Therapist and computer‐based brief interventions for drug use within a randomized controlled trial: effects on parallel trajectories of alcohol use, cannabis use and anxiety symptoms
Drislane, Laura E.; Waller, Rebecca; Martz, Meghan E.; Bonar, Erin E.; Walton, Maureen A.; Chermack, Stephen T.; Blow, Frederic C.
2020-01
Citation
Drislane, Laura E.; Waller, Rebecca; Martz, Meghan E.; Bonar, Erin E.; Walton, Maureen A.; Chermack, Stephen T.; Blow, Frederic C. (2020). "Therapist and computer‐based brief interventions for drug use within a randomized controlled trial: effects on parallel trajectories of alcohol use, cannabis use and anxiety symptoms." Addiction 115(1): 158-169.
Abstract
Background and AimsDespite their high comorbidity, the effects of brief interventions (BI) to reduce cannabis use, alcohol use and anxiety symptoms have received little empirical attention. The aims of this study were to examine whether a therapist‐delivered BI (TBI) or computer‐guided BI (CBI) to address drug use, alcohol consumption (when relevant) and HIV risk behaviors, relative to enhanced usual care (EUC), was associated with reductions in parallel trajectories of alcohol use, cannabis use and anxiety symptoms, and whether demographic characteristics moderated reductions over time.DesignLatent growth curve modeling was used to examine joint trajectories of alcohol use, cannabis use and anxiety symptoms assessed at 3, 6 and 12 months after baseline enrollment.SettingHurley Medical Center Emergency Department (ED) in Flint, MI, USA.ParticipantsThe sample was 780 drug‐using adults (aged 18–60 years; 44% male; 52% black) randomly assigned to receive either a TBI, CBI or EUC through the HealthiER You study.Interventions and comparatorED‐delivered TBI and CBIs involved touchscreen‐delivered and audio‐assisted content. The TBI was administered by a Master’s‐level therapist, whereas the CBI was self‐administered using a virtual health counselor. EUC included a review of health resources brochures in the ED.MeasurementsAssessments of alcohol use (10‐item Alcohol Use Disorders Identification Test), cannabis use (past 30‐day frequency) and anxiety symptoms (Brief Symptom Inventory‐18) occurred at baseline and 3‐, 6‐ and 12‐month follow‐up.FindingsTBI, relative to EUC, was associated with significant reductions in cannabis use [B = –0.49, standard error (SE) = 0.20, P < 0.05) and anxiety (B = –0.04, SE = 0.02, P < 0.05), but no main effect for alcohol use. Two of 18 moderation tests were significant: TBI significantly reduced alcohol use among males (B = –0.60, SE = 0.19, P < 0.01) and patients aged 18–25 years in the TBI condition showed significantly greater reductions in cannabis use relative to older patients (B = –0.78, SE = 0.31, P < 0.05). Results for CBI were non‐significant.ConclusionsEmergency department‐based therapist‐delivered brief interventions to address drug use, alcohol consumption (when relevant) and HIV risk behaviors may also reduce alcohol use, cannabis use and anxiety over time, accounting for the overlap of these processes.Publisher
Substance Abuse and Mental Health Services Administration Wiley Periodicals, Inc.
ISSN
0965-2140 1360-0443
Other DOIs
Types
Article
Metadata
Show full item recordCollections
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.