Publications by authors named "Matthew C Sullivan"

Introduction: Substance use disorder (SUD) and problematic substance use are global public health concerns with significant multifaceted implications for physical health and psychosocial well-being. The impact of SUD extends beyond the individual to their family while imposing financial and social burdens on the community. Though family-centred interventions have shown promise in addressing SUD, their implementation and impact in low-income and middle-income countries (LMICs) remain underexplored.

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Background: Psycho-social experiences including shame and experienced and internalized stigma have been associated with substance use, HCV infection, and reluctance to disclose HCV status and pursue treatment. These psycho-social barriers have been examined independently for many chronic diseases, including HCV, but to our knowledge have not been quantitatively explored in a large multi-site US-based sample of people who inject drugs (PWID) in HCV treatment.

Methods: We examine baseline relationships with HCV-stigma and engagement across the HCV treatment cascade as well as baseline and longitudinal relationships between shame and engagement across the HCV treatment cascade including treatment initiation, adherence, completion, and sustained virologic response (SVR) among a multi-site sample of PWID with HCV, where N=755 were randomized to the pragmatic trial comparing HCV treatment outcomes in modified directly observed treatment (mDOT) or patient navigation, and N=623 initiated treatment.

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This study investigated the relationship between sleep disturbance and somatic symptoms among adolescents residing on a psychiatric inpatient unit. Given the evidence that sleep disturbance may precede the onset of depression and anxiety and the clear associations between mood and somatic symptoms, depression and anxiety were considered as potential mediators of this relationship. Gender was tested as a potential moderator of the relationship between sleep disturbance and depression and anxiety, respectively.

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Readmission of psychiatric inpatients is highly prevalent and places a significant financial burden on the healthcare system. Rehospitalisation is often used as a metric of quality of care in psychiatric settings, but little is known about how specific personality traits impact readmission in adult psychiatric inpatients. A convenience sample of 94 adults (mean age = 36.

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Once-daily oral pre-exposure prophylaxis (PrEP) is highly effective for preventing HIV transmission, but adherence can be challenging for men who have sex with men (MSM) who use substances. A novel method for directly measuring ingestion events is a digital pill system (DPS), which comprises an ingestible radiofrequency emitter that signals a wearable Reader device upon PrEP ingestion, relaying ingestion data to a wearable Reader device and then to a smartphone application. Qualitative interviews were conducted with 15 MSM with non-alcohol substance use following an open-label pilot demonstration trial involving use of the DPS to measure PrEP adherence for 90 days.

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Objective: Vaccination against coronavirus disease 2019 (COVID-19) is a promising avenue for arresting the COVID-19 pandemic, yet suboptimal rates of vaccine uptake in at-risk groups may hinder efficacy and worsen existing health disparities. People with opioid use disorder (OUD) are likely to face increased vulnerability to COVID-19 due to a confluence of biological and social risk factors. We sought to assess factors associated with willingness to vaccinate against COVID-19 in people with OUD.

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Background: Adherence to once daily oral preexposure prophylaxis (PrEP) for HIV prevention can be challenging for men who have sex with men (MSM) with substance use. Digital pill systems (DPS) comprise a radiofrequency emitter integrated into a gelatin capsule containing PrEP, which transmits data to a wearable Reader following ingestion, thereby enabling direct, real-time adherence measurement. This study evaluated the feasibility, acceptability, and accuracy of a DPS to measure PrEP adherence.

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The efficacy of pre-exposure prophylaxis (PrEP) for HIV prevention in men who have sex with men (MSM) is contingent upon consistent adherence. Digital pill systems (DPS) provide real-time, objective measurement of ingestions and can inform behavioral adherence interventions. Qualitative feedback was solicited from MSM who use stimulants to optimize a cognitive behavioral therapy (CBT)-based intervention (LifeSteps), used in conjunction with a DPS, to promote PrEP adherence (PrEPSteps).

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Mental health symptoms may compromise health-related quality of life (HRQOL), including among men who have sex with men (MSM) living with HIV, who experience high rates of trauma and other stressors. This study sought to examine the relative contributions of post-traumatic stress disorder (PTSD) symptoms, depression symptoms, and biological indices of HIV disease status on HRQOL in this population. Participants were 79 MSM with HIV (49% White; 35% Black; 8% Hispanic/Latinx) with trauma histories (52% met current PTSD diagnostic criteria).

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Article Synopsis
  • The study examines the impact of the COVID-19 pandemic on individuals with opioid use disorder (OUD), focusing on their health behaviors and overall well-being.
  • Researchers surveyed 110 individuals undergoing methadone treatment for OUD, finding increases in mental health issues, such as depression and anxiety, alongside financial instability, especially among racial and ethnic minorities.
  • The results suggest a need for treatment providers to create culturally sensitive interventions, collaborating with community organizations to address the specific challenges faced by people with OUD during the pandemic.
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Article Synopsis
  • Cognitive dysfunction is prevalent among individuals seeking medication for opioid use disorder, which can impede their treatment and recovery services.
  • This study developed a brief Cognitive Dysfunction Risk Score (CDRS) using demographic and medical data to effectively identify mild cognitive impairment in patients receiving methadone treatment.
  • The CDRS shows promise in accurately identifying those at risk for cognitive issues, with a sensitivity of 87.5%, and may streamline patient assessment in resource-limited environments, although further validation is needed.
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Background: Digital pill systems (DPSs), which comprise ingestible radiofrequency sensors integrated into a gelatin capsule that overencapsulates a medication, can directly measure ingestion events.

