Trajectories of remitted psychotic depression: identification of predictors of worsening by machine learning

BACKGROUND

Remitted psychotic depression (MDDPsy) has heterogeneity of outcome. The study's aims were to identify subgroups of persons with remitted MDDPsy with distinct trajectories of depression severity during continuation treatment and to detect predictors of membership to the worsening trajectory.

METHOD

One hundred and twenty-six persons aged 18-85 years participated in a 36-week randomized placebo-controlled trial (RCT) that examined the clinical effects of continuing olanzapine once an episode of MDDPsy had remitted with sertraline plus olanzapine. Latent class mixed modeling was used to identify subgroups of participants with distinct trajectories of depression severity during the RCT. Machine learning was used to predict membership to the trajectories based on participant pre-trajectory characteristics.

RESULTS

Seventy-one (56.3%) participants belonged to a subgroup with a stable trajectory of depression scores and 55 (43.7%) belonged to a subgroup with a worsening trajectory. A random forest model with high prediction accuracy (AUC of 0.812) found that the strongest predictors of membership to the worsening subgroup were residual depression symptoms at onset of remission, followed by anxiety score at RCT baseline and age of onset of the first lifetime depressive episode. In a logistic regression model that examined depression score at onset of remission as the only predictor variable, the AUC (0.778) was close to that of the machine learning model.

CONCLUSIONS

Residual depression at onset of remission has high accuracy in predicting membership to worsening outcome of remitted MDDPsy. Research is needed to determine how best to optimize the outcome of psychotic MDDPsy with residual symptoms.

Effect of olanzapine exposure on relapse and brain structure in patients with major depressive disorder with psychotic features

Some data suggest that antipsychotics may adversely affect brain structure. We examined the relationship among olanzapine exposure, relapse, and changes in brain structure in patients with major depressive disorder with psychotic features. We analyzed data from the Study of the Pharmacotherapy of Psychotic Depression II trial (STOP-PD II), a randomized, placebo-controlled trial in patients with psychotic depression who attained remission on sertraline and olanzapine and were randomized to continue sertraline plus olanzapine or placebo for 36 weeks. Olanzapine steady state concentration (SSC) were calculated based on sparsely-sampled levels. Rates of relapse and changes in brain structure were assessed as outcomes. There were significant associations between dosage and relapse rates (N = 118; HR = 0.94, 95% CI [0.897, 0.977], p = 0.002) or changes in left cortical thickness (N = 44; B = -2.0 × 10-3, 95% CI [-3.1 × 10-3, -9.6 × 10-4], p < 0.001) and between SSC and changes in left cortical thickness (N = 44; B = -8.7 × 10-4, 95% CI [-1.4 × 10-3, -3.6 × 10-4], p = 0.001). Similar results were found for the right cortex. These associations were no longer significant when the analysis was restricted to participants treated with olanzapine. Our findings suggest that, within its therapeutic range, the effect of olanzapine on relapse or cortical thickness does not depend on its dosage or SSC. Further research is needed on the effect of olanzapine and other antipsychotics on mood symptoms and brain structure.

Brain metabolite levels in remitted psychotic depression with consideration of effects of antipsychotic medication

BACKGROUND

The neurobiology of psychotic depression is not well understood and can be confounded by antipsychotics. Magnetic resonance spectroscopy (MRS) is an ideal tool to measure brain metabolites non-invasively. We cross-sectionally assessed brain metabolites in patients with remitted psychotic depression and controls. We also longitudinally assessed the effects of olanzapine versus placebo on brain metabolites.

METHODS

Following remission, patients with psychotic depression were randomized to continue sertraline + olanzapine (n = 15) or switched to sertraline + placebo (n = 18), at which point they completed an MRS scan. Patients completed a second scan either 36 weeks later, relapse, or discontinuation. Where water-scaled metabolite levels were obtained and a Point-RESolved Spectroscopy sequence was utilized, choline, myo-inositol, glutamate + glutamine (Glx), N-acetylaspartate, and creatine were measured in the left dorsolateral prefrontal cortex (L-DLPFC) and dorsal anterior cingulate cortex (dACC). An ANCOVA was used to compare metabolites between patients (n = 40) and controls (n = 46). A linear mixed-model was used to compare olanzapine versus placebo groups.

