PMID- 27008417 OWN - NLM STAT- MEDLINE DCOM- 20170106 LR - 20221207 IS - 1532-2491 (Electronic) IS - 1082-6084 (Print) IS - 1082-6084 (Linking) VI - 51 IP - 5 DP - 2016 TI - Tracking and Locating Itinerant Subjects With a Rechargeable Incentive Card: Results of a Randomized Trial. PG - 658-63 LID - 10.3109/10826084.2015.1126748 [doi] AB - BACKGROUND: High attrition among research participants undermines the validity and generalizability of field research. This study contrasted two incentivizing methods--money orders (MOs) or rechargeable incentive cards (RICs)--with regard to rates of participants' study engagement and follow-up contact over a 6-month period. METHODS: Substance abusers (N = 303) in Los Angeles, California were recruited and randomized to either an MO (control) or RIC (experimental) condition. All participants were asked to call the researchers at the beginning of each calendar month for the ensuing 5 months to update their locator information, even if nothing had changed. Each call resulted in a $10 payment, issued immediately via the RIC system or by MO by mail. Research staff located and interviewed all participants at Month 6. Contact logs assessed level of effort required to locate participants and conduct follow-up interviews. RESULTS: Relative to controls, RIC participants, especially those with low ability to defer gratification, initiated more monthly calls. Six-month follow-up rates did not differ between RIC (75%) and controls (79%), though the RIC condition was associated with an average staff time savings of 39.8 minutes per study participant. DISCUSSION: For longitudinal public health research involving itinerant study participants, the RIC method produces a modest benefit in study engagement and reduced staff time devoted to participant tracking and payments. However, the overall cost-effectiveness of this approach will depend on the pricing model of the card-issuing vendor (which in turns depends on the scale of the project, with per-unit costs falling for larger projects). FAU - Farabee, David AU - Farabee D AD - a Department of Psychiatry and Biobehavioral Sciences, UCLA , Los Angeles , California , USA. FAU - Hawken, Angela AU - Hawken A AD - b School of Public Policy, Pepperdine University , Malibu , California , USA. FAU - Calhoun, Stacy AU - Calhoun S AD - c Department of Criminology, Law and Society, UC Irvine , Irvine , California , USA. FAU - Veliz, Robert AU - Veliz R AD - a Department of Psychiatry and Biobehavioral Sciences, UCLA , Los Angeles , California , USA. FAU - Grossman, Jason AU - Grossman J AD - a Department of Psychiatry and Biobehavioral Sciences, UCLA , Los Angeles , California , USA. FAU - Zhang, Yiwen AU - Zhang Y AD - b School of Public Policy, Pepperdine University , Malibu , California , USA. LA - eng GR - R42 DA025387/DA/NIDA NIH HHS/United States GR - R42DA02538/DA/NIDA NIH HHS/United States PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, N.I.H., Extramural DEP - 20160323 PL - England TA - Subst Use Misuse JT - Substance use & misuse JID - 9602153 SB - IM MH - Adult MH - California MH - Cost-Benefit Analysis MH - Female MH - Follow-Up Studies MH - *Ill-Housed Persons MH - Humans MH - Male MH - Middle Aged MH - *Motivation MH - Research Design MH - *Substance-Related Disorders MH - Young Adult PMC - PMC4874473 MID - NIHMS778090 OTO - NOTNLM OT - Follow-up OT - incentivizing OT - tracking EDAT- 2016/03/24 06:00 MHDA- 2017/01/07 06:00 PMCR- 2017/04/15 CRDT- 2016/03/24 06:00 PHST- 2016/03/24 06:00 [entrez] PHST- 2016/03/24 06:00 [pubmed] PHST- 2017/01/07 06:00 [medline] PHST- 2017/04/15 00:00 [pmc-release] AID - 10.3109/10826084.2015.1126748 [doi] PST - ppublish SO - Subst Use Misuse. 2016;51(5):658-63. doi: 10.3109/10826084.2015.1126748. Epub 2016 Mar 23.