Predictors of 2-year drinking outcomes in a Swedish treatment sample

Elderly alcoholics compared to middle-aged alcoholics in outpatient treatment - 6-month follow-up

PURPOSE

This study examined 6-month drinking outcomes of elderly patients compared with middle-aged patients in a clinical sample after initiation of outpatient treatment for alcoholism.

MATERIALS AND METHODS

In a clinical prospective cohort study, 1398 consecutive patients from a municipality outpatient alcohol clinic were included. A total of 208 elderly patients aged from 60 to 82 years and 1190 middle-aged patients from 40 to 59 years participated in the study. The following psychosocial treatment interventions were offered: cognitive behavioral therapy, family therapy and supportive consultations. Using an 'intention-to-treat' method, primary outcomes included drinking outcomes (self-reported abstinence rates, drinking 3 drinks or less per day, and change in Addiction Severity Index [ASI] composite scores) during the 30 days prior to 6-month follow-up; secondary outcome was compliance to the recommended treatment.

RESULTS

Compared to middle-aged, among elderly patients a higher proportion were females (33.5% vs. 42.8%) and had a lower family/social ASI-composite score (0.17 vs. 0.12) at baseline. Higher alcohol and family/social ASI-composite scores were inversely correlated with abstinence. Elderly patients had a higher chance for abstinence compared to middle-aged patients (Odds ratio 95% [confidence interval]) 1.40 (1.03-1.92). The proportion of elderly patients that drank 3 or less drinks per day was 17.8%, compared to 10.8% among middle-aged (p < .01). Finally, elderly patients obtained a higher compliance, which was similarly associated with abstinence (OR =2.46 (1.95-3.11)).

DISCUSSION AND CONCLUSIONS

Elderly patients, who receive psychosocial outpatient treatment for alcoholism, have better 6-month outcomes within a range of drinking outcome measures compared to middle-aged patients.

Comparative outcome in patients with delirium tremens receiving care in emergency services only versus those receiving comprehensive inpatient care

BACKGROUND

Delirium tremens (DT) is a medical emergency. Many cases are treated and discharged from emergency services (ES), after complete or partial resolution of delirium. Few receive comprehensive inpatient addiction treatment (CIAT) after the initial emergency management.

OBJECTIVE

The objective of this study was to compare 6-month outcomes of treatment in alcohol-dependence syndrome (ADS) patients presenting with DT receiving either only emergency care or emergency care along with CIAT.

MATERIALS AND METHODS

In this prospective observational study, all patients of ADS presenting in DT over a 1-year period were followed up for 6 months. Patients who received care only in the emergency services (ES) (111) were compared with patients who received ES followed by CIAT (90). Primary followup measure was regular followup (RFU) at outpatient department, and patients not presenting for RFU received telephonic followup (TFU). Alcohol use status was monitored at 6 months, as per Feuerlein and Küfner criteria.

RESULTS

Patients who received both ES and CIAT had better RFU compared to patients treated in the ES alone at 6 months (71/90 vs. 17/111, respectively, P < 0.005). CIAT also resulted in better combined follow-up (RFU and TFU) (85/90 vs. 60/111, respectively, P < 0.005). Compared to ES treatment group alone, ES plus CIAT group had fewer relapses (41/85 vs. 42/60, respectively, P < 0.05). The most common reason for direct discharge from ES was nonavailability of beds for inpatient treatment.

CONCLUSIONS

Merely emergency treatment of ADS patients presenting with DT does not provide satisfactory treatment outcome with respect to alcohol use. ES treatment followed by CIAT ensures better outcome in the form of fewer relapses and better follow up.

Satisfaction with substance use treatment and 12-step groups predicts outcomes

INTRODUCTION

Satisfaction is a critical component of patient-centered care, yet little is known about the degree to which patient satisfaction is linked to subsequent outcomes, especially in substance use disorder (SUD) treatments and 12-step groups. The current study assessed the degree to which satisfaction with Department of Veterans Affairs (VA) outpatient SUD treatment and with 12-step groups, both measured at 6 months after treatment initiation, was associated with additional treatment utilization and better substance-related outcomes during the next 6 months, that is, up to 1 year after treatment initiation.

