Predictors of therapeutic alliance, treatment feedback, and clinical outcomes among African American women in treatment for co-occurring PTSD and SUD

The relationship between patient-centred care for substance use disorders and patient outcomes: A scoping review

BACKGROUND

Patient-centred care (PCC) is considered crucial for high-quality substance use disorder (SUD) treatment and care, but it is unclear whether PCC is associated with enhanced outcomes. This review aimed to map available evidence of the relationship between PCC and outcomes across the SUD treatment continuum.

METHODS

We conducted a scoping review of the literature on the relationship between PCC for SUD and service outcomes in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR) guidelines. Six electronic databases were searched for peer-reviewed articles published in English between January 1994 and June 2024. After screening 5268 titles and abstracts and 186 full texts in duplicate, data were extracted from 135 articles and narratively synthesized according to six PCC dimensions (therapeutic alliance, shared decision-making, personalised supports, integrated care for co-occurring disorders, trauma-informed and culturally-informed care).

RESULTS

The findings from this review suggest largely positive associations between these PCC components and the outcomes of generalist and specialist SUD services. Few studies (<1 %) assessed more than one PCC dimension. The therapeutic alliance was the most frequently assessed dimension (35.6 %, 48/135 articles), followed by shared decision-making (16.3 %, 22/135 articles), trauma-informed care (14.8 %, 20/135 articles), integrated care (13.3 %, 18/135 articles), and personalised services (13.3 %, 18/135 articles). PCC in generalist services was associated with greater SUD treatment utilization and fewer adverse events. PCC in specialist SUD treatment was largely associated with better SUD outcomes.

CONCLUSIONS

This review highlighted evidence gaps on the relationship between PCC and SUD service outcomes, with literature scant for some PCC dimensions and studies typically examining a single dimension of PCC. More research is needed to understand the relative importance of each PCC dimension for predicting SUD service outcomes, how these dimensions interact to influence outcomes, and to develop and evaluate interventions for enhancing PCC.

State of the Science: Treatment of comorbid posttraumatic stress disorder and substance use disorders

Posttraumatic stress disorder (PTSD) and substance use disorders (SUDs) co-occur at high rates, with research showing that up to nearly 60% of individuals with PTSD also suffer from an alcohol and/or drug use disorder. PTSD/SUD is complex; associated with adverse health, social, and economic outcomes; and can be challenging to treat. Over the past decade, the landscape of treatment research addressing PTSD/SUD has significantly expanded. Ongoing efforts aimed at developing and evaluating novel treatments for PTSD/SUD, encompassing both psychotherapy and pharmacotherapy approaches, are steadily advancing. As such, this State of the Science paper reviews the literature on the latest scientific advances in treating PTSD/SUD. Clinical practice guidelines for the treatment of PTSD/SUD are discussed, along with evidence-based psychotherapies and emerging interventions. Rigorously conducted clinical trials demonstrate that individual, manualized, trauma-focused treatments are the most efficacious psychotherapies to use among individuals with PTSD/SUD. Moreover, patients do not need to be abstinent to initiate or benefit from evidence-based PTSD treatment. To date, no medications have been established for this comorbidity. We highlight ongoing research on novel treatments for PTSD/SUD, such as new forms of integrated trauma-focused psychotherapies, pharmacological augmentation strategies, and technology-based enhancements. Finally, promising future directions for the field are discussed.

Associations among Trauma Exposure, Post-Traumatic Stress Symptoms and Alcohol Use in Black/African American Treatment-Seeking Adults

OBJECTIVE

Black/African American (AA) individuals are a group at risk for co-occurring posttraumatic stress disorder (PTSD) symptoms and alcohol use due to unique cultural and system-level barriers. Although associations between trauma exposure, PTSD symptoms, and alcohol use are well established across various populations, Black/AA individuals are underrepresented in this literature, and related findings in this population are inconclusive. Thus, the goal of this study was to examine the associations among trauma exposure, PTSD symptoms, and alcohol use in a sample of treatment-seeking, Black/AA adults. We hypothesized that trauma exposure and alcohol use would be positively associated and that this relationship would be mediated by PTSD symptoms.

METHODS

This study conducted secondary analysis of screening data from a PTSD and alcohol use disorder clinical trial. Participants were 96 Black/AA adults (57.3% male; 2.0% Hispanic; M age = 44.73, SD = 11.83) who were seeking treatment for alcohol use and endorsed trauma exposure. Associations between trauma exposure, PTSD symptom severity, and quantity and frequency of alcohol use were tested using bivariate correlations and linear regressions. Hypothesized indirect effects were tested using IBM SPSS Statistics Version 27 PROCESS model 4 with bootstrapping.

RESULTS

Findings illustrated a significant positive association between trauma exposure and PTSD symptoms and between PTSD symptoms and drinks per typical drinking day. PTSD symptoms were not significantly associated with number of drinking days. Tests of indirect effects were significant for trauma exposure on drinks per typical drinking day through PTSD symptoms.

CONCLUSIONS

Results from the test of indirect effects suggest that among Black/AA adults with heavy alcohol use and trauma exposure, trauma exposure is associated with PTSD symptoms, which in turn is associated with quantity of alcohol use. These findings are consistent with research conducted with White/mixed groups and align with tenets of the self-medication model of PTSD-AUD comorbidity. These findings support current practices that highlight the importance of screening for and addressing PTSD and alcohol use in individuals exposed to trauma. Findings from this paper provide initial data on understudied relationships in an underserved sample and several suggestions are made to generate future research and improve clinical care for Black/AA adults.

CLINICAL TRIALS REGISTRY NAME

Pharmacogenetic Treatment With Anti-Glutaminergic Agents for Comorbid PTSD & AUD; ClinicalTrials.gov Identifier: NCT02884908.

Patient- and therapist-rated alliance predict improvements in posttraumatic stress disorder symptoms and substance use in integrated treatment

OBJECTIVE

Concurrent Treatment of Posttraumatic Stress Disorder (PTSD) and Substance Use Disorders Using Prolonged Exposure (i.e., COPE) is an efficacious, integrated, psychotherapy that attends to PTSD and substance use disorders simultaneously. No study has examined how therapeutic alliance functions during the provision of COPE and how this compares to non-integrated treatments, such as relapse prevention (RP) for substance use disorders. Understanding the role of alliance in COPE versus RP could inform treatment refinement and ways to enhance treatment outcomes.

METHODS

Participants (N = 55 veterans) were randomized to 12, individual, weekly sessions of COPE or RP in a randomized clinical trial. Piecewise linear mixed effect models examined how mid-treatment (1) patient-rated alliance, (2) therapist-rated alliance, and (3) the convergence between patient- and therapist-rated alliance as measured by a difference score predicted reductions in PTSD symptoms and substance use across treatment and follow-up periods.

RESULTS

Both patient- and therapist-rated alliance predicted reductions in PTSD symptoms in COPE. Higher patient-rated alliance predicted lower percent days using substances in RP. Difference score models showed higher patient-rated alliance relative to therapist-rated alliance scores predicted symptom reductions in COPE whereas higher therapist-rated alliance scores relative to patient-rated alliance scores predicted symptom reductions in RP.

DISCUSSION

Preliminary findings show a unique relationship between the rater of the alliance and treatment modalities. Patient-rated alliance may be important in trauma-focused, integrated treatments whereas therapist-rated alliance may be more important in skills-focused, substance use interventions.