The treatment of dissociative identity disorder in an eating disorder residential treatment setting.

OBJECTIVE: Child maltreatment, dissociation and dissociative disorders have been noted in relationship to eating disorders (EDs) for decades, and their co-occurrence generally is associated with greater morbidity, self-harm and mortality. The concomitant presentation of dissociative identity disorder (DID) with an ED (ED + DID) is especially challenging, and there is limited information on approaches to and the effects of integrated treatment for this serious comorbidity, especially in higher levels of care. There are also limited treatment resources for such patients, since they are often turned away from specialty units due to lack of expertise with or bias toward one or the other disorder. METHOD: We report our experience with a case series of 18 patients with DSM-5 defined ED + DID (mean age (SD) = 32.6 (11.8) years) admitted to residential treatment (RT) and assessed using validated measures for symptoms of ED, major depression (MD), PTSD, state-trait anxiety, quality of life (QOL), age of ED onset, and family involvement during treatment. All patients received integrated, multimodal, trauma-focused approaches including those based on DID practice guidelines, principles of cognitive processing therapy (CPT), and other evidence-based approaches. Fifteen of 18 patients also completed discharge reassessments, which were compared to admission values using paired t-tests. RESULTS: Following integrated, trauma-focused RT, patients with ED + DID demonstrated statistically significant improvements in all measures, with medium (anxiety) to high (ED, PTSD, MD, QOL) effect sizes. DISCUSSION: These results provide positive proof of concept that patients with ED + DID can be effectively treated in a specialty, trauma-focused ED program at higher levels of care. PUBLIC SIGNIFICANCE: EDs and dissociative identity disorder (DID) are related conditions, but little is known about treating patients with both conditions. We describe the clinical features and integrated treatment of 18 such patients, 15 of whom completed discharge assessments. Significant clinical improvements were found in multiple domains (ED, PTSD, mood, anxiety, quality of life), which demonstrate positive proof of concept that ED + DID can be effectively treated in a specialty, trauma-focused ED program.

Associations between major depressive and bipolar disorders and eating disorder, PTSD, and comorbid symptom severity in eating disorder patients.

OBJECTIVE: Major depressive disorder (MDD) and bipolar disorder (BD) are commonly comorbid with eating disorders (EDs). However, there is limited data about the clinical features of such patients, especially their association with traumatic histories and PTSD, which occur commonly in patients admitted to residential treatment. METHODS: Adults (≥18 years, 91% female, n = 2155) admitted to residential ED treatment were evaluated upon admission for DSM-5 defined MDD and BD. Patients were divided into three groups based on an admission diagnosis of no mood disorder (NMD), MDD, and BD (types I and II) and compared on a number of demographic variables, clinical features and assessments. RESULTS: Mood disorders occurred in 76.4% of participants. There were statistically significant differences across groups in most measures with the BD group showing higher rates and doses of traumatic events; higher current PTSD; higher BMIs; higher severity of ED, depression and state-trait anxiety symptoms; worse quality of life; and higher rates of substance use disorders. Similarly, the MDD group had higher rates than the NMD group on most measures. CONCLUSIONS: These findings have important implications for prevention, treatment and long-term follow-up and highlight the need for early trauma-focused treatment of ED patients with comorbid mood disorders and PTSD.

Psychometric analysis of the Group Climate Inventory-Revised in adults with mild intellectual disability or borderline intellectual functioning in a secure residential facility.

BACKGROUND: In secure residential facilities, group climate perceptions of clients with mild intellectual disability or borderline intellectual functioning are systematically assessed for quality improvement. A valid and reliable measure may ensure that this process is consistent. The Group Climate Inventory-Revised (GCI-R) is a new measure to assess group climate perceptions. METHOD: Confirmatory factor analysis was conducted in 148 adult clients (79% male) with mild intellectual disability or borderline intellectual functioning in a secure facility to examine internal structure validity and internal consistency reliability of the GCI-R. RESULTS: The results indicate support for the five-factor structure of the GCI-R ('Support', 'Growth', 'Repression', 'Peer interactions', and 'Physical environment'). The internal consistency reliability of its scales ranged from acceptable to good (α: .72-.87; ω: .76-.86). CONCLUSION: The GCI-R demonstrates evidence of psychometric adequacy when applied to adult clients with mild intellectual disability or borderline intellectual functioning in secure residential facilities.

Treatment Readiness in Psychiatric Residential Care for Adolescents.

