A Real-time, Contextual Intervention Using Mobile Technology to Reduce Marijuana Use in Youth (MOMENT)
The purpose of this study is to further develop and test the Momentary Self-Monitoring and Feedback + Motivational Enhancement Therapy (MOMENT) intervention, a real-time, contextual intervention to reduce marijuana use among primary care patients.
Behavioral: Mobile self-monitoring
Behavioral: Motivational feedback messages
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Investigator)
Primary Purpose: Treatment
|Official Title:||A Real-time, Contextual Intervention Using PDAs to Reduce Marijuana Use in Youth|
- Marijuana desire [ Time Frame: 3 months ] [ Designated as safety issue: No ]Desire to use marijuana when in top-3 trigger context
- Marijuana use following trigger exposure [ Time Frame: 3 months ] [ Designated as safety issue: No ]Marijuana use following exposure to top-3 trigger context
- Frequency of marijuana use [ Time Frame: 3 months ] [ Designated as safety issue: No ]Marijuana use events/day
- Percent days abstinent [ Time Frame: 3 months ] [ Designated as safety issue: No ]30-day percent days abstinent from marijuana use
- Motivation to reduce marijuana use [ Time Frame: 3 months ] [ Designated as safety issue: No ]Daily score on 3 scales - readiness to reduce marijuana use, importance of reducing use, and confidence in ability to reduce use
|Study Start Date:||January 2013|
|Estimated Study Completion Date:||December 2015|
|Estimated Primary Completion Date:||September 2015 (Final data collection date for primary outcome measure)|
Active Comparator: MET only
Motivational Enhancement Therapy only
Other Name: Motivational Enhancement Therapy
Experimental: No feedback
Motivational Enhancement Therapy + momentary and daily mobile self-monitoring, but no feedback on triggers or use behaviors
Other Name: Motivational Enhancement TherapyBehavioral: Mobile self-monitoring
The full MOMENT intervention: Motivational Enhancement Therapy + momentary and daily mobile self-monitoring + motivational feedback messages prompting participants to consider their individualized coping strategies to avoid using marijuana
Other Name: Motivational Enhancement TherapyBehavioral: Mobile self-monitoring Behavioral: Motivational feedback messages
This study proposes a pilot randomized trial to further develop and test the Momentary Self-Monitoring and Feedback + Motivational Enhancement Therapy (MOMENT) intervention, a real-time, contextual intervention to reduce marijuana use over three months in 15-to-24-year-old primary care patients who use frequently. We will randomize 108 youth to one of three arms: 1) MOMENT (MET + momentary self-monitoring + context-dependent feedback), 2) No-feedback (MET + momentary self-monitoring), or 3) MET-only. The three study arms will permit evaluation of the relative contributions of the self-monitoring and feedback components of the intervention above-and-beyond the MET and directly test the influence of the intervention on the link between momentary context and marijuana-related outcomes.
The specific aims of the study are
Specific Aim 1: Continued Feasibility Evaluation. In our preliminary work, we demonstrated that 1) youth perceive MOMENT to be easy to understand, comfortable, motivating, and helpful in reducing their marijuana use, 2) we can recruit 4 participants/month (minimum rate for the proposed study), and 3) we can successfully implement a MOMENT intervention study in the proposed recruitment sites. Based on this work, we have identified additional areas of feasibility on which to focus in the proposed study. Specifically, we aim to achieve:
1a. A signal response rate of at least 70% during each of three periods of momentary data collection - baseline, intervention, and 3-month follow-up.
1b. A diary response rate of at least 70% during each momentary data collection period
c. A retention rate of at least 80% of participants at the 3-month follow-up.
Specific Aim 2. Early-Stage Efficacy Exploration. Our preliminary work showed that both momentary and individual-level outcomes improved from baseline to three months post-intervention. The primary momentary outcomes are desire to use marijuana when in a triggering context and likelihood of use following exposure to a triggering context. The primary individual-level outcomes are number of use events/week, 30-day percent of days abstinent, dose/use event, and measures of motivation (importance of, readiness for, and confidence about reducing use). Based on the preliminary findings, we will explore these early-stage efficacy questions:
- a. Will improvements in momentary outcomes be observed with MOMENT, but not MET-only?
(1) The association between exposure to self-identified trigger contexts and momentary desire to use marijuana will be attenuated at three months, compared to pre-intervention.
(2) The likelihood of marijuana use following exposure to a trigger context will be reduced at three months.
2b. Will improvements in individual-level outcomes be greater with MOMENT vs. MET-only?
- The reduction in marijuana use frequency (events/week and 30-day percent of days abstinent) and dose (per use event) will be greater at three months.
- The increase in motivation to reduce or discontinue use will be greater at three months.
2c. Will improvements in both levels of outcomes be greater with MOMENT vs. No-feedback?
|Contact: Allegra Spalding, BSemail@example.com|
|Contact: Lydia A Shrier, MD, MPH||617-355-8306|
|United States, Massachusetts|
|Boston Children's Hospital Adolescent/Young Adult Medical Clinic||Not yet recruiting|
|Boston, Massachusetts, United States, 02115|
|Martha Eliot Health Center Adolescent Clinic||Not yet recruiting|
|Jamaica Plain, Massachusetts, United States, 02130|
|Principal Investigator:||Lydia A Shrier, MD, MPH||Boston Children's Hospital|