Psychopathology, treatment completion and 5 years outcome. A prospective study of drug abusers

Changes in opiate and stimulant use through 10 years: The role of contextual factors, mental health disorders and psychosocial factors in a prospective SUD treatment cohort study

AIM

To examine temporal changes in opiate and stimulant use among patients in substance abuse treatment over a ten-year observation period and to explore the role of contextual factors, mental health disorders and psychosocial factors on these changes.

METHODS

A cohort of 481 patients was prospectively interviewed at admission to treatment and after 1, 2, 7 and 10 years. The sample was recruited from 20 facilities in the Greater Oslo region, Norway.

RESULTS

The majority of patients were poly-drug users and 80% had used both opiates and stimulants the last 30 days prior to treatment admission. Last-month use of heroin, other opiates, cocaine and amphetamines declined from 80% to 34% at the end of the observation period. The most substantial reduction was observed between baseline and one-year follow-up. Use of heroin decreased the most from 62% to 16% after 10 years (a reduction of 74%), and the reduction continued from one-year follow-up throughout the observation period. The most important multivariate risk factors for sustained use of these drugs were male gender, having one or both biological parents with severe alcohol or drug problems, having an antisocial personality disorder, and living together with a person who abuses alcohol or drugs. Employment was associated with reduced risk of drug use at 7-year follow-up.

CONCLUSIONS

There was a substantial reduction in opiate and stimulant use from baseline to all follow-up assessments, most greatly for heroin. Findings regarding sustained use could suggest familial transmission and the challenges of preventive strategies and treatment efforts in an intergenerational context. Co-occurrence between drug abuse and mental health problems highlights the need of highly specialized competence in SUD treatment.

Measuring outcomes for TC clients: Higher Ground Drug Rehabilitation Trust

Purpose

The purpose of this paper is to analyse the clinical outcome data collected as part of an 18-week, abstinence-based residential therapeutic community (TC) programme, Higher Ground Drug Rehabilitation Trust (Higher Ground) in New Zealand. Lessons and implications for routine collection of clinical outcome data are identified.

Design/methodology/approach

Higher Ground collects longitudinal data on all consenting clients using a battery of validated psychometric tools, with repeated measures at up to nine points in time from first presentation through to 12-month post-discharge follow up. Data analysis covered clients who entered Higher Ground between 1 July 2012 and 2 June 2015 (n=524).

Findings

Clients presented with histories of addiction which often had significant negative associations with their physical and psychological health, their relationships, work, accommodation and criminal behaviour. By the time they exited the programme, clinically and statistically significant improvements were seen across multiple indicators including: substance use and abstinence; symptoms of post-traumatic stress disorder, depression, anxiety and stress; and a range of social indicators.

Research limitations/implications

Attrition in follow-up research is a significant challenge, with people completing the TC programme being more likely to participate than those who do not. This limits generalizability in post-discharge data. There was no control group, making causal attribution a challenge. Identifying suitable benchmarks from the literature is challenging because of the variety of outcome measures and research methodologies used.

Practical implications

Tracking client outcomes longitudinally using psychometric tools is potentially valuable for TCs and their funding bodies, as it provides insights into patterns of client recovery that can inform ongoing service improvements and resource allocation decisions. However, significant challenges remain.

Originality/value

The study demonstrates the value, and practical challenges, of collecting high-quality outcome data in a TC setting.

Program Retention and Perceived Coercion in Three Models of Mandatory Drug Treatment

Despite the proliferation of drug courts and other mandatory treatment models, few studies have compared the impact of different program features comprising these models. This study compared three groups of clients (N = 330) mandated to the same long-term residential treatment facilities. Study participants were referred from two highly structured programs or from more conventional legal sources, such as probation or parole agents. Analyses showed that these clients varied substantially in their perceptions of legal pressure, and these perceptions generally corresponded to the programs' different coercive policies and practices. Retention analyses confirmed that the odds of staying in treatment for six months or more was nearly three times greater for clients in the most coercive program compared to clients in the third group. Results support the use of structured protocols for informing clients about legal contingencies of participation and how that participation will be monitored, and developing the capacity to enforce threatened consequences for failure.