There are many factors to consider when treating adolescents with psychiatric challenges, including whether they are willing and interested in participating in treatment. This study aimed to explore how treatment readiness impacts treatment experience for adolescents in psychiatric residential care who came into treatment with moderate to severe depression. All participants (N = 1,624; Mage = 15.58, SD = 1.46) were admitted to a large, multi-state psychiatric residential system between January 2020 and March 2022. Patients were 95.6% White, 99% non-Hispanic, and 64.7% identified as female. At intake, all patients were administered an assessment which includes the multi-dimensional Behavioral Health Screen (BHS) that assesses psychopathology and risk factors, a working alliance scale, depression, and well-being measures. Patients were also asked how they were admitted to the program, using a single item, multiple choice question as an informal treatment readiness measure, yielding three readiness groups: precontemplation, contemplation, or preparation. Regression analysis results indicated that patients' readiness level was associated with different baseline characteristics (e.g., age, gender, psychopathology symptoms, risk factors) and week 3 outcomes (e.g., decreased symptoms, well-being, alliance, satisfaction). The clinical implications, as well as limitations and future directions, will be discussed.

A Qualitative Study Exploring the Benefits and Challenges of Implementing Client Centred Care (CCC) in an Alcohol and Other Drug Treatment Service.

Objective: Client centered care (CCC) is strongly advocated for improving the quality of health care. The aim of the current study was to explore client and staff perspectives of a new model of CCC implemented in a residential alcohol and other drug (AOD) treatment service. Specifically, the study aimed to (i) describe the defining features of CCC, and (ii) describe the benefits and challenges of implementing CCC at the service. Methods: Participants were 18 clients and eight staff who took part in focus groups and interviews. Thematic analysis of four client focus groups and eight staff individual interviews was conducted. Results: Staff identified the defining features of CCC as flexible, comprehensive, open-minded, and inclusive. Clients and staff shared predominantly positive views on the CCC model. Shared themes included the challenge of balancing flexibility and structure, and delivering comprehensive and individualized care within the limits of staff knowledge, skills, and resources. Conclusions: Results suggest that implementing CCC across an AOD treatment setting has clear benefits to staff and clients, along with challenges that require careful consideration and planning. Future research should evaluate the effectiveness of providing guidelines that address many of the challenges associated with implementing CCC.

Staff and Veteran Perspectives on Residential Treatment Programs' Responses to COVID-19: A Qualitative Study Guided by the WHO's After Action Review Framework.

Healthcare must rapidly and systematically learn from earlier COVID-19 responses to prepare for future crises. This is critical for VA's Mental Health Residential Rehabilitation and Treatment Programs (RRTPs), offering 24/7 care to Veterans for behavioral health and/or homelessness. We adapted the World Health Organization's After Action Review (AAR) to conduct semi-structured small-group discussions with staff from two RRTPs and Veterans who received RRTP care during COVID-19, to examine COVID-19's impact on these programs. Six thematic categories emerged through qualitative analysis (participant-checked and contextualized with additional input from program leadership), representing participants' recommendations including: Keep RRTPs open (especially when alternative programs are inaccessible), convey reasons for COVID-19 precautions and programming changes to Veterans, separate recovery-oriented programming from COVID-19-related information-sharing, ensure Wi-Fi availability for telehealth and communication, provide technology training during orientation, and establish safe procedures for off-site appointments. AAR is easily applicable for organizations to debrief and learn from past experiences.

Scaling a Behavioral Health Home Delivery Model to Special Populations.

The present project utilized a Learning Collaborative (LC) to disseminate the Behavioral Health Home Plus (BHHP) physical-behavioral health integration model to providers serving two behavioral health populations at risk for adverse health conditions: youth psychiatric residential treatment facilities (five sites) and adult opioid treatment providers (seven sites). Following the positive results of a randomized controlled trial utilizing an LC to implement two behavioral health home models in community mental health provider organizations serving adults with serious mental illness, Community Care Behavioral Health Organization facilitated integration of the models to scale health and wellness supports to additional behavioral health care delivery settings. This paper presents provider results focused on BHHP implementation training, LC implementation, physical health and wellness promotion within sites, and BHHP model sustainment plans. Provider self-reported data indicate that the LC approach is a successful tool for integrating and sustaining BHHP model components in routine care.

Quality of the therapeutic working alliance as a factor in intensive residential treatment of obsessive-compulsive disorder.