RESULTS

Cross-sectionally, patients (compared to controls) had higher myo-inositol (standardized mean difference [SMD] = 0.84; 95%CI = 0.25-1.44; p = 0.005) in the dACC but not different Glx, choline, N-acetylaspartate, and creatine. Longitudinally, patients randomized to placebo (compared to olanzapine) showed a significantly greater change with a reduction of creatine (SMD = 1.51; 95%CI = 0.71-2.31; p = 0.0002) in the dACC but not glutamate + glutamine, choline, myo-inositol, and N-acetylaspartate.

CONCLUSIONS

Patients with remitted psychotic depression have higher myo-inositol than controls. Olanzapine may maintain creatine levels. Future studies are needed to further disentangle the mechanisms of action of olanzapine.

Effects of antipsychotic medication on functional connectivity in major depressive disorder with psychotic features

The effect of antipsychotic medication on resting state functional connectivity in major depressive disorder (MDD) is currently unknown. To address this gap, we examined patients with MDD with psychotic features (MDDPsy) participating in the Study of the Pharmacotherapy of Psychotic Depression II. All participants were treated with sertraline plus olanzapine and were subsequently randomized to continue sertraline plus olanzapine or be switched to sertraline plus placebo. Participants completed an MRI at randomization and at study endpoint (study completion at Week 36, relapse, or early termination). The primary outcome was change in functional connectivity measured within and between specified networks and the rest of the brain. The secondary outcome was change in network topology measured by graph metrics. Eighty-eight participants completed a baseline scan; 73 completed a follow-up scan, of which 58 were usable for analyses. There was a significant treatment X time interaction for functional connectivity between the secondary visual network and rest of the brain (t = -3.684; p = 0.0004; pFDR = 0.0111). There was no significant treatment X time interaction for graph metrics. Overall, functional connectivity between the secondary visual network and the rest of the brain did not change in participants who stayed on olanzapine but decreased in those switched to placebo. There were no differences in changes in network topology measures when patients stayed on olanzapine or switched to placebo. This suggests that olanzapine may stabilize functional connectivity, particularly between the secondary visual network and the rest of the brain.

The relationship of white matter microstructure with psychomotor disturbance and relapse in remitted psychotic depression

BACKGROUND

Psychomotor disturbance is common in psychotic depression and is associated with relapse. In this analysis, we examined whether white matter microstructure is associated with relapse probability in psychotic depression and, if so, whether white matter microstructure accounts for the association between psychomotor disturbance and relapse.

METHODS

We used tractography to characterize diffusion-weighted MRI data in 80 participants enrolled in a randomized clinical trial that compared efficacy and tolerability of sertraline plus olanzapine with sertraline plus placebo in the continuation treatment of remitted psychotic depression. Cox proportional hazard models tested the relationships between psychomotor disturbance (processing speed and CORE score) at baseline, white matter microstructure (fractional anisotropy [FA] and mean diffusivity [MD]) in 15 selected tracts at baseline, and relapse probability.

RESULTS

CORE was significantly associated with relapse. Higher mean MD was significantly associated with relapse in the each of the following tracts: corpus callosum, left striato-frontal, left thalamo-frontal, and right thalamo-frontal. CORE and MD were each associated with relapse in the final models.

LIMITATIONS

As a secondary analysis with a small sample size, this study was not powered for its aims, and is vulnerable to types I and II statistical errors. Further, the sample size was not sufficient to test the interaction of the independent variables and randomized treatment group with relapse probability.

CONCLUSIONS

While both psychomotor disturbance and MD were associated with psychotic depression relapse, MD did not account for the relationship between psychomotor disturbance and relapse. The mechanism by which of psychomotor disturbance increases the risk of relapse requires further investigation.

CLINICAL TRIAL REGISTRATION

Study of the Pharmacotherapy of Psychotic Depression II (STOP-PD II); NCT01427608. URL: https://clinicaltrials.gov/ct2/show/NCT01427608.