Experimental evaluation of a vocationally integrated therapeutic community

Purpose

– Retrospective studies of therapeutic community (TC) treatment for drug abuse found reductions in drug use, criminality, and increased work participation after treatment completion. These studies have also shown treatment benefits, even without completion, are correlated with days of stay in residential treatment. However, others have found that high rates of early leaving from TC treatment reduce the proportion of clients with positive outcomes, raise the total cost per treated client, and lower the treatment benefit-to-costs ratio. The purpose of this paper is to describe an experimental approach to raising the days in residential treatment using earlier vocational access for clients.

Design/methodology/approach

– The current study used a random assignment design to compare earlier integration of on-site vocational training in a vocationally integrated therapeutic community to off-site vocational training initiated after one year of residence in a traditional therapeutic community.

Findings

– The resulting data support the hypotheses that client expectations and early training in job skills increase rate of treatment affiliation, the proportion of clients having effective lengths of stay, and the rate of treatment completion.

Research limitations/implications

– Research limitations/implications include the difficulty of assuring unbiased selection and controlling treatment assignment and conditions.

Practical implications

– Practical implications of this research project are to support practitioners striving for longer, more effective lengths of stay, while at the same time attempting to reduce treatment time and increase effectiveness.

Social implications

– Social Implications of this project are to encourage social support for addiction treatment and emphasize the value of paired residential treatment and vocational education.

Originality/value

– The originality and value of this research project lies in the adoption of a working model at Phoenix House TC (in-house vocational preparation), which utilizes early in-house vocational education as a means to increase residential program participation, increase employment skills and prospects, and decrease overall length of treatment.

The impact of borderline personality disorder on residential substance abuse treatment dropout among men

BACKGROUND

Research is increasingly focusing on identifying factors distinguishing patients who complete vs. dropout of residential substance abuse treatment. One potentially relevant factor that has received relatively little attention is borderline personality disorder (BPD).

METHODS

This study sought to examine the effect of BPD on residential substance abuse treatment dropout within a sample of 159 male patients with substance use disorders-a population often understudied with regard to BPD and at high-risk for treatment dropout. Patients were administered a structured diagnostic interview to establish BPD diagnoses. Patients were then followed throughout the course of residential substance abuse treatment to identify those who completed treatment and those who prematurely dropped out of treatment.

RESULTS

Patients with BPD were significantly more likely to prematurely dropout of treatment, and this finding remained even when taking into account relevant covariates (i.e., court-ordered treatment status, contract duration, and major depressive disorder). Further, patients with BPD were more likely to experience center-initiated dropout as opposed to voluntary withdrawal from treatment.

CONCLUSIONS

These findings add to the literature on BPD-SUD co-occurrence, suggesting that the presence of co-occurring BPD among male SUD patients may increase the risk for dropout from residential substance abuse treatment, necessitating targeted interventions focused on decreasing dropout within this patient subgroup.

A 25-year follow-up of patients admitted to methadone treatment for the first time: mortality and gender differences

INTRODUCTION

We conducted a follow-up study to evaluate the outcome of a heroin-dependent population 25 years after their first enrollment in methadone maintenance treatment (MMT). We assessed mortality in the sample plus actual drug use, treatment, and medical factors associated with drug dependence, focusing on possible gender differences.

METHODS

Prospective follow-up study of 214 heroin-dependent patients consecutively admitted for MMT between 1980 and 1984 in the Asturias Public Health Service. The standardized mortality ratio (SMR) and 95% confidence interval (CI) were calculated. An ad-hoc protocol on drug misuse and treatment, drug-related morbidity and Clinical Global Impression (CGI) scores were assessed in the survivors' sample.

