A prospective latent analysis study of Axis I psychiatric co-morbidity of DSM-IV major depressive disorder

Comorbid alcohol use disorder in psychiatric MDD patients: A five-year prospective study

BACKGROUND

Comorbid alcohol use disorder (AUD) is common among patients with major depressive disorder (MDD), and often complicates presentation and treatment. However, there is a scarcity of clinical studies investigating the characteristics and outcome of psychiatric MDD patients with AUD.

METHODS

In the Vantaa Depression Study (VDS), a five-year prospective study of psychiatric out- and inpatients (N = 269) with MDD, we investigated the clinical features of MDD, comorbid Axis I and II disorders, psychosocial factors, and long-term outcome of patients with or without AUD.

RESULTS

Depressed patients with comorbid AUD at baseline (n = 66/269, 24.5%) were more often male (OR=3.57, [95% CI 1.72 - 7.41], p = 0.001), had more suicidal ideation (OR=1.06 [1.02 - 1.11], p = 0.008), comorbid panic disorders (OR=3.44 [1.47 - 8.06], p = 0.004), symptoms of any personality disorder (OR=1.04 [1.00 - 1.08], p = 0.038), and more often smoked daily (OR=2.79 [1.32 - 5.88], p = 0.007) than those without. At five years, 13.9% (25/180) still had AUD. More specifically, alcohol abuse was associated with suicide attempts, and dependence with suicidal ideation, and Cluster B personality disorder. Patients with AUD spent more time depressed and had more suicide attempts during follow-up.

LIMITATIONS

We did not investigate other substance use disorders. The AUD diagnoses were based on DSM-IV criteria.

CONCLUSIONS

Psychiatric MDD patients with comorbid alcohol use disorders have characteristics consistent with the epidemiology of AUDs in the general population. They are more often males and smoke, and have more comorbid mental disorders and suicidal behavior. Prospectively they spend more time depressed, thus having worse outcomes than patients without AUDs.

Features of borderline personality disorder as a mediator of the relation between childhood traumatic experiences and psychosis-like experiences in patients with mood disorder

Background

Psychosis-like experiences (PEs) are common in patients with non-psychotic disorders. Several factors predict reporting of PEs in mood disorders, including mood-associated cognitive biases, anxiety and features of borderline personality disorder (BPD). Childhood traumatic experiences (CEs), often reported by patients with BPD, are an important risk factor for mental disorders. We hypothesized that features of BPD may mediate the relationship between CEs and PEs. In this study, we investigated the relationships between self-reported PEs, CEs and features of BPD in patients with mood disorders.

Methods

As part of the Helsinki University Psychiatric Consortium study, McLean Screening Instrument (MSI), Community Assessment of Psychic Experiences (CAPE-42) and Trauma and Distress Scale (TADS) were filled in by patients with mood disorders (n = 282) in psychiatric care. Correlation coefficients between total scores of scales and their dimensions were estimated, multiple regression and mediation analyses were conducted.

Results

Total scores of MSI correlated strongly with scores of the CAPE-42 dimension “frequency of positive symptoms” (rho = 0.56; p ≤ 0.001) and moderately with scores of TADS (rho = 0.4; p ≤ 0.001). Total score of MSI and its dimension “cognitive symptoms”, including identity disturbance, distrustfulness and dissociative symptoms, fully mediated the relation between TADS and CAPE-42. Each cognitive symptom showed a partial mediating role (dissociative symptoms 43% (CI = 25–74%); identity disturbance 40% (CI = 30-73%); distrustfulness 18% (CI = 12-50%)).

Conclusions

Self-reported cognitive-perceptual symptoms of BPD fully mediate, while affective, behavioural and interpersonal symptoms only partially mediate the relationships between CEs and PEs. Recognition of co-morbid features of BPD in patients with mood disorders reporting PEs is essential.

Anxiety symptoms in a major mood and schizophrenia spectrum disorders

BACKGROUND

Comorbid anxiety symptoms and disorders are present in many psychiatric disorders, but methodological variations render comparisons of their frequency and intensity difficult. Furthermore, whether risk factors for comorbid anxiety symptoms are similar in patients with mood disorders and schizophrenia spectrum disorders remains unclear.

METHODS

The Overall Anxiety Severity and Impairment Scale (OASIS) was used to measure anxiety symptoms in psychiatric care patients with schizophrenia or schizoaffective disorder (SSA, n=113), bipolar disorder (BD, n=99), or depressive disorder (DD, n=188) in the Helsinki University Psychiatric Consortium Study. Bivariate correlations and multivariate linear regression models were used to examine associations of depressive symptoms, neuroticism, early psychological trauma and distress, self-efficacy, symptoms of borderline personality disorder, and attachment style with anxiety symptoms in the three diagnostic groups.

RESULTS

Frequent or constant anxiety was reported by 40.2% of SSA, 51.5% of BD, and 55.6% of DD patients; it was described as severe or extreme by 43.8%, 41.4%, and 41.2% of these patients, respectively. SSA patients were significantly less anxious (P=0.010) and less often avoided anxiety-provoking situations (P=0.009) than the other patients. In regression analyses, OASIS was associated with high neuroticism, symptoms of depression and borderline personality disorder and low self-efficacy in all patients, and with early trauma in patients with mood disorders.

CONCLUSIONS

Comorbid anxiety symptoms are ubiquitous among psychiatric patients with mood or schizophrenia spectrum disorders, and in almost half of them, reportedly severe. Anxiety symptoms appear to be strongly related to both concurrent depressive symptoms and personality characteristics, regardless of principal diagnosis.