Association of mycophenolate and azathioprine use with cognitive function in systemic lupus

OBJECTIVES

Cognitive dysfunction (CD) is a common manifestation of SLE that can have detrimental consequences for those affected. To date, no treatments have been approved for SLE-CD. This study aims to assess the association of azathioprine (AZA) and mycophenolate (MMF) use with SLE-CD, given that these medications have demonstrated neuroprotective qualities in prior studies.

METHODS

Consecutive adult SLE patients presenting to a single healthcare center were considered for participation. The ACR neuropsychological battery for SLE was administered to consenting patients at 0, 6 and 12 months. Scores were compared with age- and sex-matched controls. Primary outcome was CD, defined as a z-score ≤-1.5 in two or more cognitive domains. Mixed-effects logistic regression models were constructed to estimate the odds of CD with respect to AZA and MMF use.

RESULTS

A total of 300 participants representing 676 patient visits completed the study; 114 (38%) met criteria for CD at baseline. The cumulative AZA dose (g/kg) was associated with reduced odds of CD [odds ratio (OR) 0.76 (95% CI 0.58, 0.98), P = 0.04]. Years of AZA treatment was also associated with reduced odds of CD [OR 0.72 (95% CI 0.54, 0.97), P = 0.03]. MMF use was not associated with CD.

CONCLUSION

AZA use was associated with significantly lower odds of SLE-CD, while MMF use was not. Additional studies are warranted to further investigate the relationship of AZA and SLE-CD.

Assessing the Utility of the Montreal Cognitive Assessment in Screening for Cognitive Impairment in Patients With Systemic Lupus Erythematosus

OBJECTIVE

Screening for cognitive impairment (CI) in systemic lupus erythematosus (SLE) relies on the American College of Rheumatology (ACR) neuropsychological battery (NB). By studying the concurrent criterion validity, our goal was to assess the Montreal Cognitive Assessment (MoCA) as a screening tool for CI compared to the ACR-NB and to evaluate the added value of the MoCA to the Automated Neuropsychological Assessment Metrics (ANAM).

METHODS

A total of 285 adult SLE patients were administered the ACR-NB, MoCA, and ANAM. For the ACR-NB, patients were classified as having CI if there was a Z score of ≤-1.5 in ≥2 domains. The area under the curve (AUC) and sensitivities/specificities were determined. A discriminant function analysis was applied to assess the ability of the MoCA to differentiate between CI, undetermined CI, and non-CI patients.

RESULTS

CI was not accurately identified by the MoCA compared to the ACR-NB (AUC of 0.66). Sensitivity and specificity were poor at 50% and 69%, respectively, for the cutoff of 26, and 80% and 45%, respectively, for the cutoff of 28. The MoCA had a low ability to identify CI status. The addition of the MoCA to the ANAM led to improvement on the AUC by only 2.5%.

CONCLUSION

The MoCA does not have adequate concurrent criterion validity to accurately identify CI in patients with SLE. The low specificity of the MoCA may lead to overdiagnosis and concern among patients. Adding the MoCA to the ANAM does not substantially improve the accuracy of the ANAM. These results do not support using the MoCA as a screening tool for CI in patients with SLE.

Predictors of relapse of psychotic depression: Findings from the STOP-PD II randomized clinical trial

Psychotic depression has a high rate of relapse. The study aims were to identify a prediction model of risk of relapse of psychotic depression and examine whether predictors moderated the effect of treatment on relapse. One hundred and twenty-six men and women aged 18-85 years, who experienced sustained remission or near-remission of psychotic depression with sertraline plus olanzapine, participated in a 36-week randomized controlled trial that compared sertraline plus olanzapine with sertraline plus placebo in preventing relapse (NCT01427608). Cox regression analyses were performed to identify significant predictors of relapse and to model the combined role of significant predictors. Concordance statistic was calculated to determine the accuracy of the best fit multivariable models in predicting relapse. Finally, interaction terms were tested for each significant predictor to examine whether they moderated the effect of treatment on risk of relapse. Lifetime number of depressive episodes, severity of residual depressive symptoms at the time of randomization, and psychomotor disturbance both at acute enrollment when participants were depressed and at the time of randomization predicted risk of relapse. Multivariable models had 69-70% accuracy in predicting relapse. Psychomotor disturbance was associated with increased risk of relapse in the sertraline plus olanzapine group compared with sertraline plus placebo, whereas the other predictors did not moderate the effect of treatment on relapse. Future research is needed to determine whether a combination of clinical and biological variables can further increase the accuracy of prediction of relapse of psychotic depression.