RESULTS

Information was received on 159 subjects, 106 of whom were deceased. Men accounted for 76.2% of the study cohort. Over the 25-year follow-up period, the SMR was 22.51 (95% CI=22.37-22.64). In the survivors sample, 39.6% were still enrolled in MMT; human immunodeficiency virus (HIV) was diagnosed in 47.2% and hepatitis B/C in 81.1%; current heroin use was reported by 22.6%. There were no gender differences in mortality or HIV and hepatitis B/C status. None of the female survivors were using heroin at the 25-year follow-up compared with 31.1% of males.

CONCLUSIONS

This study confirms the high mortality of heroin addicts even after enrollment in MMT. Severity of the addiction in terms of mortality was similar in both genders. Women who survived the 25-year follow-up were more likely to have stopped using heroin than men.

The use of screening instruments for detecting alcohol and other drug use disorders in first-episode psychosis

The high rate of drug abuse among patients with psychosis represents a challenge to clinicians in their treatment of the patients. Powerful screening tools to detect problematic drug use in an early phase of psychotic illness are needed. The aim of the present study was to investigate prevalence of drug use disorders and psychometric properties of the Alcohol Use Disorder Identification Test (AUDIT) and the Drug Use Disorder Identification Test (DUDIT) in 205 first-episode psychosis patients in Oslo, Norway. Internal consistency of the instruments and criterion-based validity as compared to a current DSM-IV diagnosis of abuse or dependence of alcohol or other drugs were analyzed. Fifteen percent of the men and 11% of the women had a DSM-IV diagnosis of alcohol use disorders while 33% of the men and 16% of the women had non-alcohol drug use disorders. The instruments were reliable (Cronbach's alpha above 0.90) and valid (Area under the curve above 0.83). Suitable cut-off scores (sensitivity >0.80 and specificity >0.70) were ten for men and eight for women on AUDIT and three for men and one for women on DUDIT. The results of this study suggest that AUDIT and DUDIT are powerful screening instruments for detecting alcohol and other drug use disorders in patients with first-episode psychosis.

Substance use disorders among personality disordered patients admitted for day hospital treatment. Implications for service developments

Personality disorders (PD) and substance use disorders (SUD) are highly comorbid conditions. However, their treatment services are often separated. The aims of this study was to investigate how extensive this separation was prior to a Norwegian health reform (2004) that promoted integration, and to discuss clinical challenges for an integrated treatment of PD and SUD. All patients with a diagnosis of PD (n=1783) admitted to 10 day hospital treatment programs (1993-2003) were examined. Diagnoses were assessed by Mini International Neuropsychiatric Interview and Structured Clinical Interview for DSM-IV interviews. Socio-demographic data, psychosocial functioning (Global Assessment of Functioning Scale), symptom distress (Symptom Check List-90-Revised), interpersonal problems (Circumplex of Interpersonal Problems) and treatment course were recorded. The majority of patients were females (72%) and the prevalence of SUD was low (14%). SUD occurred among all PD categories. Patients with borderline PD were over-represented and patients with cluster C disorders were under-represented in the SUD sample. The SUD sample contained more men and it was associated with more previous violence against self and others. The reported violence was partly explained by gender (males) and diagnoses (borderline and SUD). PD patients with SUD also displayed more aggression during treatment and dropped out more frequently. The findings demonstrate that the female dominated specialized psychiatric treatment services for PD to a large extent had excluded PD patients who also had SUD. The reasons are probably related to the surplus problems that characterized the SUD sample and gender issues. Implications for the development of the PD and SUD services with respect to an integrated treatment for these comorbid conditions are discussed.

