Publications by authors named "Quilty L"

Interpersonal psychotherapy (IPT) and antidepressant medications are both first-line interventions for adult depression, but their relative efficacy in the long term and on outcome measures other than depressive symptomatology is unknown. Individual participant data (IPD) meta-analyses can provide more precise effect estimates than conventional meta-analyses. This IPD meta-analysis compared the efficacy of IPT and antidepressants on various outcomes at post-treatment and follow-up (PROSPERO: CRD42020219891).

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Introduction: People with lived and living experience (PWLLE) and family members (F) can engage in mental health and substance use health research beyond participant roles, as advisors, co-researchers, equal partners and research leads. However, implementing meaningful and effective engagement is complex.

Methods: This article profiles five research initiatives involving different lived experience engagement structures, situated in a single tertiary care teaching and research hospital.

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Article Synopsis
  • Current antidepressants show limited effectiveness, prompting research to identify biological targets for new treatments and understand their mechanisms.
  • The study utilized EEG data from two Canadian trials to examine how changes in brain wave patterns (neural oscillations) correlate with symptom improvement in patients undergoing pharmacological and CBT treatments.
  • Findings indicate that early increases in theta waves and late changes in delta and alpha waves are linked to better treatment outcomes, with common patterns observed in both treatment methods, enhancing our understanding of how depression treatments work.
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Article Synopsis
  • Major depressive disorder (MDD) affects about 250 million people globally, highlighting the need for effective treatment strategies that consider factors like chronotype (individual preference for morning or evening activities) and the timing of therapy sessions.
  • A study involving 227 outpatients diagnosed with MDD examined how their chronotype and the time of day they received cognitive behavioral therapy influenced their post-treatment depression severity.
  • Findings showed increases in morningness for those in the afternoon and evening therapy groups, with a significant connection between changes in morningness and depression severity for the afternoon group, although the lack of a control group limits the study's conclusions.
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Adult playfulness describes the personality of the quick initiation and strong intensity of enjoyable experiences coupled with the frequency of engaging in playful behaviors. In addition to examining the reliability and validity of the Short Measure for Adult Playfulness (SMAP), we compared the psychometric properties of the SMAP across (a) 4- and 7-point answer formats; (b) German and English language versions; and (c) gender. The SMAP and criterion validity measures were distributed across three independent samples from Canada ( = 1,177) and a German sample ( = 660).

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Background: Substance use disorders (SUDs) are pressing global public health problems. Executive functions (EFs) are prominently featured in mechanistic models of addiction. However, there remain significant gaps in our understanding of EFs in SUDs, including the dimensional relationships of EFs to underlying neural circuits, molecular biomarkers, disorder heterogeneity, and functional ability.

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In this study, we compare the incremental predictive capacities of the , Section II personality disorders (SII-PDs) with Section III trait domains of the Alternative Model of Personality Disorders (AMPD) in a psychiatric outpatient sample ( = 185). To this end, a series of hierarchical regression analyses was conducted in which the 10 SII-PDs and the five AMPD trait domains served as the predictor variables and five areas of clinical dysfunction as the criterion variables. Two models for each criterion were tested.

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Background: Opioid use disorder (OUD) has arguably the highest mortality rate of mental health conditions; opiate-related deaths are identified as the number one cause of accidental deaths in Canada and the United States. Specialized care for OUD is often described as lacking, fractured, and with frequent periods of disengagement. Digital health strategies may support connection to evidence-based resources even during periods of disengagement.

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Background: A critical challenge in the study and management of major depressive disorder (MDD) is predicting relapse. We examined the temporal correlation/coupling between depression and anxiety (called Depression-Anxiety Coupling Strength, DACS) as a predictor of relapse in patients with MDD.

Methods: We followed 97 patients with remitted MDD for an average of 394 days.

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Objectives: Heavy alcohol and drug use is reported by a substantial number of Canadians; yet, only a minority of those experiencing substance use difficulties access specialized services. Computer-Based Training for Cognitive Behavioural Therapy (CBT4CBT) offers a low-cost method to deliver accessible and high-quality CBT for substance use difficulties. To date, CBT4CBT has primarily been evaluated in terms of quantitative outcomes within substance use disorder (SUD) samples in the United States.

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Background: The Canadian Network for Mood and Anxiety Treatments (CANMAT) last published clinical guidelines for the management of major depressive disorder (MDD) in 2016. Owing to advances in the field, an update was needed to incorporate new evidence and provide new and revised recommendations for the assessment and management of MDD in adults.

Methods: CANMAT convened a guidelines editorial group comprised of academic clinicians and patient partners.

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Objective: Alexithymia is characterized by difficulty identifying and/or describing emotions, reduced imaginal processes, and externally oriented thinking. High levels of alexithymia may increase the challenge of supporting individuals with co-occurring depression and hazardous alcohol use. This secondary analysis sought to investigate whether or not alexithymia moderated the outcomes of an online intervention for depression and alcohol use.

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Purpose: This study aims to understand the association between emotional intelligence, perceived social support, and psychological distress (i.e., anxiety, depression, stress) in women with cancer at different stages.

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Background: People with alcohol and substance use disorders (SUDs) often have underlying difficulties in regulating emotions. Although dialectical behavioral therapy is effective for SUDs, it is often difficult to access. Self-guided, internet-delivered dialectical behavioral therapy (iDBT) allows for expanded availability, but few studies have rigorously evaluated it in individuals with SUDs.

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Identifying clinically relevant predictors of depressive recurrence following treatment for Major Depressive Disorder (MDD) is critical for relapse prevention. Implicit self-depressed associations (SDAs), defined as implicit cognitive associations between elements of depression (e.g.

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Alcohol is one of the most widely used substances. Alcohol use accounts for 5.1% of the global disease burden, contributes substantially to societal and economic costs, and leads to approximately 3 million global deaths yearly.

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Human contact through physical touch is a core element in social bonding, which facilitates psychosocial well-being. Touch avoidance is an individual disposition that may prevent individuals from engaging in or benefiting from physical touch. The present study recruited 450 Italian participants (51.

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Behavioral economic demand for cannabis is robustly associated with cannabis consumption and cannabis use disorder (CUD). However, few studies have examined the processes underlying individual differences in the relative valuation of cannabis (i.e.

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The Cannabis Use Disorders Identification Test Revised (CUDIT-R) is a widely used screening tool. However, its utility in screening for cannabis use disorder (CUD) among young adults requires further investigation. The current study evaluated the accuracy of the CUDIT-R in distinguishing between young adults with and without CUD.

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Monitoring sleep and activity through wearable devices such as wrist-worn actigraphs has the potential for long-term measurement in the individual's own environment. Long periods of data collection require a complex approach, including standardized pre-processing and data trimming, and robust algorithms to address non-wear and missing data. In this study, we used a data-driven approach to quality control, pre-processing and analysis of longitudinal actigraphy data collected over the course of 1 year in a sample of 95 participants.

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Background: Rumination is strongly associated with depressive symptom severity and course. However, changes in rumination during outpatient cognitive behavioral therapy (CBT), and their links to baseline features such as distress tolerance and clinical outcomes, have received limited attention.

Methods: 278 outpatients with depression received group or individual CBT.

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Background: People with depression select avoidant emotion regulation (ER) strategies more often than engagement strategies. While psychotherapy improves ER strategies, examining the week-to-week changes in ER and their relationship to clinical outcomes is warranted to understand how these interventions work. This study examined the changes in six ER strategies and depressive symptoms during virtual psychotherapy.

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