Prevalence, causes, and consequences of moral distress in healthcare providers caring for people living with dementia in long-term care during a pandemic

Healthcare providers caring for people living with dementia may experience moral distress when faced with ethically challenging situations, such as the inability to provide care that is consistent with their values. The COVID-19 pandemic produced conditions in long-term care homes (hereafter referred to as 'care homes') that could potentially contribute to moral distress. We conducted an online survey to examine changes in moral distress during the pandemic, its contributing factors and correlates, and its impact on the well-being of care home staff. Survey participants (n = 227) working in care homes across Ontario, Canada were recruited through provincial care home organizations. Using a Bayesian approach, we examined the association between moral distress and staff demographics and roles, and characteristics of the long-term care home. We performed a qualitative analysis of the survey's free-text responses. More than 80% of care home healthcare providers working with people with dementia reported an increase in moral distress since the start of the pandemic. There was no difference in the severity of distress by age, sex, role, or years of experience. The most common factors associated with moral distress were lack of activities and family visits, insufficient staffing and high turnover, and having to follow policies and procedures that were perceived to harm residents with dementia. At least two-thirds of respondents reported feelings of physical exhaustion, sadness/anxiety, frustration, powerlessness, and guilt due to the moral distress experienced during the pandemic. Respondents working in not-for-profit or municipal homes reported less sadness/anxiety and feelings of not wanting to go to work than those in for-profit homes. Front-line staff were more likely to report not wanting to work than those in management or administrative positions. Overall, we found that increases in moral distress during the pandemic negatively affected the well-being of healthcare providers in care homes, with preliminary evidence suggesting that individual and systemic factors may intensify the negative effect.

Factor analysis of the CORE measure of psychomotor disturbance in psychotic depression: Findings from the STOP-PD II study

The CORE instrument is commonly used to measure psychomotor disturbance. We examined the factor structure of the CORE in 266 adults with an acute episode psychotic depression, a disorder with a high rate of psychomotor disturbance. Exploratory factor analysis identified a two-factor solution: Factor 1 corresponded to the CORE's retardation and non-interactiveness items and Factor 2 corresponded to its agitation items. Internal consistency was excellent for Factor 1 but questionable for Factor 2. These findings suggest that the CORE's retardation and non-interactiveness items should be combined in one subscale when assessing patients with an acute episode of psychotic depression.

Neuropsychiatric Systemic Lupus Erythematosus in Older Adults: Diagnosis and Management

Systemic lupus erythematosus (SLE) is a multisystem chronic autoimmune disease with variable clinical manifestations. Neuropsychiatric systemic lupus erythematosus (NPSLE) includes the neurologic syndromes of the central, peripheral and autonomic nervous system and the psychiatric syndromes observed in patients with SLE. Neuropsychiatric systemic lupus erythematosus events may present as an initial manifestation of SLE or may be diagnosed later in the course of the disease. Older adults with NPLSE include those who are ageing with known SLE and those with late-onset SLE. The diagnosis of NPSLE across the lifespan continues to be hampered by the lack of sensitive and specific laboratory and imaging biomarkers. In this review, we discuss the particular complexity of NPSLE diagnosis and management in older adults. We first discuss the epidemiology of late-onset NPSLE, then review principles of diagnosis of NPSLE, highlighting issues that are pertinent to older adults and that make diagnosis and attribution more challenging, such as atypical disease presentation, higher medical comorbidity, and differences in neuroimaging and autoantibody investigations. We also discuss clinical issues that are of particular relevance to older adults that have a high degree of overlap with SLE, including drug-induced lupus, cerebrovascular disease and neurocognitive disorders. Finally, we review the management of NPSLE, mainly moderate to high- dose glucocorticoids and immunosuppressants, again highlighting considerations for older adults, such as increased medication (especially glucocorticoids) adverse effects, ageing-related pharmacokinetic changes that can affect SLE medication management, medication dosing and attention to medical comorbidities affecting brain health.

