Global Youth Tobacco Survey 2007

For the 2007 Myanmar GYTS, the same sampling procedure as in 2001 was followed. In 2007, altogether 50 schools were selected. At the first step, grades that capture most of 13-15 years old were identified as 7th, 8th, 9th and 10th graders. In the Myanmar Basic Education System, there are basic education primary schools, basic education middle schools and basic education high schools. Basic middle schools have grades 0 to 8, and basic high schools have either grade 0 to 10 or 5 to 10. A detailed list of all schools in the whole country with 7 to 10 grades was collected from the State and Divisional Education Departments. Name of schools, enrollment of 7, 8, 9 and 10 students and their addresses were compiled and entered into Spreadsheets.

A total of (20,184) schools was eligible for the study. All schools containing seventh, eighth, ninth and tenth grades that contained 40 or more students were included in the sampling frame. The list of the schools was sent to CDC, Office on Smoking and Health. A two-stage cluster sample design was used to produce representative sample of students in eight, ninth and tenth grades for all of Myanmar. The first-stage sampling frame consisted of all schools containing seventh, eight, ninth and tenth grades. A total of 50 schools were chosen proportional to enrollment size. The second sampling stage consisted of systematic equal probability sampling (with a random start) of classes from each school that participated in the survey. All classes in the selected schools were included in the sampling frame. All students in selected classes were eligible for participation.