Anxiety sensitivity: a unique predictor of dropout among inner-city heroin and crack/cocaine users in residential substance use treatment

The present study examined the extent to which anxiety sensitivity (AS) at treatment entry was related to prospective treatment dropout among 182 crack/cocaine and/or heroin-dependent patients in a substance use residential treatment facility in Northeast Washington, DC. Results indicated that AS incrementally and prospectively predicted treatment dropout after controlling for the variance accounted for by demographics and other drug use variables, legal obligation to treatment (i.e., court-ordered vs. self-referred), alcohol use frequency, and depressive symptoms. Findings are discussed in relation to the role of AS in treatment dropout and substance use problems more generally.

Impact of comorbid psychiatric disorders on the outcome of substance abusers: a six year prospective follow-up in two Norwegian counties

BACKGROUND

Most help-seeking substance abusers have comorbid psychiatric disorders. The importance of such disorders for the long-term course of substance abuse is, however, still unclear. The aim of this paper is to describe six-year outcomes regarding death and relapse among alcoholics and poly-substance abusers and to analyse the predictive value of lifetime psychiatric disorders on relapse.

METHODS

A consecutive sample of substance-dependent patients who received treatment in two counties in Norway (n = 287) was followed up after approximately six years. Information on socio-demographics, Axis I (CIDI) and II disorders (MCMI-II) and mental distress (HSCL-25) was gathered at baseline. At follow-up, detailed information regarding socio-demographics, use of substances (AUDIT and DUDIT) and mental distress (HSCL-25) was recorded (response rate: 63%).

RESULTS

At six-year follow-up, 11% had died, most often male alcoholics (18%). Among the surviving patients, 70% had drug or alcohol related problems the year prior to follow-up. These patients were, classified as "relapsers". There were no significant differences in the relapse rate between women and men and among poly-substance abusers and alcoholics. The relapsers had an earlier onset of a substance use disorder, and more frequently major depression and agoraphobia. Multivariate analysis indicated that both psychiatric disorders (major depression) and substance use factors (early onset of a substance use disorder) were independent predictors of relapse.

CONCLUSION

For reducing the risk of long-term relapse, assessment and treatment of major depression (and agoraphobia) are important. In addition, we are in need of a comprehensive treatment and rehabilitation program that also focuses on the addictive behaviour.

Follow-up studies of treatment for hepatitis C virus infection among injection drug users

Physicians are reluctant to treat chronic hepatitis C virus (HCV) infection in active injection drug users (IDUs). An important reason for this is concern about reinfection after successful treatment. However, little is known about this apparent risk; because of lack of protective immunity, reinfection with HCV seems possible. Here, I discuss several cases of probable reinfection in IDUs, 2 of which occurred during or after successful treatment for HCV infection. In a Norwegian trial, 69 IDUs who had abstained from drug use for >or=6 months were treated for HCV infection; of these, 27 tested negative for HCV RNA at 6 months of follow-up (sustained virological response). At 5 years of follow-up, 9 (33%) of the 27 IDUs with sustained virological response had returned to drug use, but only 1 case of reinfection was observed. In another study, 395 subjects with sustained virological response were followed with yearly testing for HCV RNA. Although injection drug use was the route of HCV transmission in 40% of the subjects, only 7 (2%) experienced a late relapse of HCV infection. It has not been determined whether any of these cases were actual reinfections. Available data suggest that the rate of long-term response to treatment for HCV infection is excellent in IDUs.

Psychiatric severity and mortality in substance abusers: a 15-year follow-up of drug users

Previous research has shown that most transitions into abstinence happens in the stages of the drug career quickly after the first treatment episode. Mortality is somewhat reduced for patients who become abstinent, but remains high for patients who remain addicted. However, even among substance abusers who become abstinent, mortality is often higher than in the general population. A consecutive sample of drug users admitted for detoxification was followed for 15 years. Face-to-face interviews were conducted at 5-year follow-up. At 15-year follow-up, 24% were dead. Cox proportional hazard regression was conducted to predict mortality for continuous variables, and Gehan's Wilcoxon test was used to predict mortality for dichotomous variables. Psychiatric status at 5-year follow-up was predictive of 15-year mortality, whereas abstinence was not. Subjects who later died had higher scores on the Symptom Checklist 90 [SCL-90] Global Severity Index, lower meaningfulness on the Sense of Coherence scale, and lower Global Assessment of Functioning [GAF] scores at 5-year follow-up. By contrast, there were no associations between baseline drug use and antisocial personality disorder diagnoses and mortality. Psychiatric treatment, including psychotherapy, may be more life-saving for substance abusers than drug-abuse services.

