Web-based vs In-person Personalized Feedback Intervention for Comorbid Substance Use and Disordered Gambling

This study is enrolling participants by invitation only.
National Institute on Drug Abuse (NIDA)
Information provided by (Responsible Party):
Mary Larimer, University of Washington
ClinicalTrials.gov Identifier:
First received: February 3, 2012
Last updated: December 10, 2013
Last verified: December 2013
Rates of gambling and substance use behaviors are elevated among emerging adults (ages 18-24), and these behaviors are individually and jointly associated with a host of negative consequences. Evidence suggests there is significant overlap between these behaviors as well as comorbidity of associated mental disorders (i.e., pathological gambling and substance abuse/dependence). Prior research suggests that a brief in-person delivered personalized feedback intervention (PFI) may be an effective method of reducing these behaviors and their associated consequences among emerging adults. Thus, the purpose of this study is to determine the relative efficacy of an in-person delivered PFI versus a Web-based PFI in reducing gambling, alcohol and marijuana use behaviors and related-consequences in a sample of emerging adults, as well as explore potential moderators and mediators of intervention efficacy and the longevity of intervention effects (over a period of 18-months).

Condition Intervention Phase
Alcohol Consumption
Behavioral: Personalized Feedback Intervention
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Prevention
Official Title: RTC of Web Versus In-Person SUD and Comorbidity Treatment

Resource links provided by NLM:

Further study details as provided by University of Washington:

Primary Outcome Measures:
  • gambling behavior and consequences [ Time Frame: across 18 months ] [ Designated as safety issue: No ]

Estimated Enrollment: 375
Study Start Date: February 2010
Estimated Study Completion Date: January 2015
Estimated Primary Completion Date: January 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: In-person PFI
In-person personalized feedback intervention
Behavioral: Personalized Feedback Intervention
Printed or electronic form containing personalized information about health-relevant behaviors
Experimental: Web-based PFI
Web-based personalized feedback intervention
Behavioral: Personalized Feedback Intervention
Printed or electronic form containing personalized information about health-relevant behaviors
No Intervention: Assessment Only
Complete online survey assessments only.


Ages Eligible for Study:   17 Years to 24 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Endorse disordered gambling behavior (including 1 or more consequence)
  • Meet diagnostic criteria for one or more substance use disorder

Exclusion Criteria:

  • Not meeting inclusion criteria
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT01529047

United States, Washington
University of Washington
Seattle, Washington, United States, 98195
Sponsors and Collaborators
University of Washington
National Institute on Drug Abuse (NIDA)
Principal Investigator: Mary E Larimer, Ph.D. University of Washington Dept of Psychiatry & Behavioral Sciences
  More Information

Responsible Party: Mary Larimer, Professor, University of Washington
ClinicalTrials.gov Identifier: NCT01529047     History of Changes
Other Study ID Numbers: 35898-C  R01DA025051 
Study First Received: February 3, 2012
Last Updated: December 10, 2013
Health Authority: United States: Institutional Review Board

Additional relevant MeSH terms:
Alcohol Drinking
Disruptive, Impulse Control, and Conduct Disorders
Drinking Behavior
Mental Disorders

ClinicalTrials.gov processed this record on May 26, 2016