OBJECTIVE: Intensive residential treatment (IRT) for obsessive-compulsive disorder (OCD) includes frequent meetings with a cognitive-behavioral therapist. We examined whether this therapeutic working alliance relates to IRT outcomes. METHOD: Data came from a naturalistic sample of patients with OCD (n = 124) who received IRT at a specialty OCD clinic. Patients completed measures of OCD severity and well-being at admission and discharge. Both the patient and treating psychologist completed the Working Alliance Inventory-Short Form (WAI-SF). Alliance ratings were tested as predictors in models predicting outcomes (discharge scores adjusting for baseline and treatment duration) as well as logistic regression predicting treatment response (≥35% symptom reduction in OCD symptoms). RESULTS: Patient and clinician ratings of the quality of the alliance were weakly yet significantly correlated. Patient ratings of the alliance predicted outcomes, while therapist ratings did not. Moreover, greater discrepancy between patient and client ratings predicted worse outcomes. Patient ratings of the task dimension of the alliance uniquely related to responder status. CONCLUSIONS: Patient perceptions of the working alliance, particularly as pertaining to agreement on therapeutic tasks, related to success with IRT for OCD. Further study is needed test interventions to improve task alliance as a strategy to enhance treatment.

Addressing experiences of trauma within Indigenous-focused substance use residential treatment: a systematic review and environmental scan.

Indigenous individuals in Canada disproportionally experience higher rates of substance use concerns. This study examined clinical practices currently implemented with Indigenous-led residential treatment facilities to simultaneously address substance use and post-traumatic stress. A systematic review of relevant literature retrieved published approaches to address these concurrent disorders with Indigenous individuals. This review retrieved 35 sources related to trauma and substance use treatment among Indigenous individuals or communities. Among these sources, all leveraged cultural approaches as a dual treatment for trauma symptoms and substance use. Inconsistent results were reported among those sources (n = 3) who analyzed comparisons with wait-list controls or used randomized-controlled designs. Using culture-as-treatment was elaborated upon in the second goal of this study: an environmental scan of Indigenous-led treatment programs and qualitative interviews with 10 treatment center staff to understand how programs may address both substance use and traumatic symptoms among Indigenous-led substance use treatment centers across Canada. When we searched the websites of these centers, we found that approximately 38% (16 of 43) of treatment centers discussed implementing some form of treatment that addressed trauma symptoms in conjunction with primary substance use. Among the 10 staff participants, all discussed how trauma can impede client success in treatment, and ACE-specific programming is useful within their respective treatment programs. Results showed that when manualized treatments are used, they must be adapted to meet the specific needs of Indigenous communities, and culture-as-treatment is a popular approach among Indigenous-led treatment centers, particularly for addressing trauma symptoms.

Tai Chi as a Complementary Therapy for Depression and Anxiety Among U.S. Veterans in a Mental Health Inpatient Setting.

BACKGROUND: Depression and anxiety are two of the top five mental illnesses veterans report. Treatment for depression and anxiety includes medications and psychiatric treatment in inpatient, outpatient, and residential treatment programs; the use of complementary and alternative medicine (CAM) can have beneficial results by decreasing symptoms, recognize patients' preference for CAM, and be cost-effective. AIM: This study aimed to evaluate the effects of Tai Chi on depression and anxiety symptoms on inpatient psychosocial or substance use disorder (SUD) rehabilitation treatment program residents since little evidence exists regarding the effectiveness of Tai Chi on participants in residential mental health treatment programs. METHOD: A mixed-method, cohort design with 88 participants (41 usual treatment without Tai Chi, 47 intervention) used a demographic survey, Hamilton Anxiety Scale, Quick Inventory of Depressive Symptomatology, self-report, and the Patient Health Questionnaire-9 at Weeks 1 and 4 of the treatment program. After Week 4, the intervention group responded to six open-ended questions about Tai Chi's effects on their overall depression and anxiety. RESULTS: The anxiety level of the intervention group was significantly decreased, as evidenced by the Hamilton Anxiety Scale scores (p = .02). However, the measures of depression did not differ between the groups. Two themes, mindfulness and satisfaction, were identified from the written responses regarding the Tai Chi intervention. CONCLUSION: Tai Chi effectively reduced symptoms of anxiety that varied by age and ethnicity. This study increased the insight regarding the benefit of including Tai Chi as a complementary therapy for those participating in residential treatment programs.

Integration of Twelve Step with Evidence-Based Practices in a Residential Treatment Center.