Association between psychomotor disturbance and treatment outcome in psychotic depression: a STOP-PD II report

BACKGROUND

Little is known about the relationship between psychomotor disturbance (PMD) and treatment outcome of psychotic depression. This study examined the association between PMD and subsequent remission and relapse of treated psychotic depression.

METHODS

Two hundred and sixty-nine men and women aged 18-85 years with an episode of psychotic depression were treated with open-label sertraline plus olanzapine for up to 12 weeks. Participants who remained in remission or near-remission following an 8-week stabilization phase were eligible to participate in a 36-week randomized controlled trial (RCT) that compared the efficacy and tolerability of sertraline plus olanzapine (n = 64) with sertraline plus placebo (n = 62). PMD was measured with the psychiatrist-rated sign-based CORE at acute phase baseline and at RCT baseline. Spearman's correlations and logistic regression analyses were used to analyze the association between CORE total score at acute phase baseline and remission/near-remission and CORE total score at RCT baseline and relapse.

RESULTS

Higher CORE total score at acute phase baseline was associated with lower frequency of remission/near-remission. Higher CORE total score at RCT baseline was associated with higher frequency of relapse, in the RCT sample as a whole, as well as in each of the two randomized groups.

CONCLUSIONS

PMD is associated with poorer outcome of psychotic depression treated with sertraline plus olanzapine. Future research needs to examine the neurobiology of PMD in psychotic depression in relation to treatment outcome.

Relationships Among History of Psychosis, Cognition and Functioning in Later-Life Remitted Major Depression

OBJECTIVE

This study tested the hypotheses that, in older adults with remitted major depression, a history of psychotic features and poorer neuropsychological performance would be independently associated with poorer everyday functioning, but that neuropsychological performance would explain more of the variance in functioning than history of psychotic features.

METHODS

This cross-sectional study included 73 patients aged 50 years or older with remitted psychotic major depression or nonpsychotic major depression. The dependent variables were subjective and objective measures of function. The independent variables were history of psychotic features during one or more major depressive episodes in the previous 10 years and neuropsychological performance. Linear regression models examined the association of independent variables with function, controlling for pertinent covariates. Effect sizes were calculated for the magnitude of difference in function between the patient participants and an age- and gender-matched nonpsychiatric group, and distribution of functioning scores were compared between groups.

RESULTS

In separate models, history of psychotic features and poorer processing speed, executive function, and verbal learning were independently associated with poorer participant-reported functioning and performance-based functioning. However, the association of psychotic features with functioning was no longer statistically significant when tested in the same models as neuropsychological measures. Effect sizes of the difference in functioning between patients and the nonpsychiatric group were significantly larger for the remitted psychotic than the remitted nonpsychotic depression group; functioning scores were more heterogeneous in the remitted psychotic depression group.

CONCLUSION

Patients with remitted psychotic depression exhibit greater, and clinically important, impairment in everyday functioning than those with remitted nonpsychotic depression. Neuropsychological impairment appears to contribute to this relationship.

Relationship of Hair Cortisol with History of Psychosis, Neuropsychological Performance and Functioning in Remitted Later-Life Major Depression

INTRODUCTION

Major depressive disorder (MDD) is associated with hypothalamic-pituitary-adrenal axis dysfunction that may persist into remission. Preliminary evidence suggests that this dysfunction may be associated with impaired neuropsychological performance in remitted MDD. MDD with psychotic features ("psychotic depression") is associated with greater neuropsychological and functional impairment than nonpsychotic depression, including in remission. Therefore, the aim of this exploratory study was to examine the relationships among hair cortisol concentration (HCC) - a marker of longer term endogenous cortisol exposure - and history of psychotic features, neuropsychological performance, and functioning in remitted MDD.

