis I and Axis II disorders in female and male patients with panic disorder with agoraphobia

Objective

The aim of this study is to compare female and male patients with panic disorder with agoraphobia (PDA) for the co-occurring Axis I and Axis II (personality) disorders, to better understand sex differences in PDA.

Methods

The Structured Clinical Interview for Diagnostic and Statistical Manual for Mental Disorders, Fourth Edition (DSM-IV) Axis I Disorders, Clinician Version and the Structured Clinical Interview for DSM-IV Axis II Personality Disorders were administered to 157 consecutive outpatients (112 females and 45 males) with principal diagnosis of PDA, who sought treatment at the 2 anxiety disorders clinics. Women and men with PDA were then compared with regard to the type and frequency of the co-occurring Axis I and Axis II disorders.

Results

Women with PDA had a statistically greater tendency to receive co-occurring Axis I diagnoses and a greater number of Axis I diagnoses than men. Such a difference was not found for personality disorders. However, no sex difference was found for the mean number of co-occurring Axis I and Axis II diagnoses per patient. There were significantly more women with at least one co-occurring anxiety disorder. Women had a significantly higher frequency of specific phobia, whereas men were diagnosed with hypochondriasis and past alcohol abuse or dependence significantly more often. With regard to Axis II disorders, the only significant sex difference pertained to the higher frequency of dependent personality disorder among women.

Conclusions

The results of this study suggest that there are more similarities than differences between sexes in the co-occurring Axis I and Axis II disorders. Still, the relatively specific relationships between PDA and excessive alcohol use in men and between PDA and dependent personality traits and personality disorder in women seem important and have implications for clinical practice and treatment.     

Sleep problems and suicidality in the National Comorbidity Survey Replication

Objective

Links between sleep problems and suicidality have been frequently described in clinical samples; however, this issue has not been well-studied in the general population. Using data from a nationally representative survey, we examined the association between self-reported sleep difficulties and suicidality in the United States.

Methods

The WHO Composite International Diagnostic Interview was used to assess sleep problems and suicidality in the National Comorbidity Survey Replication (NCS-R). Relationships between three measures of sleep (difficulty initiating sleep, maintaining sleep, early morning awaking), and suicidal thoughts, plans, and attempts were assessed in logistic regression analyses, while controlling for demographic characteristics, 12-month diagnoses of mood, anxiety and substance use disorders, and chronic health conditions.

Results

In multivariate models, the presence of any of these sleep problems was significantly related to each measure of suicidality, including suicidal ideation (OR = 2.1), planning (OR = 2.6), and suicide attempt (OR = 2.5). Early morning awakening was associated with suicidal ideation (OR = 2.0), suicide planning (OR = 2.1), and suicide attempt (OR = 2.7). Difficulty initiating sleep was a significant predictor of suicidal ideation and planning (ORs: 1.9 for ideation; 2.2 for planning), while difficulty maintaining sleep during the night was a significant predictor of suicidal ideation and suicide attempts (ORs: 2.0 for ideation; 3.0 for attempt).

Conclusions

Among community residents, chronic sleep problems are consistently associated with greater risk for suicidality. Efforts to develop comprehensive models of suicidality should consider sleep problems as potentially independent indicators of risk.