Background: Residential treatment for substance use disorders (SUDs) typically involves both medical and psychological treatments to best meet the needs of service users. Common treatments include Twelve Step Facilitation (TSF) as well as evidence-based practices (EBPs) such as cognitive behavioral therapies and medications. Researchers have discussed the difficulties with implementation and sustainability of EBPs within treatment centers that predominantly use TSF. Objectives: Understanding the process of implementation is an important area of study to inform future implementation efforts. The present study involved a qualitative investigation of a residential treatment center that integrated EBPs alongside TSF. Treatment stakeholders (N=22) were interviewed about their experience with integration. Results: The results indicated that the organization's evolution to integrate evidence-based practices (e.g., medication, evidenced-based psychotherapy) occurred through a process of themes including staff members' personal allegiance to Twelve Step; tension among staff members; staff collaboration; and integration of theoretical orientations. The results parallel those found in the Normalization Process Theory of implementation. Conclusions: The present study provides an understanding as to how Twelve Step and EBPs can be integrated into a residential treatment center, allowing for service users to have choice in their care. The program's ability to navigate the treatment evolution can be used as an example for integrating evidence-based practice with Twelve Step to meet the many needs of individuals seeking substance use treatment.

Applying after action review to examine residential treatment programs' responses to COVID-19.

Resurgences of COVID-19 cases are a grave public health concern. Hence, there is an urgent need for health care systems to rapidly and systematically learn from their responses to earlier waves of COVID-19. To meet this need, this article delineates how we adapted the World Health Organization's After Action Review (AAR) framework to use within our health care system of the United States Department of Veterans Affairs. An AAR is a structured, methodical evaluation of actions taken in response to an event (e.g., recent waves of COVID-19). It delivers an actionable report regarding (i) what was expected, (ii) what actually happened, (iii) what went well, and (iv) what could have been done differently, and thus what changes are needed for future situations. We share as an example our examination of Mental Health Residential Rehabilitation and Treatment Programs in Massachusetts (a COVID-19 hotspot). Our work can be further adapted, beyond residential treatment, as a consistent framework for reviewing COVID-19 responses across multiple health care programs. This will identify both standardized and tailored preparations that the programs can make for future waves of the pandemic. Given the expected resurgences of COVID-19 cases, the time to apply AAR is now.

Substance Use Disorder and Anxiety, Depression, Eating Disorder, PTSD, and Phobia Comorbidities Among Individuals Attending Residential Substance Use Treatment Settings.

Objective: Mental health comorbidities among individuals with a substance use disorder are common. This study provides an analysis of the prevalence, risk factors, and treatment outcomes (depression, anxiety and stress, and cravings) of individuals with comorbid depression, anxiety, posttraumatic stress disorder (PTSD), obsessive compulsive disorders (OCD), and/or eating disorders attending residential substance use treatment centers. Methods: Intake and three-month post-discharge assessments of 603 (69.3% men) people attending residential substance use treatment services were conducted using the Mental Health Screening Scale, Addiction Severity Index, Depression, Anxiety Stress Scale, and a cravings measure. Results: Anxiety disorders were common (94.5%), followed by depression (89.6%), PTSD (62.0%), OCD (33.7%), and eating disorders (21.4%). Nearly a quarter reported two comorbidities and 8.5% reported five comorbidities. Higher comorbidity levels were associated with having poorer mental health but not cravings at three-month post-discharge follow-up. Conclusions: Comorbidity is common and complex in presentations to residential substance use treatment settings. Higher levels of comorbidity are linked to poorer mental health, which remains over time.

The Association Between Service Connection and Treatment Outcome in Veterans Undergoing Residential PTSD Treatment.

The Department of Veterans Affairs has invested significant time and resources into the treatment of posttraumatic stress disorder (PTSD). Despite concerted efforts, a significant portion of patients do not respond optimally to trauma-focused treatment. One of the factors that has been hypothesized to be associated with treatment response is participation in the Veterans Benefits Administration service-connected disability process. This factor may be particularly relevant in the residential treatment setting, where most participants are engaged in the compensation seeking process. We conducted a retrospective chart review of 105 veterans who completed Cognitive Processing Therapy (CPT) in a residential rehabilitation program. ANCOVAs that adjusted for baseline PTSD severity compared symptom change between those who were and were non-compensation seeking at the time of treatment. Compensation seeking status was associated with significantly less symptom improvement over the course of CPT after adjusting for baseline PTSD severity (F(1, 102) = 4.29, p < .001, η2 = .03). Sensitivity analyses did not detect a similar effect during a prior coping skills phase of treatment. During CPT, clinically significant change was met by 66.7% of non-compensation seeking veterans (M = -15, SD = 14.56) and by 40.1% of the compensation seeking group (M = -7.1, SD = 12.24). Compensation-seeking may be associated with reduced response to trauma-focused treatment in certain settings. Future research is needed to better understand the mechanisms underlying this effect.

