Addictive Behaviors 2017;64:137-142. [doi: 10.1016/j.addbeh.2016.08.040]
Thomas F. Northrup, PhD, Tracy L. Greer, PhD, N. Robrina Walker, PhD, Chad D. Rethorst, PhD, Diane Warden, PhD, MBA, Angela L. Stotts, PhD, Madhukar H. Trivedi, MD (all from University of Texas, TX Node).
Missing data in substance use disorder (SUD) research pose a significant threat to internal validity. Participants terminate involvement or become less likely to attend intervention and research visits for many reasons, which should be addressed prior to becoming problematic. During a 9-month study targeting stimulant abuse, early dropouts and participant reported attendance barriers led to implementing a structured, pre-randomization protocol with participants about retention and solution-focused strategies (the "Fireside Chat").
NIDA Clinical Trials Network protocol CTN-0037, Stimulant Reduction Using Dosed Exercise (STRIDE), was a two-arm, multisite randomized clinical trial testing treatment-as-usual for stimulant abuse/dependence augmented by Exercise or Health Education. For both groups, study intervention visits at the site were schedule 3/week for 12 weeks followed by 1/week for 24 weeks. During The Chat, research staff thoroughly reviewed participants' expectations, and barriers and solutions to retention. Fifteen participants were randomized (to Exercise or Health Education) prior to and fourteen were randomized after Chat implementation. Intervention and monthly follow-up attendance (before and after implementation) were compared at the site (N=29) that developed and rigorously implemented The Chat.
Results found that individuals who participated in The Chat (n=14) attended significantly more intervention visits during weeks 1-12 (p<0.001) and weeks 13-36 (p<0.05) and attended more research visits (p<0.001).
Conclusions: The myriad barriers to research engagement that participants face require careful consideration by all stakeholders involved in research. The time investment for The Chat by potential participants and research staff is not trivial but it could produce important benefits for the study. Indeed, the increased validity of study results when less data are missing and staff time savings as the study progresses (e.g., less need for efforts to contact participants who have missed visits) are both quite important. Cooperative dialogue, beginning early in the recruitment phase and prior to randomization, is critical to engaging and retaining participants in SUD research as the collaborative partners they should be considered to be. (Article (Peer-Reviewed), PDF, English, 2017)
Keywords: Behavior therapy | CTN platform/ancillary study | Exercise | Retention - Research | Stimulant abuse | Addictive Behaviors (journal)
Document No: 1225, PMID: 27610591, PMCID: PMC5143209.
Submitted by CTN Dissemination Librarians, 9/7/2016.