title: Global youth tobacco surveillance, 2000-2007.
abstract: OBJECTIVE
  Tobacco use is a major contributor to deaths from chronic diseases. The findings from the Global Youth Tobacco Survey (GYTS) suggest that the estimate of a doubling of deaths from smoking (from 5 million per year to approximately 10 million per year by 2020) might be an underestimate because of the increase in smoking among young girls compared with adult females, the high susceptibility of smoking among never smokers, high levels of exposure to secondhand smoke, and protobacco indirect advertising.
  
  
  METHODS
  This report includes GYTS data collected during 2000-2007 from 140 World Health Organization (WHO) member states, six territories (American Samoa, British Virgin Islands, Guam, Montserrat, Puerto Rico, and the U.S. Virgin Islands), two geographic regions (Gaza Strip and West Bank), one United Nations administered province (Kosovo), one special administrative region (Macau), and one Commonwealth (Northern Mariana Islands). For countries that have repeated GYTS, only the most recent data are included. For countries with multiple survey sites, only data from the capital or largest city are presented.
  
  
  METHODS
  GYTS is a school-based survey of a defined geographic site that can be a country, a province, a city, or any other geographic entity. GYTS uses a standardized methodology for constructing sampling frames, selecting schools and classes, preparing questionnaires, conducting field procedures, and processing data. GYTS standard sampling methodology uses a two-stage cluster sample design that produces samples of students in grades associated with students aged 13-15 years. Each sampling frame includes all schools (usually public and private) in a geographically defined area containing any of the identified grades. In the first stage, the probability of schools being selected is proportional to the number of students enrolled in the specified grades. In the second sampling stage, classes within the selected schools are selected randomly. All students in selected classes attending school the day the survey is administered are eligible to participate. Student participation is voluntary and anonymous using self-administered data collection procedures. The GYTS sample design produces independent, cross-sectional estimates that are representative of each site.
  
  
  RESULTS
  The findings in this report indicate that the level of cigarette smoking between boys and girls is similar in many sites; the prevalence of cigarette smoking and use of other tobacco products is similar; and susceptibility to initiate smoking among never smokers is similar among boys and girls and is higher than cigarette smoking in the majority of sites. Approximately half of the students reported that they were exposed to secondhand smoke in public places during the week preceding the survey. Approximately eight in 10 favor a ban on smoking in public places. Approximately two in 10 students own an object with a cigarette brand logo on it, and one in 10 students have been offered free cigarettes by a tobacco company representative. Approximately seven in 10 students who smoke reported that they wanted to stop smoking. Approximately seven in 10 students who smoked were not refused purchase of cigarettes from a store during the month preceding the survey. Finally, approximately six in 10 students reported having been taught in school about the harmful effects of smoking during the year preceding the survey.
  
  
  CONCLUSIONS
  The findings in this report suggest that interventions that decrease tobacco use among youth (e.g., increasing excise taxes, media campaigns, school programs in conjunction with community interventions, and community interventions that decrease minors' access to tobacco) must be broad-based, focused on boys and girls, and have components directed toward prevention and cessation. If effective programs are not developed and implemented soon, future morbidity and mortality attributed to tobacco probably will increase.
  
  
  CONCLUSIONS
  The synergy between countries in passing tobacco-control laws, regulations, or decrees; ratifying the WHO Framework Convention on Tobacco Control; and conducting GYTS offers a unique opportunity to develop, implement, and evaluate comprehensive tobacco-control policy that can be helpful to each country. The challenge for each country is to develop, implement, and evaluate a tobacco-control program and make changes where necessary.
authors.affiliation: Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, CDC, Atlanta, GA 30341, USA. wcw1@cdc.gov
authors.forename: Charles W
authors.initials: CW
authors.lastname: Warren
authors.forename: Nathan R
authors.initials: NR
authors.lastname: Jones
authors.forename: Armando
authors.initials: A
authors.lastname: Peruga
authors.forename: James
authors.initials: J
authors.lastname: Chauvin
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Baptiste
authors.forename: Vera
authors.initials: V
authors.lastname: Costa de Silva
authors.forename: Fatimah
authors.initials: F
authors.lastname: el Awa
authors.forename: Agis
authors.initials: A
authors.lastname: Tsouros
authors.forename: Khalil
authors.initials: K
authors.lastname: Rahman
authors.forename: Burke
authors.initials: B
authors.lastname: Fishburn
authors.forename: Douglas W
authors.initials: DW
authors.lastname: Bettcher
authors.forename: Samira
authors.initials: S
authors.lastname: Asma
mesh_terms: D000293:Adolescent; D005260:Female; D014943:Global Health; D006801:Humans; D008297:Male; D011159:Population Surveillance; D012907:Smoking / Q000453:epidemiology* / Q000639:trends*; D014944:World Health Organization