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Measurement and Methodology for Daily Patterns of Drug Use and Related Behaviors


Thanks to new technology, prospective data collection using the interactive voice response (IVR) system and text-messaging (TM) has become possible in recent years. These new measurements have the advantages of cutting costs of staff time as well as minimizing recall bias and tendency to underreport socially undesirable behaviors. The long-term goal of this project is to abstract crucial information from daily process data of health risk behaviors to inform prevention and intervention. The overall objective of this application, which is the next step toward attainment of our long-term goal, is to develop cost-effective measurement and cutting-edge methodology to collect and analyze daily process data.


Aim 1: Develop cutting-edge statistical methodology to address the missing data issue of prospective measurements (IVR and TM) and to examine reactivity and validity based on daily patterns of health risk behaviors (drug/alcohol use, violence, and HIV risk sexual behavior).

Aim 2: Conduct an experimental study using a high risk sample from the FYI study with a novel design to evaluate compliance, reactivity and validity under different measurements and assessment schedules.


Study participants include 500 at-risk youth (ages 14-24) from the the Flint Youth Injury (FYI) study. The FYI is a 2-year longitudinal study of youth who sought care at the Hurley Medical Center Emergency Department in Flint, MI, and who reported drug use in the past 6 months.