Abstract:
Background:Recent meta-analyses reported placebo response rate in antidepressant trials to be stable since the 1970s. These meta-analyses however were limited in considering only linear time trends, assessed trial-level covariates based on single-model hypothesis testing only, and did not adjust for small-study effects (SSE), a well-known but not yet formally assessed bias in antidepressant trials. Methods:This secondary meta-analysis extends previous work by modeling nonlinear time trends, assessing the relative importance of trial-level covariates using a multimodel approach, and rigorously adjusting for SSE. Outcomes were placebo efficacy (continuous), based on the Hamilton Depression Scale, and placebo response rate. Results:Results suggested that any nonlinear time trends in both placebo efficacy (continuous) and response rate were best explained by SSE. Adjusting for SSE revealed a significant gradual increase in placebo efficacy (continuous) from 1979 to 2014. A similar observation was made for placebo response rate, but did not reach significance due higher susceptibility to SSE. By contrast, trial-level covariates alone were found to be insufficient in explaining time trends. Conclusion:The present findings contribute to the ongoing debate on antidepressant placebo outcomes and highlight the need to adjust for bias introduced by SSE. The results are of clinical relevance because SSE may affect the evaluation of success or failure in antidepressant trials.
journal_name
Front Psychiatryjournal_title
Frontiers in psychiatryauthors
Holper Ldoi
10.3389/fpsyt.2020.00633subject
Has Abstractpub_date
2020-07-28 00:00:00pages
633issn
1664-0640journal_volume
11pub_type
abstract::Over the past years, there has been a growing interest in the association between lifestyle psychosocial interventions, severe mental illness, and suicide risk. Patients with severe mental disorders have higher mortality rates, poor health states, and higher suicide risk compared to the general population. Lifestyle b...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章,评审
doi:10.3389/fpsyt.2018.00567
更新日期:2018-11-06 00:00:00
abstract::In the brain of female mammals, including humans, a number of physiological and behavioral changes occur as a result of sex hormone exposure. Estradiol and progesterone regulate several brain functions, including learning and memory. Sex hormones contribute to shape the central nervous system by modulating the formati...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章,评审
doi:10.3389/fpsyt.2015.00165
更新日期:2015-11-20 00:00:00
abstract::Several studies investigated the role of resilience as a mediating factor for psychopathological phenotypes. The aim of the current study is to explore the putative role of resilience as a mediator between different vulnerability factors and depressive symptoms. One hundred and fifty patients with a major depressive d...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.00010
更新日期:2020-02-28 00:00:00
abstract::Biomarkers are of interest as potential diagnostic and predictive instruments in personalized medicine. We present the first urinary metabolomics biomarker study of childhood aggression. We aim to examine the association of urinary metabolites and neurotransmitter ratios involved in key metabolic and neurotransmitter ...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.00165
更新日期:2020-03-31 00:00:00
abstract::Disrupted white matter (WM) integrity in the anterior thalamic radiation (ATR) has been identified in individuals with bipolar disorder (BD). We explored whether structural WM aberration in the ATR could be visually evaluated by diffusion tensor tractography (DTT). The study comprised 114 participants, including 57 pa...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2018.00522
更新日期:2018-10-24 00:00:00
abstract::Objective: We previously found that chronic ketamine usages were associated with various psychotic and cognitive symptoms mimicking schizophrenia. The blockade of the NMDA receptor and subsequent nitric oxide synthase 1 (NOS1) dysfunction were found to be closely correlated with schizophrenia including NOS1 gene polym...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.580771
更新日期:2020-12-23 00:00:00
abstract:Background:Depression is pervasive in the military context and is likely to elicit lasting negative effects on health. Based on interpersonal models, social-interpersonal stressors are significantly associated with the development and maintenance of depression. However, little is known about the mechanisms by which the...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.00447
更新日期:2020-06-18 00:00:00