Problem severity profiles of clients in European therapeutic communities: gender differences in various areas of functioning

The BIOMED II 'Improving Psychiatric Treatment in Residential Programmes for Emerging Dependency Groups' project provided a relatively large sample (n = 863) of men (77%) and women (23%) in therapeutic community treatment in nine European countries. This paper's aim is to search for gender differences in profiles of therapeutic community clients on the basis of the different areas of functioning of the EuropASI. A binary logistic regression model was used to avoid the confounding effects of country and age. Our findings confirm what is found in the American literature: compared to men, women have a much worse profile in various areas of functioning when entering treatment. In response, they may require a gender-adapted set of therapeutic interventions at the moment they enter treatment.

Psychological distress tolerance and duration of most recent abstinence attempt among residential treatment-seeking substance abusers

This study investigated the relationship between duration of most recent drug and alcohol abstinence attempt and psychological distress tolerance, as indexed by persistence on a mental arithmetic task (the Paced Auditory Serial Addition Task; D. M. A. Gronwall, 1977), in 89 individuals in an inner-city residential substance abuse treatment facility. Results indicated that most recent abstinence duration was related to persistence on the psychological stressor, beyond the influence of demographics, substance use level, and negative affect. These findings extend previous work (T. H. Brandon et al., 2003; R. A. Brown, C. W. Lejuez, C. W. Kahler, & D. Strong, 2002) reporting significant relationships between persistence on laboratory challenge procedures and duration of abstinence following a quit attempt in smokers, suggesting that common processes account for relapse across addictions. Systematic replications including a prospective design are recommended.

Predictors of 5-year mortality following inpatient/residential group treatment for substance use disorders

This study examined the prevalence and predictors of 5-year mortality following treatment for substance use disorders. The predictors were assessed at baseline, at discharge, and at a 1-year follow-up for 3698 male veterans, and included demographic, substance use, medical, and psychological functioning, social support, and continuing care. The annual mortality rate was 2.38%, with an observed/expected ratio of 3.05. After accounting for significant demographic, substance use, psychological, and medical conditions, not having a spouse or partner at intake independently predicted 5-year mortality. After accounting for intake variables, more depression at discharge and more medical conditions, a diagnosis of HIV or AIDS, more ounces of ethanol on a maximum drinking day, and lack of a spouse or partner at the 1-year follow-up independently predicted 5-year mortality. Unexpectedly, good quality relationships were related to a higher mortality risk. Results can be used to increase at-risk patients' motivation for recovery.

A description of former substance abusers based on a follow-up study

Aim

This paper focuses on one part of a sample from a large follow-up study on substance abusers in residential treatment. The aim of the paper is to describe the abstinent group prior to and in the first two years following residential treatment in Denmark.

Method

The present paper is based on data collected in a follow-up study on substance abusers in residential treatment. The data were collected in the initial phase of treatment and twice in follow up interviews, respectively half a year and two years after termination of treatment, primarily through the use of a Danish version of EuropASI.

Results and Conclusion

The study shows that few differences are found in the comparison of data prior to treatment, and that major differences appear in the years following treatment. In comparison to the non-abstinent groups the abstinent group has to a greater extent established itself in the labour market or in the educational system, and managed to establish and maintain a network of drug free friends and family, including contact with self-help organizations as the NA. The problem severity as measured with the EuropASI is found to have some shortcomings when it comes to evaluating and describing subjects with a very low degree of problem severity.

