National Youth Tobacco Survey
The National Youth Tobacco Survey (NYTS) is a school-based survey that collects information on tobacco use from middle school (grades 6-8) and high school (grades 9-12) students. NTYS includes measures on tobacco-related behaviors, attitudes, beliefs, and exposure to pro- and anti-tobacco influences.
NYTS uses a three-stage cluster sampling design to generate a cross-sectional, nationally-representative sample of students in grades 6-12 from all 50 states and the District of Columbia. Data are adjusted for nonresponse and weighted to produce national prevalence estimates, while accounting for the complex survey design.
In 2009, of 222 randomly sampled schools, 205 participated; of 24,266 students randomly selected at participating schools, 22,679 participated, yielding an overall response rate of 84.8 percent.
Since these data were collected from youths attending middle and high school, they may not be representative of all youths in the U.S. Youths who have dropped out of school are more likely to smoke than youths who are in school.
Centers for Disease Control and Prevention: Tobacco Use among Middle and High School Students -- United States, 2000-2009. Morbidity and Mortality Weekly Report. 2007. 59(33); 1,063-1,068.