Implementation of the Wolverine Mental Health Program, Part 2: Implementation Phase.

To enhance mental health care for youth in a midwestern residential treatment facility, Wolverine Human Services partnered with the Beck Institute (an intermediary) and an implementation research team to implement cognitive-behavioral therapy (CBT). CBT has strong evidence supporting effectiveness for treating youth internalizing and externalizing problems, but it is a complex psychosocial intervention that demands a thoughtful implementation approach. This study outlines the implementation phase (2.5 years) of a 5-year collaborative effort. The implementation phase focused on (a) adapting CBT to fit the complex youth needs and the roles of the multidisciplinary team members resulting in a new comprehensive and coordinated care model, and (b) the strategies utilized to support its competent integration by all team members. Six blended implementation strategies were deployed in this phase: forging implementation teams, installing progress monitoring, adapting CBT, training, providing supervision and consultation, and training the trainers. A components-based approach to CBT yielded six core skills: active listening, problem solving, mood monitoring and intervention mapping, activity scheduling, distress tolerance, and cognitive restructuring. By the end of this phase, all staff had robust exposure to and experience with the adapted form of CBT. The work of our academic-community partnership has both research and clinical implications, with respect to integrating an adapted version of CBT for residential environments (CBT-RE).

Implementation of the Wolverine Mental Health Program, Part 1: Adoption Phase.

Residential treatment facilities (RTFs) are a first-line treatment option for juvenile justice-involved youth. However, RTFs rarely offer evidence-based interventions for youth with internalizing or externalizing mental health problems. Wolverine Human Services (WHS) is one of the first RTFs in the nation to implement cognitive-behavioral therapy (CBT) to enhance mental health care for their youth. This study outlines the preimplementation phase of a 5-year collaborative CBT implementation effort among WHS, the Beck Institute, and an implementation science research team. The preimplementation phase included a needs assessment across two sites of WHS to identify and prioritize barriers to CBT implementation. Of the 76 unique barriers, 23 were prioritized as important and feasible to address. Implementation teams, consisting of clinician and staff champions and opinion leaders, worked across 8 months to deploy 10 strategies from a collaboratively designed blueprint. Upon reevaluation of the needs assessment domains, all prioritized barriers to CBT implementation were removed and WHS's readiness for CBT implementation was enhanced. This study serves as a model of a preimplementation process that can be employed to enhance the potential for successful evidence-based practice implementation in youth RTFs.

Implementation of the Wolverine Mental Health Program, Part 3: Sustainment Phase.

Sustaining the implementation of an evidence-based practice (EBP) is the ultimate goal of often years of significant personnel and financial investment. Some conceptualize sustainment as a distinct phase following an active implementation period where the contextual factors, processes, and supports are bolstered to ensure continued EBP delivery. This study provides an overview of the sustainment strategies deployed to embed cognitive-behavioral therapy (CBT) in a Midwestern residential treatment facility serving youth with complex mental health needs. Seven key strategies and their outcomes are described: use of CBT teams, new hire orientation plans, monthly campaigns, change in job descriptions and performance evaluations, development of a behavioral reinforcement system for youth, and a pathway to CBT certification. This study provides a window into how one might sustain an EBP by addressing barriers unique to this phase of work.

Sexual and gender minority individuals report higher rates of lifetime traumas and current PTSD than cisgender heterosexual individuals admitted to residential eating disorder treatment.

