The Role of Personality Functioning on Early Drop out in Outpatient Substance Misuse Treatment.

BACKGROUND: Treatment initiation is a major factor contributing to positive outcomes, but the supporting literature remains limited. It is difficult to draw conclusions regarding predictors of dropout, and there is a need to target clients' major early attrition vulnerabilities. Despite empirically validated models for assessing personality, little is known about its role in the treatment process. Studies that have been conducted in this area have focused mainly on stable personality traits and provide conflicting evidence. Aims: The aim of this study is to examine to what extent service users' personality functioning are potential determinants of early drop out. Methodology: A cross-sectional multi-site design examined the therapy process in a naturalistic setting in 5 outpatient preparation treatment centers with 210 service users. The current study adopts a contemporary dimensional-based framework, similar to the Alternative Model of Personality Disorder of the DSM-V and examines the role of characteristic adaptations (SIPP-118) on early drop out (CEST-Intake). Findings: From the broad spectrum of personality traits, only Depression remained significant predictor of drop out. Higher dysfunctional levels in Social Concordance [OR] = 1.85, Wald =19.87, p =.002, 95% CI [1.1, 1.9] as well as the facets Aggression Regulation, Respect and Purposefulness were also predictors of early drop out, while Treatment Readiness and Desire for Help accounted for a significant amount of variance. Conclusions: These findings extend our knowledge of the predictive role of characteristic adaptations in treatment and suggest it may be important to assess these individual differences early on and to design personalized-informed interventions.

Examining the Relationship of Personality Functioning and Treatment Completion in Substance Misuse Treatment.

BACKGROUND: Treatment retention is a major factor contributing to favourable outcome in the treatment of substance misuse, but the literature remains very limited. Despite evidence of the association of personality with drug use experimentation and relapse, surprisingly little is known about its role in the treatment process. Clients' personality functioning as measured by malleable and context sensitive characteristic adaptations in treatment are of concern. AIMS: This study examines whether, and to what extent, personality functioning contributes to or hinders treatment completion. This paper examined the extent to which service users' characteristic adaptations may be potential determinants of treatment completion. METHODOLOGY: A longitudinal multi-site design was utilised, examining the therapy process in a naturalistic setting in five inpatient treatment units. The study examined whether service users' characteristic adaptations (SIPP-118) predict completion, while controlling psychosocial, motivational and treatment engagement indicators involving n = 340 participants from 5 inpatient centres. Multivariate regression analyses were applied to examine the predictive role of characteristic adaptations on treatment completion. RESULTS: Findings indicated that certain dysfunctional characteristic adaptations emerged as strong predictors of treatment completion. Dysfunctional levels on Self-control and Social concordance were significant predictors of drop out from treatment. Individuals with low capacity to tolerate, use and control one's own emotions and impulses were almost three times more likely to drop-out compared to those without [OR] = 2.73, Wald = 6.09, P = .014, 95% CI [1.2, 6.0]. Individuals with dysfunctional levels on the ability to value someone's identity, withhold aggressive impulses towards others and work together with others were 2.21 more times more likely to complete treatment [OR] = 2.21, Wald = 4.12, P = .042, 95% CI [1.0, 4.7]. The analysis at the facet level provided additional insight. Individuals with higher adaptive levels on Effortful Control were 46% more times likely to complete treatment than the group [OR] = 4.67, Wald = 10.231, P = .001, 95% CI [1.81, 12.04], 47% more likely on Aggression regulation [OR] = 4.76, Wald = 16.68, P < .001, 95% CI [2.1, 10.3], and 26% more likely on Stable self-image [OR] = 2.62, Wald = 6.75, P < .009, 95% CI [0.9, 3.0]. CONCLUSIONS: These findings extend our knowledge of the predictive role of characteristic adaptations in treatment completion and highlight the clinical utility of capturing these individual differences early on. Delineating the role of characteristic adaptations in treatment may provide the basis for enhancing treatment effectiveness through individualized interventions that are scientifically driven and may open new avenues for the scientific enquiry of personality and treatment.

Clinical Utility of Assessing Changes of Personality Functioning During Substance Misuse Treatment.

Dimensional models for classifying personality have received extensive empirical support in the treatment of substance misuse. However, we do not currently understand whether and which dimensions of personality functioning are amenable to change. The aim was to examine whether there are clinically significant changes between pre- and during-treatment and assess whether these differ between those completing or dropping out of treatment. From the 200 participants from the outpatient and 340 from the inpatient treatment, a purposeful selection was utilised of 75 cases that participated in both phases and had complete datasets of the assessment battery. A quantitative multi-site individual follow-up design allowed the examination of the potential effects of treatment in personality functioning as well as the degree of clinical significant change of personality functioning. We use Jacob and Truax's formula of reliable and clinically significant change. Five independent mixed between-within subject analyses of variance were performed. All personality adaptations changed towards higher-functioning levels, except Social Concordance, which remained stable. Compared to those dropping out, completers had significantly more changes towards functional characteristic adaptations and higher clinical improvement. The persistence of maladaptive characteristic adaptations may be an important risk marker for poor treatment outcomes, requiring therapeutic attention.

The role of personality functioning in drug misuse treatment engagement.

BACKGROUND AND AIM: Personality functioning is predictive of drug misuse and relapse, yet little is known about the role of personality in engagement with the treatment process. This study aimed to estimate the extent to which broad- and facet-level characteristic adaptations contribute to or hinder treatment engagement, while controlling for psychosocial indicators. DESIGN: Multi-site cross-sectional survey. SETTING: In-patient treatment units covering 80% of residential treatment entries in Greece. PARTICIPANTS: A total of 338 service users, 287 (84.9%) male, 51 (15.1%) female, average age 33.4 years. MEASUREMENTS: Expressions of personality functioning (characteristic adaptations) were assessed using the Severity Indices of Personality Problems (SIPP-118). Treatment engagement was measured using the Client Evaluation of Self and Treatment, in-patient version (CEST). FINDINGS: Dysfunctional levels of relational capacities predicted counselling rapport [ß = 1.50, 95% confidence interval (CI) = 0.326-2.69, P = 0.013], treatment participation (ß = 2.09, 95% CI = 1.15-3.11, P < 0.001) and treatment satisfaction (ß = 1.65, 95% CI = 0.735-2.57, P < 0.001). Counselling rapport was also predicted by dysfunctional levels in self-control (ß = 1.78, 95% CI = 0.899-2.67, P < 0.001), self-reflective functioning at the facet-level (ß = 2.24, 95% CI = 1.01-3.46, P < 0.001) and aggression regulation (ß = 1.43, 95% CI = 0.438-2.42, P = 0.005). Dysfunctional levels on social concordance (ß = -1.90, 95% CI = -2.87 to -0.941, P = 0.001), emotional regulation (ß = 1.90, 95% CI = 0.87-2.92, P < 0.001) and intimacy (ß = 2.04, 95% CI = 1.31-3.05, P < 0.001) were significant predictors of treatment participation. Treatment readiness and desire for help predicted treatment engagement. CONCLUSIONS: In people attending substance use treatment services, maladaptive interpersonal patterns and relational intimacy, emotional dysregulation and impulse control may be associated with low levels of counselling rapport and treatment participation. Low frustration tolerance and aggressive impulses also appeared to predict low participation.