The comparability of solicited versus clinic subjects in alcohol treatment research

Development and evaluation of objective trial performance metrics for multisite clinical studies: Experience from the AlcHep Network

BACKGROUND

Recruitment and retention are critical in clinical studies but there are limited objective metrics of trial performance. We tested if development of trial performance metrics will allow for objective evaluation of study quality. Performance metrics were developed using data from the observational cohort (OBS) and randomized clinical trial (RCT) arms of the prospective Alcoholic Hepatitis Network.

METHODS

Yield-rate (%YR; eligible/screened), recruitment index (RI; mean recruitment time/patient), completion index (CI; average number of days to complete the follow-up/patient), and protocol adherence index (AI; average number of deviations/subject recruited) were determined.

RESULTS

2250 patients (1168 for OBS; 1082 for RCT) were screened across 8 sites. Recruitment in the RCT (57% target) was similar to that in the OBS (59% target). Of those screened, 743 (63.6%) subjects in the OBS and 147 (13.6%) subjects in the RCT were enrolled in the study. In OBS study, 253 (34.1%) subjects, and in the RCT, 68 (46.3%) subjects, completed the study or reached a censoring event. Across all sites (range), YR for OBS was 63.6% (41.3-98.3%) and for RCT was 13.6% (5.5-92.6%); RI for OBS was 1.66 (8.79-19.85) and for RCT was 4.05 (19.76-36.43); CI for OBS was 4.87 (22.6-118.3) and for RCT was 8.75 (27.27-161.5); and AR for OBS was 0.56 (0.08-1.04) and for RCT was 1.55 (0.39-3.21. Factors related to participants, research design, study team, and research sponsors contributed to lower performance metrics.

CONCLUSIONS

Objective measures of clinical trial performance allow for strategies to enhance study quality and development of site-specific improvement plans.

TRIAL REGISTRATION NUMBER

ClinicalTrials.gov NCT4072822 NCT03850899.

Why do People Stop Their Drug Use? Results from a General Population Sample

This paper describes results from a pilot study that assessed the reasons for change provided by former drug users in a representative sample of the general population. As part of a random digit dialing telephone survey, people were asked about their past use of cannabis, cocaine/crack, tobacco and alcohol. In a series of open-ended questions, participants who had stopped their consumption of the drug (or reduced it to moderate levels for alcohol) were asked what had led them to stop (or reduce) their consumption. Reasons for change among this representative sample are presented along with comparisons across different drugs.

The relationship between the quality of drug user treatment and program completion: understanding the perceptions of women in a prison-based program

To determine why some women offenders complete prison-based drug user treatment and others leave early, clients' (N = 101) perceptions of various aspects of the quality of the treatment experience were compared. Analyses of both quantitative and qualitative data indicate that clients who completed the program had a more favorable perception of staff and felt empowered by the experience in treatment. Most of the clients who left early did so because of conflicts or disagreements with the program's rules. We discuss how a supportive approach to personal development may enhance client perceptions of program quality and increase retention rates.

Drug treatment careers. A conceptual framework and existing research findings

While outcomes for any single intervention are important to determine, the long term evaluation of multiple, sequential interventions is at least equally important. One strategy for examining this process is that of the treatment career. A treatment careers perspective applies a longitudinal dynamic approach to identify and understand key factors influencing the development of, and transitions in the course of, drug dependence and its treatment. After presenting an overview of the treatment careers perspective, this paper reviews and discusses relevant research issues and findings on treatment seeking, utilization and resistance, entry and reentry, engagement and retention, client treatment matching, and outcomes. Key findings include high resistance to entering treatment by many drug users, late development of treatment careers relative to addiction and criminal careers, short durations of most treatment episodes, cumulative and facilitative effects of treatment experiences, and beneficial effects of matching clients to treatment. The treatment careers perspective provides a useful framework within which findings on drug treatment can be better integrated and critical issues can be identified for further research, leading to a better understanding of drug dependence and its treatment.

Alcohol treatment outcome methodology: state of the art 1989-1993

This article reviews the 61 alcohol treatment outcome studies published from 1989-1993 with respect to methodology. Although better assessment of subjects' pretreatment characteristics was noted, a minority of studies met even the basic requirements of experimental studies. Further, some reversals of methodological progress were observed in several areas, particularly in collecting outcome data from multiple sources. It is suggested that funding agencies and journal editors require that submissions meet minimum standards for adequate outcome evaluation.