METHODS

This cross-sectional study compared the relationship between HCC and (i) history of psychosis, (ii) neuropsychological performance, and (iii) everyday functioning in a group of 60 participants with remitted later-life MDD using Pearson's correlation coefficients. This study also measured HCC in a group of 36 nonpsychiatric volunteers to examine the clinical significance of HCC in the patient group.

RESULTS

There were no statistically significant correlations between HCC and history of psychotic features, neuropsychological performance, or functioning. Furthermore, there was no clinically meaningful difference in HCC between patients and nonpsychiatric volunteers.

CONCLUSION

This study is the first to examine HCC in psychotic depression. The results do not support the hypothesis that impaired neuropsychological performance, and everyday function in remitted psychotic depression is due to a sustained elevation of cortisol.

Exploring the Mental Health Needs of Persons With Autoimmune Diseases During the Coronavirus Disease 2019 Pandemic: A Proposed Framework for Future Research and Clinical Care

Although the coronavirus disease 2019 (COVID-19) pandemic has been associated with increased psychological distress globally, it poses unique challenges to persons who are potentially more vulnerable to its effects, including patients with autoimmune disease. In this article, we review the published literature and media reports to determine factors that may contribute to mental health challenges in persons with autoimmune disease. We then explore existing mental health interventions that have been developed for use in COVID-19 and in patients with autoimmune disorders in general. We identified several potential contributors to psychological distress in patients with autoimmune disease during the pandemic, as follows: feelings of discrimination related to societal response to COVID-19, fear of infection and uncertainty related to immunosuppressive medication, diminished access to usual care and resources, previous health-related trauma, and the exacerbating effect of social isolation. Drawing from existing literature, we synthesize the identified evidence to develop a proposed framework for researching and managing mental health challenges in autoimmune disease during the pandemic and its aftermath.

Functional Competence and Cognition in Individuals With Amnestic Mild Cognitive Impairment

OBJECTIVE

The objective of this study is to characterize functional competence (measure of assistance needed for independence) on Performance Assessment of Self-Care Skills (PASS) Cognitively Mediated Instrumental Activities of Daily Living (C-IADL), in individuals with amnestic mild cognitive impairment (aMCI). It aims to determine: (1) the association of functional competence on PASS C-IADL tasks with neurocognitive test performance in aMCI, (2) its ability to discriminate individuals with aMCI from healthy control (HC) individuals, and (3) its added value in discriminating aMCI from HC individuals when combined with neurocognitive test performance.

DESIGN

Cross-sectional secondary analysis of baseline data from a cohort of individuals enrolled in a clinical trial (NCT02386670).

SETTING

Five university-affiliated outpatient clinics in Toronto, Canada.

PARTICIPANTS

aMCI (N = 137) and HC (N = 51) participants, all aged 60 years or older.

METHODS

We assessed the relationship between functional competence on three C-IADL PASS tasks (shopping, bill paying, and checkbook balancing) and neurocognitive tests in 137 participants with aMCI using multiple linear regressions. Additionally, we constructed receiver operating characteristic curves to assess the role of PASS functional competence in discriminating between 137 aMCI and 51 HC participants.

RESULTS

Functional competence on PASS was significantly associated with tests of verbal memory, information processing speed, and executive function. It demonstrated 79% accuracy in discriminating aMCI from HC participants. Combining functional competence on PASS with individual neurocognitive tests significantly increased the discriminant accuracy of individual tests, and neurocognitive test scores combined with functional competence on PASS had the highest discriminant accuracy (94%).

CONCLUSION

Functional competence on PASS is predicted by the underlying cognitive deficits and possibly captures additional element of effort that could improve the diagnostic accuracy of aMCI when combined with neurocognitive tests. Thus, PASS appears to be a promising tool for assessment of functional competence in aMCI in clinical or research settings. J Am Geriatr Soc 68:1787-1795, 2020.

A Scoping Review of Literature on Sex and Gender Differences Among Dementia Spousal Caregivers

BACKGROUND AND OBJECTIVES

Sex and gender differences among dementia spousal caregivers have been investigated, but never systematically reviewed or synthesized. A synthesis of findings can help facilitate specificity in practice and in health policy development. As a first step towards such a synthesis, this scoping review reports the available evidence, identifies research gaps, and suggests possible directions for future research.