abstract::This study explored how different forms of reward-based decision-making are associated with pathological gambling (PG) among abstinent individuals with prior dependence on different classes of drugs. Participants had lifetime histories of either "pure" heroin dependence (n = 64), "pure" amphetamine dependence (n = 51)...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2018.00239
更新日期:2018-06-05 00:00:00
abstract:BACKGROUND:Electroconvulsive therapy (ECT) is effective in the treatment of major depressive disorder and schizophrenia in patients who are drug-naïve or less-receptive to antipsychotic drugs. Several studies have discussed the correlation between patient characteristics, input-current volume, and seizure duration. Acc...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2013.00166
更新日期:2013-12-23 00:00:00
abstract::Background: COVID-19 affects not only patients' physical health but also their mental health. For the general public, although their physical health may not be directly affected, their mental health may be affected by stress, anxiety, and social panic caused by COVID-19. Controlling the pandemic should focus on not on...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.567119
更新日期:2020-11-12 00:00:00
abstract::Excessive glutamate release has been linked to stress and many neurodegenerative diseases. Evidence indicates abnormalities of glutamatergic neurotransmission or glutamatergic dysfunction as playing an important role in the development of many major psychiatric disorders (e.g., schizophrenia, bipolar disorder, and maj...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章,评审
doi:10.3389/fpsyt.2018.00767
更新日期:2019-01-24 00:00:00
abstract:Objectives:Deviations from typical word use have been previously reported in clinical depression, but language patterns of mild depression (MD), as distinct from normal sadness (NS) and euthymic state, are unknown. In this study, we aimed to apply the linguistic approach as an additional diagnostic key for understandin...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2018.00105
更新日期:2018-04-10 00:00:00
abstract::Cognitive performance at illness onset may predict outcomes in first-episode psychosis (FEP), and the change in cognition may associate with clinical changes. Cognitive testing was administered to 54 FEP participants 2 months after entering treatment and to 39 participants after 1 year. We investigated whether baselin...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.603933
更新日期:2020-12-04 00:00:00
abstract::The aim of this study is to explore the changes and clinical significance of serum C3, C4, hypersensitive C-reactive protein (hsCRP) and uric acid (UA) in patients of bipolar disorder (BD). In this case-control study, we recruited 141 BD patients from The Second Xiangya Hospital, Central South University, and 151 age ...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2018.00381
更新日期:2018-08-21 00:00:00
abstract:Background:Neuropsychological studies have revealed that patients with schizophrenia (SZ) have facial recognition difficulties and a reduced visual evoked N170 response to human faces. However, detailed neurophysiological evidence of this face processing deficit in SZ with a higher spatial resolution has yet to be acqu...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.554844
更新日期:2020-09-03 00:00:00
abstract::Cogmed Working Memory Training (CWMT), an online cognitive training program developed for children, is an increasingly popular non-pharmacological intervention for ADHD amongst all ages, despite limited supporting evidence. The initial objective of the present work was to examine the short- and long-term impacts of CW...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2018.00388
更新日期:2018-08-28 00:00:00
abstract:Background:Previous studies have revealed the efficacy of metacognitive training for schizophrenia. However, the underlying mechanisms of metacognitive training on brain function alterations, including the default-mode network (DMN), remain unknown. The present study explored treatment effects of metacognitive training...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.00234
更新日期:2020-03-27 00:00:00
abstract:Background:Opiate addiction is a major health problem in many countries. A crucial component of the medical treatment is the management of highly aversive opiate withdrawal signs, which may otherwise lead to resumption of drug taking. In a medication-assisted treatment (MAT), methadone and buprenorphine have been imple...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.00411
更新日期:2020-05-07 00:00:00
abstract::Baclofen, particularly high-dose baclofen, has recently emerged as a treatment of major interest for alcohol-dependence. However, baclofen has many potentially dangerous side effects, and the maximal dose of baclofen that may be used is a matter of discussion. Here, the author analyses the medical charts of the last 1...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2014.00143