METHODS

Participants were 345 patients entering the VA SUD treatment program.

RESULTS

More satisfaction with treatment and with 12-step groups at 6 months was associated with less alcohol use severity and more abstinence at 1 year. More treatment satisfaction was related to less subsequent medical severity, whereas more 12-step group satisfaction was related to less subsequent psychiatric severity. More 12-step group satisfaction was related to subsequent increases in 12-step group attendance and involvement. A single item assessing overall satisfaction appeared best related to subsequent outcomes.

CONCLUSIONS

Satisfied SUD treatment patients and 12-step mutual help members appeared to have better subsequent service utilization patterns and treatment outcomes. SUD treatments can improve outcomes by monitoring and enhancing patient satisfaction.

Baseline predictors of treatment outcome in Internet-based alcohol interventions: a recursive partitioning analysis alongside a randomized trial

Background

Internet-based interventions are seen as attractive for harmful users of alcohol and lead to desirable clinical outcomes. Some participants will however not achieve the desired results. In this study, harmful users of alcohol have been partitioned in subgroups with low, intermediate or high probability of positive treatment outcome, using recursive partitioning classification tree analysis.

Methods

Data were obtained from a randomized controlled trial assessing the effectiveness of two Internet-based alcohol interventions. The main outcome variable was treatment response, a dichotomous outcome measure for treatment success. Candidate predictors for the classification analysis were first selected using univariate regression. Next, a tree decision model to classify participants in categories with a low, medium and high probability of treatment response was constructed using recursive partitioning software.

Results

Based on literature review, 46 potentially relevant baseline predictors were identified. Five variables were selected using univariate regression as candidate predictors for the classification analysis. Two variables were found most relevant for classification and selected for the decision tree model: ‘living alone’, and ‘interpersonal sensitivity’. Using sensitivity analysis, the robustness of the decision tree model was supported.

Conclusions

Harmful alcohol users in a shared living situation, with high interpersonal sensitivity, have a significantly higher probability of positive treatment outcome. The resulting decision tree model may be used as part of a decision support system but is on its own insufficient as a screening algorithm with satisfactory clinical utility.

Trial registration

Netherlands Trial Register (Cochrane Collaboration): NTR-TC1155.

Treatment seeking and subsequent 1-year drinking outcomes among treatment clients in Sweden and the U.S.A.: a cross-cultural comparison

Cross-cultural comparisons provide a method for distinguishing unique aspects as well as shared aspects of different cultures. Theoretically framed by a health-services conceptual model, we examine the extent that culture-specific versus common characteristics are associated with treatment seeking and drinking outcome. Swedish (n=997) and U.S. (n=501) alcohol-dependent individuals were interviewed at baseline and 1-year (n=635 and n=384 respectively). Both studies gathered comparable background, help-seeking, and drinking data. Regression models tested predictors of 1-year follow-up drinking defined as abstinence or moderate drinking versus heavy drinking. Swedish individuals were older and had social networks comprised mostly of substance abusers compared to U.S. individuals who reported higher problem severity and greater drug involvement. Whereas U.S. individuals reported greater prior mutual-help attendance, Swedish individuals reported greater prior treatment involvement. Better 1-year drinking outcomes were reported by women, younger age groups and those with an abstinence goal in both samples. Cultural and institutional differences were apparent. For example, with Swedish individuals having a mostly non-using network predicted better outcomes, whereas lower problem severity was a predictor for U.S. individuals.

Long-Term Outcomes of Aftercare Participation following Various Forms of Drug Abuse Treatment in Scotland

Due to high relapse rates after leaving treatment, drug users are often recommended to participate in some form of lower intensity continuing care. The importance of aftercare is widely accepted, but little empirical data are available about the effectiveness of continuing services over longer periods of time and following various treatment modalities. In this study, we assessed the influence of various forms of aftercare on treatment outcomes and service utilization over a 33-month period among a naturalistic cohort of 653 drug users treated in prison or community settings, as part of the Drug Outcome Research in Scotland (DORIS study). Although participation in aftercare after initial treatment is rather unusual, the odds of having experienced a drug-free period (after 8 months) (OR = 1.91, 95% CI 1.10–3.33) and of being abstinent from heroin (after 33 months) (OR= 0.56, 95% CI 0.34–0.94) almost doubled. Program aftercare was of little additional value after intensive residential treatment, but particularly important after prison-based and community treatment and if combined with self-help participation. Consequently, attractive and fitted aftercare services should be offered as an integrated part of various treatment modalities.

