The Youth Risk Behavior Survey (YRBS) is a paper survey administered in Vermont middle and high schools every two years since 1993. The survey is sponsored by the Department of Health's Division of Alcohol and Drug Abuse Programs, and the Department of Education's Coordinated School Health Programs and the CDC. The YRBS measures the prevalence of behaviors that contribute to the leading causes of death, disease, and injury among youth. Vermont surveys over 30,000 students at each administration. Weighted data is compiled to generate a representative state sample, and local data is used by schools, supervisory unions, health programs and other local organizations. The YRBS is completed in over 40 other states and there is a national weighted sample for comparison. Data are updated as it becomes available and timing is based on when results from the survey are released.
Prevalence and percentages are calculated by using descriptive statistical procedures using software such as SPSS, SAS, and/or SUDAAN. These statistics describe the proportion of individuals with a given trait in the population during a specified period of time.
Note that prior to 2013, statewide estimates were generated by weighting repossess from a representative sample of schools. In 2013, the methodology was changed and all student responses were used in creating statewide estimates, allowing for more accurate reporting. 2011 data were recalculated in the same way as 2013 data in order to improve comparisons.