更新日期:2014-10-10 00:00:00
abstract::The dark triad (DT) traits-psychopathy, narcissism and Machiavellianism-have collectively been linked to reduced empathy and increased aggression; however, their association with distinct empathic subtypes remains unclear; and unique links to indirect relational aggression (IRA) have not been delineated. Moreover, whe...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2019.00095
更新日期:2019-03-12 00:00:00
abstract::This study compares the impact of repeated injections of baclofen (an agonist of GABAB receptors) or diazepam (a benzodiazepine having an agonist action on GABAA receptors) given during the alcohol-withdrawal period on the stress-induced restoration of alcohol-seeking behavior and hypothalamic-pituitary-adrenal (HPA) ...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2019.00238
更新日期:2019-04-16 00:00:00
abstract:INTRODUCTION:Ruminative (abstract verbal) processing during recall of aversive autobiographical memories may serve to dampen their short-term affective impact. Experimental studies indeed demonstrate that verbal processing of non-autobiographical material and positive autobiographical memories evokes weaker affective r...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2017.00082
更新日期:2017-05-30 00:00:00
abstract::Objective: During the outbreak of the COVID-19 epidemic in China, breast cancer (BC) patients and healthcare workers faced several challenges, resulting in great psychological stress. We measured the psychological status of BC patients and female nurses and compared the severity within the two groups at the peak time-...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2020.559701
更新日期:2020-12-15 00:00:00
abstract::We use auditory verbal hallucinations (AVH) to illustrate the challenges in defining and assessing target engagement in the context of transcranial direct current stimulation (tDCS) for psychiatric disorders. We defined the target network as the cluster of regions of interest (ROIs) that are consistently implicated in...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2018.00048
更新日期:2018-02-22 00:00:00
abstract::Several studies support currently the hypothesis that autism etiology is based on a polygenic and epistatic model. However, despite advances in epidemiological, molecular and clinical genetics, the genetic risk factors remain difficult to identify, with the exception of a few chromosomal disorders and several single g...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章,评审
doi:10.3389/fpsyt.2014.00053
更新日期:2014-08-04 00:00:00
abstract::Psychological stress is recognized as a major modifiable risk factor for adult non-communicable disease (NCD) that includes depression, type 2 diabetes mellitus, and cardiovascular disease. Dysregulation of hypothalamic-pituitary-adrenal (HPA) axis activity resulting in either exaggerated or blunted cortisol responses...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章,评审
doi:10.3389/fpsyt.2019.00795
更新日期:2019-10-29 00:00:00
abstract::Individuals with schizophrenia, particularly those with passivity symptoms, may not feel in control of their actions, believing them to be controlled by external agents. Cognitive operations that contribute to these symptoms may include abnormal processing in agency as well as body representations that deal with body ...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2014.00126
更新日期:2014-09-10 00:00:00
abstract::The One-to-One program aims to reduce criminal recidivism among prisoners shortly awaiting release, and among probationers. Of 1,484 program participants in Sweden, 776 contained adequate data for analysis. Pre- and post-program scores were available for the Alternative Thinking Test, Levenson's Locus of Control Scale...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2019.00811
更新日期:2019-11-29 00:00:00
abstract::The prevalence of alcohol abuse among patients treated in accident and emergency departments (A&E) is considered as substantial. This paper is a narrative review of studies investigating the effectiveness of brief interventions (BI) for hazardous and harmful alcohol consumption in A&E. A&E departments in hospitals (an...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章,评审
doi:10.3389/fpsyt.2014.00152
更新日期:2014-11-03 00:00:00
abstract::Background: Australia is a high-income country with increasing income inequality. It is unclear whether Australia's well-developed mental healthcare system is making a difference to population mental health and the Federal Government has targeted outcomes accountability in service funding strategies. In high-income co...
journal_title:Frontiers in psychiatry
pub_type: 杂志文章
doi:10.3389/fpsyt.2018.00536
更新日期:2018-10-26 00:00:00