Outpatient alcoholism treatment--24-month outcome and predictors of outcome

OBJECTIVES

To study the value of demographic and alcohol-related variables for predicting 24-month treatment outcome in an outpatient setting.

METHODS

Prospective observational study with 92 alcohol-dependent patients. Assessments were made by personal interviews at the beginning and end of therapy, and at the 24-month follow-up. Univariate and logistic regression analyses were performed.

RESULTS

The mean age was 46.0 (SD = 9.9) years. There were 58 males (65.2%) and 31 females (34.8%). Of the 67 patients interviewed at 2-year follow-up, 58% were abstinent and 79% improved. Differences between abstainers and non-abstainers were found for number of previous detoxifications, and number of patients attempted suicides. In addition, female gender and a higher number of prior treatments predicted negative treatment outcome.

CONCLUSION

Matching patients to different types of treatment by means of empirically based characteristics may help to improve outcome but research has failed to establish reliable predictors in that area. Data from this follow-up study confirm the role of certain clinical outcome predictors. Additionally, results give further evidence for outpatient treatment as an effective setting for alcohol-dependent patients as indicated by a favourable retention rate (84%) and outcome (minimum abstinence rate 44%).

Predicting successful treatment outcome of web-based self-help for problem drinkers: secondary analysis from a randomized controlled trial

BACKGROUND

Web-based self-help interventions for problem drinking are coming of age. They have shown promising results in terms of cost-effectiveness, and they offer opportunities to reach out on a broad scale to problem drinkers. The question now is whether certain groups of problem drinkers benefit more from such Web-based interventions than others.

OBJECTIVE

We sought to identify baseline, client-related predictors of the effectiveness of Drinking Less, a 24/7, free-access, interactive, Web-based self-help intervention without therapist guidance for problem drinkers who want to reduce their alcohol consumption. The intervention is based on cognitive-behavioral and self-control principles.

METHODS

We conducted secondary analysis of data from a pragmatic randomized trial with follow-up at 6 and 12 months. Participants (N = 261) were adult problem drinkers in the Dutch general population with a weekly alcohol consumption above 210 g of ethanol for men or 140 g for women, or consumption of at least 60 g (men) or 40 g (women) one or more days a week over the past 3 months. Six baseline participant characteristics were designated as putative predictors of treatment response: (1) gender, (2) education, (3) Internet use competence (sociodemographics), (4) mean weekly alcohol consumption, (5) prior professional help for alcohol problems (level of problem drinking), and (6) participants' expectancies of Web-based interventions for problem drinking. Intention-to-treat (ITT) analyses, using last-observation-carried-forward (LOCF) data, and regression imputation (RI) were performed to deal with loss to follow-up. Statistical tests for interaction terms were conducted and linear regression analysis was performed to investigate whether the participants' characteristics as measured at baseline predicted positive treatment responses at 6- and 12-month follow-ups.

RESULTS

At 6 months, prior help for alcohol problems predicted a small, marginally significant positive treatment outcome in the RI model only (beta = .18, P = .05, R(2) = .11). At 12 months, females displayed modest predictive power in both imputation models (LOCF: beta = .22, P = .045, R(2) = .02; regression: beta = .27, P = .01, R(2) = .03). Those with higher levels of education exhibited modest predictive power in the LOCF model only (beta = .33, P = .01, R(2) = .03).

CONCLUSIONS

Although female and more highly educated users appeared slightly more likely to derive benefit from the Drinking Less intervention, none of the baseline characteristics we studied persuasively predicted a favorable treatment outcome. The Web-based intervention therefore seems well suited for a heterogeneous group of problem drinkers and could hence be offered as a first-step treatment in a stepped-care approach directed at problem drinkers in the general population.

TRIAL REGISTRATION

International Standard Randomized Controlled Trial Number (ISRCTN): 47285230; http://www.controlled-trials.com/isrctn47285230 (Archived by WebCite at http://www.webcitation.org/5cSR2sMkp).