RESEARCH DESIGN AND METHODS

A scoping review methodology was used to identify articles, and to chart and analyze data. Systematic searches for published, empirical studies, with an explicit goal or hypothesis related to sex or gender differences were conducted in seven databases.

RESULTS

Sixty-one studies met inclusion criteria. Most (n = 45) were quantitative, cross-sectional studies. Caregivers included in the studies were generally 61-70 years old, Caucasian, middle-class, and highly educated. The most extensively investigated differences are: depression, burden, objective physical health, and informal supports.

DISCUSSION AND IMPLICATIONS

This scoping review is the first to summarize and critique the research on sex and gender differences that are specific to dementia spousal caregivers. The review can be used by researchers to make decisions regarding future systematic reviews and primary studies. To further strengthen the evidence base, future studies may benefit from including more caregivers of ethnic minorities, using more qualitative, longitudinal, or experimental designs, and focusing on variables needed to inform caregiving models and theories. Overall, this scoping review contributes to furthering gender-sensitive practices and policies that are better tailored to the specific needs of this population.

Health-related quality of life in remitted psychotic depression✰

BACKGROUND

Some patients with major depression continue to demonstrate deficits in health-related quality of life (HRQL) following remission. No data exist, however, regarding HRQL in remitted psychotic depression. In this study, we aimed to characterize HRQL in patients with psychotic depression receiving controlled pharmacotherapy.

METHODS

This is a secondary analysis of a randomized controlled trial studying continuation pharmacotherapy of psychotic depression. We compared participants' HRQL (measured using the SF-36) between baseline and remission and to population norms. We also compared SF-36 scores stratified by age and gender and examined the correlation between SF-36 scores and medical burden, depression score and neuropsychological performance in remission.

RESULTS

SF-36 scores were significantly lower than population norms at baseline, but improved following remission to the level of population norms. Neither SF-36 scores nor magnitude of SF-36 improvement differed substantially between genders or between younger and older participants. In remission, depression scores were correlated with most SF-36 scales and medical burden was correlated with SF-36 scales measuring physical symptoms. Neuropsychological measures were generally not correlated with SF-36 scores.

LIMITATIONS

This study was a secondary analysis not powered specifically to measure HRQL as an outcome variable and the SF-36 was the only HRQL measure used.

CONCLUSIONS

Participants with remitted psychotic depression demonstrated levels of HRQL comparable to population norms, despite marked impairment in HRQL when acutely ill. This finding suggests that, when treated in a rigorous manner, many patients with this severe illness improve significantly from a clinical and HRQL perspective.

Stabilization treatment of remitted psychotic depression: the STOP-PD study

OBJECTIVE

We conducted a 12-week double-blind study of stabilization pharmacotherapy in patients with remitted psychotic depression (PD).

METHODS

Seventy-one persons aged 18 years or older who had achieved remission of PD when randomized to either olanzapine plus sertraline or olanzapine plus placebo were continued on the double-blind treatment associated with remission. Symptoms of depression and psychosis, and weight, were measured once every 4 weeks. Cholesterol, triglycerides, and glucose were measured at stabilization phase baseline and Week 12/termination.

RESULTS

The effect of treatment did not significantly change with time for depression, weight, or metabolic measures in the stabilization phase. Eight of the 71 participants (11.3%; 95% CI: 5.8, 20.7) experienced a relapse of major depression, psychosis, or both. Treatment groups did not differ in the frequency of relapse. In the entire study group, the adjusted estimate for change in weight was an increase of 1.66 kg (95% CI: 0.83, 2.48) and the adjusted estimate for change in total cholesterol was a decrease of 14.8 mg/dL (95% CI: 3.5, 26.1) during the 12-week stabilization phase; the remaining metabolic measures did not significantly change.

CONCLUSION

Continuation of acute treatment was associated with stability of remission.