Fostering self-change among problem drinkers: a proactive community intervention

This paper describes the rationale and design for a recently implemented study involving a community-based intervention designed to foster self-change for individuals who otherwise would be unlikely to seek formal help or treatment for their alcohol problem. The study is based on research examining natural recovery processes with alcohol abusers and on clinical trials using a Guided Self-Change model of treatment with problem drinkers. Advertisements and mailed pamphlets are used to solicit individuals who wanted to change their drinking on their own using self-help materials. Respondents are screened and, if eligible, are randomly assigned to two conditions: Guided Self-Change (GSC) or Educational Materials Control (EMC) (projected N = 788): All subjects complete and mail in several brief assessment forms. Subjects in the GSC group receive advice and personalized feedback based on their assessment answers. Subjects in the EMC group receive educational pamphlets prepared for general medical and mental health settings. Subject characteristics and drinking-related history variables for the first 10% of the sample are presented. Subjects will be followed up at 12 months following the intervention.

Help-seeking and recovery by problem drinkers: characteristics of drinkers who attended Alcoholics Anonymous or formal treatment or who recovered without assistance

Most problem drinkers do not seek formal treatment, yet some achieve problem resolution without it. This research investigated variables related to help-seeking and to long-term drinking outcomes in a 3 x 2 factorial design, using 126 problem drinkers who varied in their help-seeking history (no assistance, A.A. only, or treatment plus A.A.) and current drinking status (abstinent more than 6 months or engaging in problem drinking). Dependent variables included alcohol-related negative consequences, dependence symptoms, drinking patterns, other drug use, and demographic characteristics. Formal treatment utilization was associated with greater psychosocial dysfunction, especially in interpersonal relationships, and with greater nonprescribed drug use. Alcohol dependence levels were not related to help-seeking, but higher levels were associated with an abstinent drinking status. Abstinent subjects also showed some evidence of greater social stability, but demographic variables, including gender, did not otherwise differentiate the groups. These findings suggest that help-seeking and attainment of abstinence are somewhat independent processes, but that both relate more to the functional consequences of problem drinking than to stable drinker characteristics.

Weighing up the pros and cons: help-seeking by drug misusers in Baltimore, USA

Forty drug misusers receiving treatment in Baltimore completed questionnaires, originally administered to drug misusers in London, about their reasons for seeking help and their worries about the treatment. Seeking help was related to the experiences of addiction, loss of control over life and financial and family difficulties. The main fears were of failing treatment. These responses are similar to those obtained in the London group. There was little correlation between objective assessment and subjects' views of their problems. This study illustrates the complexities of coming for treatment and it emphasises the need for social and medical help.

A comparison of predictors of treatment drop-out of women seeking drug and alcohol treatment in a specialist women's and two traditional mixed-sex treatment services

The problem of high levels of client drop-out in drug and alcohol treatment is frequently reported in the literature. In the course of conducting an evaluation of a specialist women's treatment service, the inadequacy of the data on women-specific predictors of treatment drop-out was highlighted. Using a retrospective design, the characteristics of 160 women who left treatment less than 5 days after admission were compared to the 160 women who stayed longer than 5 days and were enrolled in the evaluation study. The findings of this study suggested that women who were employed, had a history of sexual assault (especially in adulthood), nominated alcohol as their drug of choice, were not married, older than 25 years of age and had demonstrated a sympathy with the agency's treatment philosophy were less likely to drop-out of treatment. In addition, for lesbian women, women with a history of sexual assault in childhood, and those with dependent children, attendance at a specialist women's service reduced the incidence of treatment drop-out.

Superior outcome of females over males after brief treatment for the reduction of heavy drinking

Problem drinkers (52 males, 38 females) recruited through advertisements were randomly assigned to one of three treatments:

GUIDELINES

three sessions of advice using a pamphlet outlining basic steps for achieving abstinence or moderate drinking. Manual: three sessions of instruction in the use of a 'self-help' manual presenting a step-by-step approach for attaining abstinence or moderate drinking. Therapist: six or more sessions of instruction in the methods outlined in the 'self-help' manual. At 3, 6 and 12 months follow-up, no significant differences were found among the groups in reduction of heavy drinking days (i.e. days when consumption exceeded four drinks, each containing 13.6 g/ethanol). Overall, the number of heavy days were reduced from an average of 43 at intake, to 20 over the 1-year follow-up period. Females, however, had significantly greater reductions than males (75% versus 35%). Three months after treatment the rate of successful moderate drinkers was significantly higher for females than males in the GUIDELINES (60% versus 33%) and the Manual condition (63% versus 18%), but not in the Therapist condition (25% versus 35%). At 1-year follow-up, females were more successful than males in all conditions. Mean changes in GGT and MCV levels lended support to the change in drinking status (from heavy drinker at intake to moderate drinker at follow-up), based on clients' self-reports.