International Youth Development Study (IYDS)
IYDS is a study investigating the epidemiology and etiology of substance use and abuse in Washington State and the State of Victoria in Australia. This project examined the extent of differences in normative messages of harm reduction versus abstinence in prevention programs and school policies, and the effect of these policies on drug use.
Learn more about IYDS.
Project Highlights/Unique Features
- Collaboration with researchers in Australia implementing data collection protocol developed at the SRD.
- 3-year panel study of a statewide probability sample of 2,885 students consented in 5th, 7th and 9th grade in 2001.
- High consent rates and excellent retention rates over 3-year study.
IYDS Completion Rates*
|
| Consenting | # | 2971 | -- | -- | | % | 76% | -- | -- | | School-based | # | 2885 | 2857 | 951** | | % | 100% | 99% | 99% | | Phone | # | 2854 | -- | -- | | % | 99% | -- | -- | | Mail | # | 149 | 252 | 138 | | % | 97% | 77% | 83% |
*Youth & Parent Completion rates = # surveyed / total consented sample.
*School Administrator Completion rate = # surveyed / total eligible sample.
**Middle grade cohort only.
|