A Systematic Review of the Measurement of Function in Late-Life Depression

Recovery of everyday premorbid function is a primary goal in the treatment of depression. Measurement of function is an important part of achieving this goal. A multitude of scales have been used to measure function in depression, reflecting the complex, multifaceted nature of functioning. Currently, however, there are no evidence-based guidelines to assist the researcher or clinician in deciding which instruments are best suited to measure function in late-life depression (LLD). Thus, the aims of this study are to 1) systematically review and identify the instrumental activities of daily living and social functioning assessment instruments used in the LLD literature; 2) identify and appraise the measurement properties of these instruments; and 3) suggest factors for LLD researchers and clinicians to consider when selecting functional assessment instruments and make pertinent recommendations. We performed a systematic review of MEDLINE and CINAHL to identify studies that i) incorporated subjects aged 60 years and older with a depressive disorder, and ii) measured instrumental activities of daily living and/or social functioning. Our search yielded 21 functional assessment instruments. Only two of these instruments, the 36-Item Short Form Survey and the Performance Assessment of Self-Care Skills, have formal validation data in LLD. Four additional instruments, although not formally validated, have relevant data regarding their measurement properties. The primary finding of this study is that very few functional assessment instruments have been validated in LLD, and the available measurement property data are mixed; there is a need for further instrument validation in late-life depression. With this caveat in mind, we provide evidence-based suggestions for researchers and clinicians assessing functioning in LLD patients.

The Association of Baseline Suicidality With Treatment Outcome in Psychotic Depression

OBJECTIVE

To examine the association between baseline suicidality and outcome of major depression in a randomized controlled trial of the pharmacotherapy of psychotic depression and to explore the interaction of suicidality, randomized treatment assignment, and depression outcome.

METHODS

This study was a secondary analysis of data from 258 persons aged 18 years or older with DSM-IV-defined major depressive disorder with psychotic features who participated in a 12-week randomized controlled trial (RCT) comparing olanzapine plus sertraline with olanzapine plus placebo (the Study of the Pharmacotherapy of Psychotic Depression [STOP-PD], which ran from 2002 to 2007). The independent variable was baseline suicidality, defined by 4 groups (suicide attempt in the current episode, active suicidal ideation, passive suicidal ideation, and no suicidality). The outcome variables were change in 16-item Hamilton Depression Rating Scale (HDRS₁₆) total score (excluding the suicide item) over time and remission of psychotic depression over time.

RESULTS

Suicidality groups did not significantly differ on baseline HDRS₁₆ total score. Baseline suicidality group was significantly associated with change in HDRS₁₆ score over time in the sample as a whole (F₃,₁₃₉₄ = 8.17; P < .0001), but was not significantly associated with probability of remission over time. Among participants assigned to olanzapine and placebo, persons with no suicidality had a significantly greater reduction in HDRS₁₆ total score compared to those with passive suicidal ideation (7.5-point difference in change scores between the 2 groups; 95% CI, 4.3-10.7 t₁₃₉₄ = 4.61, P < .0001), active suicidal ideation (4.4 points; 95% CI, 1.4-7.4; t₁₃₉₄ = 2.85, P = .0176), or suicide attempts (6.1 points; 95% CI, 2.8-9.4; t₁₃₉₄ = 3.66, P = .0015). The 12-week change from baseline in HDRS₁₆ score for patients with no suicidality was not significantly different between the 2 treatment arms. However, the 12-week HDRS₁₆ improvement was significantly greater in the olanzapine plus sertraline arm, compared with the olanzapine plus placebo arm, for patients with suicide attempts (8.7-point difference in change scores between the 2 groups; 95% CI, 5.1-12.4; t₁₃₉₄ = 4.75, P < .0001), active suicidal ideation (8.1 points; 95% CI, 4.5-11.7; t₁₃₉₄ = 4.38, P < .0001), or passive suicidal ideation (5.7 points; 95% CI, 2.2-9.2; t₁₃₉₄ = 3.23, P = .0012), respectively.

CONCLUSIONS

Baseline suicidality predicted worse acute treatment outcome of psychotic depression. However, participants with suicidality had a better outcome when treated with the combination of olanzapine and sertraline than when treated with olanzapine plus placebo.

TRIAL REGISTRATION

ClinicalTrials.gov identifier: NCT00056472​.