Patterns of Health Services Use Associated With Veterans Affairs Outpatient Substance-Use Treatment

Implementation of Client Incentives within a Recovery Navigation Program

OBJECTIVE

Multiple detoxification admissions among clients with substance use disorders (SUD) are costly to the health care system. This study explored the impact on behavior and cost outcomes of recovery support navigator (RSN) services delivered with and without a contingent incentive intervention.

METHODS

New intakes at four detoxification programs were offered RSN-only (N=1116) or RSN plus incentive (RSN+I; N=1551) services. The study used a group-level cross-over design with the intervention in place at each clinic reversed halfway through the enrollment period. RSN+I clients could earn up to $240 in gift cards for accomplishing 12 different recovery-oriented target behaviors. All eligible clients entering the detoxification programs were included in the analyses, regardless of actual service use.

RESULTS

Among RSN+I clients, 35.5% accessed any RSN services compared to 22.3% in the RSN-only group (p<.01). Of RSN+I clients, 19% earned one, 12% earned two and 18% earned three or more incentives; 51% did not earn any incentives. The majority of incentives earned were for meeting with the RSN either during or after detoxification. Adjusted average monthly health care costs among clients in the RSN-only and RSN+I groups increased at a similar rate over 12 months post-detoxification.

DISCUSSION

Possible explanations for limited uptake of the incentive program discussed include features of the incentive program itself, navigator-client communication, organizational barriers and navigator bias. The findings provide lessons to consider for future design and implementation of multi-target contingency management interventions in real-world settings.

Acute care hospital utilization among medical inpatients discharged with a substance use disorder diagnosis

OBJECTIVE

Hospital discharge may be an opportunity to intervene among patients with substance use disorders to reduce subsequent hospital utilization. This study determined whether having a substance use disorder diagnosis was associated with subsequent acute care hospital utilization.

METHODS

We conducted an observational cohort study among 738 patients on a general medical service at an urban, academic, safety-net hospital. The main outcomes were rate and risk of acute care hospital utilization (emergency department visit or hospitalization) within 30 days of discharge. The main independent variable was presence of a substance use disorder primary or secondary discharge diagnosis code at the index hospitalization.

RESULTS

At discharge, 17% of subjects had a substance use disorder diagnosis. These patients had higher rates of recurrent acute care hospital utilization than patients without substance use disorder diagnoses (0.63 vs 0.32 events per subject at 30 days, P < 0.01) and increased risk of any recurrent acute care hospital utilization (33% vs 22% at 30 days, P < 0.05). In adjusted Poisson regression models, the incident rate ratio at 30 days was 1.49 (95% confidence interval, 1.12-1.98) for patients with substance use disorder diagnoses compared with those without. In subgroup analyses, higher utilization was attributable to those with drug diagnoses or a combination of drug and alcohol diagnoses, but not to those with exclusively alcohol diagnoses.

CONCLUSIONS

Medical patients with substance use disorder diagnoses, specifically those with drug use-related diagnoses, have higher rates of recurrent acute care hospital utilization than those without substance use disorder diagnoses.

Factors related to recent alcohol abstinence among individuals who received previous treatment

BACKGROUND

Alcohol problems are widespread throughout the United States. While treatment can be successful, many individuals continue to drink. One method to assess treatment results over time is by investigating abstinence as a measure of success.

OBJECTIVES

The main aim of this study is to investigate factors that may be associated with past-year (PY) abstinence among individuals who received prior-to-past-year (PPY) treatment for alcohol problems, while also assessing abstinence by treatment subtype.

METHOD

This study uses data from 1742 individuals who received PPY treatment for alcohol problems in the 2001-2002 National Epidemiologic Survey on Alcohol and Related Conditions (NESARC). Logistic regression models were used to assess the strength of association between alcohol abstinence and key demographic and clinical factors.

RESULTS

The level of PY abstinence was 36.5% among those who previously sought treatment for alcohol problems. Younger age groups and those who were nicotine dependent or had a cannabis use disorder were less likely to be abstinent. There were no differences based on sex or PY major depression or generalized anxiety disorder.

CONCLUSION

While causal inferences cannot be made, these results suggest that the majority of people continue to drink, even after being treated for alcohol problems. Nonetheless, variation may exist depending on the form of treatment a person receives. More research is needed regarding long-term levels of abstinence after individuals receive treatment.

Service utilization during and after outpatient treatment for comorbid substance use disorder and depression

Patients with comorbid substance use disorder (SUD) and depression incur greater treatment costs than those with either disorder alone. Integrated treatment targeting both issues concurrently has been shown to reduce substance use and depression in this population, but little is known about the effects of such treatment on the utilization of costly health services. This study compared 18-month patterns of service utilization for 236 veterans with comorbid SUD depression randomly assigned to 6 months of either Integrated Cognitive Behavioral Therapy (ICBT) or Twelve-Step Facilitation Therapy. Treatment group differences were found for the utilization of psychotropic medication services and inpatient hospitalization. Higher rates of therapy attendance, lower baseline depression, and receiving ICBT all predicted shorter admissions for those hospitalized during treatment. Ethnicity and gender predicted medication service use both during and following treatment. The findings provide evidence supporting the long-term cost-effectiveness of integrated treatment for this high-risk population.

Alcohol-use disorders

Alcohol dependence and alcohol abuse or harmful use cause substantial morbidity and mortality. Alcohol-use disorders are associated with depressive episodes, severe anxiety, insomnia, suicide, and abuse of other drugs. Continued heavy alcohol use also shortens the onset of heart disease, stroke, cancers, and liver cirrhosis, by affecting the cardiovascular, gastrointestinal, and immune systems. Heavy drinking can also cause mild anterograde amnesias, temporary cognitive deficits, sleep problems, and peripheral neuropathy; cause gastrointestinal problems; decrease bone density and production of blood cells; and cause fetal alcohol syndrome. Alcohol-use disorders complicate assessment and treatment of other medical and psychiatric problems. Standard criteria for alcohol dependence-the more severe disorder-can be used to reliably identify people for whom drinking causes major physiological consequences and persistent impairment of quality of life and ability to function. Clinicians should routinely screen for alcohol disorders, using clinical interviews, questionnaires, blood tests, or a combination of these methods. Causes include environmental factors and specific genes that affect the risk of alcohol-use disorders, including genes for enzymes that metabolise alcohol, such as alcohol dehydrogenase and aldehyde dehydrogenase; those associated with disinhibition; and those that confer a low sensitivity to alcohol. Treatment can include motivational interviewing to help people to evaluate their situations, brief interventions to facilitate more healthy behaviours, detoxification to address withdrawal symptoms, cognitive-behavioural therapies to avoid relapses, and judicious use of drugs to diminish cravings or discourage relapses.