Stability and change in dimensional ratings of personality disorders in drug abuse patients during treatment

The objective of the study was to determine the extent of change in dimensional scores of personality disorders during treatment of drug abuse patients. The drug abuse patients were monitored prospectively during treatment. Over a period of 6 years, at 3-monthly intervals, all residents in a therapeutic community for drug abuse patients were administered the Millon Clinical Multiaxial Inventory-II (MCMI-II), a questionnaire developed to measure Diagnostic and Statistical Manual of Mental Disorders (3rd ed., revised) personality disorders. Subjects who completed the MCMI-II at least at four different times were selected for this study (n = 72). Results of the study showed that treatment had resulted in significant changes in the dimensional scores of some personality disorders, whereas other dimensional scores did not change at all. Implications for treatment are discussed.

Factors associated with abstinence, lapse or relapse to heroin use after residential treatment: protective effect of coping responses

AIMS

This study investigates factors associated with abstinence, lapse or relapse to heroin use after residential treatment and, specifically, the extent to which changes in cognitive, avoidance and distraction coping responses were related to heroin use and other drug use outcomes.

DESIGN, SETTING, PARTICIPANTS

The sample comprised 242 clients from 23 residential programmes in the NTORS project, who used heroin before treatment and who were followed-up after treatment during the first 12 months of the study.

MEASUREMENTS

Data on client characteristics and problems, coping responses, drug use and other outcomes, were collected by structured face-to-face interviews.

FINDINGS

Many clients (60%) used heroin after treatment, with the first occasion of heroin use usually occurring very soon after leaving treatment: 40% remained abstinent from heroin. Analyses were conducted for three groups based upon heroin outcome status (abstinent, lapsed, relapsed). Clients who avoided a full relapse to heroin use (abstinent and lapse groups) consistently made more use of cognitive, avoidance and distraction coping strategies at follow-up than at intake. Treatment completion was related to better outcome. The lapse and relapse groups reported higher rates of use of illicit drugs other than heroin after treatment than the abstinent group.

CONCLUSIONS

Despite generally satisfactory drug use outcomes, the lapses and relapses to heroin use give rise to concern. Treatment services should develop further and strengthen relapse prevention and relapse coping skills among drug misusers.

Predictors of program completion for women in residential substance abuse treatment

Although there is increasing emphasis on providing drug treatment programs for women that address their specific needs (including parenting and childcare), some women still fail to complete treatment. Because of the limited information about the barriers involved, this study examines pretreatment characteristics as predictors of program completion for 87 women who were pregnant or who entered residential treatment with their children. By using a multivariate prediction model, three significant predictors of treatment completion were identified: education level, recent arrests, and peer deviance. Women who completed program requirements were more likely to have a high school degree or equivalent, no arrests in the 6 months before admission, and friends who were less deviant. These findings support the need for specialized education and services that address social deviancy of pregnant and/or parenting women. Other predictors that approached significance and deserve further study include marital status, number of children in treatment, child welfare involvement, cocaine use, and psychological depression.

Predicting retention in a residential drug treatment alternative to prison program

One hundred and fifty felony drug offenders diverted from prison to community-based, residential drug treatment alternative to prison program completed a comprehensive interview as part of a longitudinal study. Treatment completion predictors were sought examining intake data (demographics, family, social, employment, medical, psychological, criminal, sexual behavior, drug use and treatment histories). Logistic regression results found completers had more social conformity and close friends, and less need for employment counseling, felony drug convictions, drug dealing income, and unprotected sex than dropouts. Completers were also less likely to encounter recent problems with significant other, have a psychiatric history, experience gunshot or stabbing, and commenced heroin use at older ages than dropouts. However, completers reported higher alcohol use than counterparts. Further analyses explored subcategory models: "life choice" (substance use, criminal and sexual behavior), static (background and dispositional), and dynamic situational influences (employment, psychological state, recent and past encounters). Treatment implications considering findings are discussed.