OBJECTIVE: Trauma and posttraumatic stress disorder (PTSD) are associated with eating disorders (EDs), which occur across all sexual orientations and gender identities. Prior traumas and PTSD also are reported to occur significantly more frequently in individuals identifying as lesbian, gay, bisexual, transgender, queer or questioning, non-binary, or other (LGBTQ+), but little is known about rates of PTSD in LGBTQ+ individuals with EDs admitted to residential treatment (RT). METHOD: Our sample included 542 adults with DSM-5 EDs admitted to RT at seven sites in the U.S. Rates of current presumptive PTSD (PTSD +) by LGBTQ + status were determined by responses on the Life Events Checklist (LEC-5) and the PTSD Symptom Checklist for DSM-5 (PCL-5). RESULTS: Nearly 24% of admitting individuals self-reported as LGBTQ+, and these individuals had significantly higher LEC-5 total scores (5.6 v. 4.9), PCL-5 total scores (41.9 v. 34.0), and rates of PTSD+ (63% v. 45%) than non-LGBTQ+ individuals. The LGBTQ+ with PTSD+ group reported (1) significantly more unwanted sexual experiences, sexual assaults, physical assaults, and severe human suffering experiences, and (2) significantly greater ED, depressive and trait-anxiety symptoms than the non-LGBTQ+ group with PTSD+. CONCLUSIONS: LGBTQ+ individuals had significantly higher rates of high impact lifetime traumas and presumptive PTSD+, as well as greater ED and comorbid symptom severity, than non-LGBTQ+ individuals. Development, implementation and assessment of integrated treatment protocols for LGBTQ+ individuals with an ED and PTSD+ is warranted to address the needs of this underserved and often overlooked population. LEVEL OF EVIDENCE: Level III: Evidence obtained from cohort or case-control analytic studies.

Variation in Evidence-Based Practices Among Youth-Serving Residential Treatment Facilities.

BACKGROUND: Residential treatment is among the most intensive and expensive settings for children with behavioral health challenges; yet, the extent to which evidence-based practices are used in these settings is unknown. AIM: The purpose of this study was to describe the extent which family therapy, case management, telehealth, peer support, and family psychoeducation are provided in residential treatment using data from the National Mental Health Services Survey (N-MHSS). Organizational factors-region, ownership, payment, licensing/accreditation, and facility size-were examined in relation to evidence-based practices to understand disparities in care. METHODS: This was a secondary analysis of publicly available data from the 2018 N-MHSS. A subpopulation was created consisting of residential facilities that served children (N = 576). Descriptive statistics were used to describe the sample, and Cohen's h was calculated to determine patterns of evidence-based practice utilization. RESULTS: Evidence-based practices from most to least prevalent were family therapy (76%), family psychoeducation (74%), case management (71.1%), telehealth (17.2%), and peer support (8.7%). The provision of evidence-based practices was not evenly distributed. There were primarily small to moderate differences by organizational factors, including region (i.e., Northeast, Midwest), ownership status (i.e., for-profit), payment type (i.e., self-pay, private insurance), licensing/accreditation (Department of Family and Children Services), and facility capacity (>251 clients served per year). CONCLUSION: Findings demonstrate a need for research-practice partnerships to determine the barriers that prevent effective evidence-based practices from being implemented in the residential treatment setting.

Now and then: a ten-year comparison of young people in residential substance use disorder treatment receiving group dialectical behaviour therapy.

BACKGROUND: Reducing substance use in youth is a global health priority. We compared two cohorts from the same 12-week residential substance use disorder (SUD) facility over a 10 year period: Cohort A (2008-2009) and Cohort B (2018-2020). The essential components of the program remained the same with the primary treatment being dialectical behaviour therapy (DBT) plus residential milieu. METHODS: Young people in the current Cohort B (N = 100) versus historical Cohort A (N = 102) had a similar ratio of males (74 vs. 70%) but were slightly older (mean 20.6 vs. 19.5 years). Linear mixed models were used to model outcome measures (global psychiatric symptoms, substance use severity, and quality of life) longitudinally up to 12 months later. RESULTS: Baseline to end-of-treatment comparisons showed that the current Cohort B had overall higher levels of global psychiatric symptoms (d = 0.70), but both groups reduced psychiatric symptoms (Cohort A: d = 1.05; Cohort B: d = 0.61), and had comparable increases in confidence to resist substance use (d = 0.95). Longitudinal data from the current Cohort B showed significant decreases in substance use severity from baseline to 6-month follow-up (d = 1.83), which were sustained at 12-month follow-up (d = 0.94), and increases in quality of life from baseline to end-of-treatment (d = 0.83). CONCLUSIONS: We demonstrate how DBT plus milieu residential care for young people continues to show positive effects in a 10-year comparison. However, youth seeking treatment today compared to 10 years ago evidenced higher acuity of psychiatric symptoms reinforcing the importance of continuous improvement of psychological treatments. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry: trial ID ACTRN12618000866202 , retrospectively registered on 22/05/2018, .