Objective: Teaching users to operate a DPS is vital to ensure the collection of actionable ingestion and adherence data. In this study, we aim to develop and pilot a training program, grounded in the Technology Acceptance Model, to instruct individuals on DPS operation.

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Background: Pre-exposure prophylaxis (PrEP) can sharply reduce HIV transmission risk, yet has not been widely adopted among those at highest risk for HIV, including Black men who have sex with men (BMSM). To better understand the evolving landscape of PrEP uptake in this at-risk population, we sought to examine psychosocial factors associated with PrEP uptake in a sample of BMSM residing in the Atlanta, GA, area.

Method: BMSM were recruited through online social media, LGBT venues, and participant referral, and self-reported demographic and psychosocial information via computer-assisted self-interview.

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Background: Inpatient psychiatric hospitals provide an important point of care for assessing and stabilizing substance use and for facilitating linkage to appropriate treatment. Toxicology screening provides a key measure of substance use yet may miss many cases of substance use because of variable windows of detection and the limited scope of substances assessed. This study assesses the utility of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) Level 2 Substance Use screener as a supplemental tool for identifying substance use by self-report within an inpatient psychiatric hospital setting.

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People living with HIV (PLWH) face difficult decisions about disclosing their HIV status to new sexual partners. Alcohol and other drug use could impact these decision-making processes and subsequent sexual risk behavior. We sought to examine the event-level relationships between substance use, HIV disclosure, and condom use in PLWH and their first-time HIV-negative or unknown status sexual partners.

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Objective: The goal of this study was to assess the relationship between sleep problems and somatic symptoms in a sample of adult psychiatric inpatients and evaluate the utility of the Patient-Reported Outcomes Measurement Information System® (PROMIS®) Sleep Disturbance Measure as a predictor of physical health symptom severity within this population.

Method: Ninety-five adults were assessed following admission to an inpatient psychiatric hospital. Demographic and medical information were extracted via chart review.

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Objective: Though there is no consensus on its efficacy, knee osteoarthritis is symptomatically managed with intra-articular hyaluronic acid (IAHA). Recent reports suggest that IAHA may delay the need for total knee replacement, with the magnitude of delay proportional to the number of injection series. However, the safety of repeated injection series is reported to vary between commercial products.

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Objective: To develop a new evidence-based, pharmacologic treatment guideline for rheumatoid arthritis (RA).

Methods: We conducted systematic reviews to synthesize the evidence for the benefits and harms of various treatment options. We used the Grading of Recommendations Assessment, Development and Evaluation (GRADE) methodology to rate the quality of evidence.

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Objective: To develop a new evidence-based, pharmacologic treatment guideline for rheumatoid arthritis (RA).

Methods: We conducted systematic reviews to synthesize the evidence for the benefits and harms of various treatment options. We used the Grading of Recommendations Assessment, Development and Evaluation (GRADE) methodology to rate the quality of evidence.

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Background: We sought to test the hypothesis that antidepressants (ADs) may show preferential efficacy and safety among patients with type II bipolar disorder (BD, BD-II) more than patients with type I BD (BD-I).

Methods: Patients with Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, BD-I (n = 21) and BD-II (n = 49) in acute major depressive episodes were treated with ADs plus mood stabilizers to euthymia sustained for 2 months and then randomized openly to continue or discontinue ADs for up to 3 years. Outcomes were episode recurrences and changes in standardized symptom ratings.

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Background: Placebo controls are essential in evaluating the effectiveness of medical treatments. Although it is unclear whether different placebo interventions for osteoarthritis vary in efficacy, systematic differences would substantially affect interpretation of the results of placebo-controlled trials.

Objective: To evaluate the effects of alternative placebo types on pain outcomes in knee osteoarthritis.

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Objective: To assess the relative efficacy of intra-articular hyaluronic acid (IAHA) in comparison with non-steroidal anti-inflammatory drugs (NSAIDs) for knee osteoarthritis (OA).

Methods: We searched Medline, EMBASE, Google Scholar, ISI Web of Science, and Cochrane Database from inception until February 2013. Randomized controlled trials comparing HA with NSAIDs for knee OA were included if they reported at least one pain outcome.

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Objectives: Although efficacious treatments for mood disorders are available in primary care, under-diagnosis is associated with under-treatment and poorer outcomes. This study compares the accuracy of self-administered screening tests with routine general practitioner (GP) assessment for detection of current mood disorder.

Methods: 197 consecutive patients attending primary care centres in Santiago, Chile enrolled in this cross-sectional study, filling out the Patients Health Questionnaire-9 (PHQ-9) for depression and the Mood Disorder Questionnaire (MDQ) for bipolar disorder, after routine GP assessment.

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