{"doc_desc":{"title":"BRA_2004_GYTS_V01_M","idno":"DDI_BRA_2004_GYTS_v01_M","producers":[{"name":"Mengmeng Ji","abbreviation":"","affiliation":"World Health Organization","role":"Documentation of data"},{"name":"Melanie Cowan","abbreviation":"","affiliation":"World Health Organization","role":"Supervision and review of metadata and  documentation of study"}],"prod_date":"2019-02-28","version_statement":{"version":"Version 1.0 (February 2019)."}},"study_desc":{"title_statement":{"idno":"BRA_2004_GYTS_v01","title":"Global Youth Tobacco Survey 2004","sub_title":"Alagoas, Boa Vista, Espirito Santo Vitoria, Florianopolis, Sao Luis","alt_title":"GYTS 2004"},"production_statement":{"funding_agencies":[{"name":"World Health Organization","abbreviation":"WHO","role":""},{"name":"US Centers for Disease Control and Prevention","abbreviation":"CDC","role":""}]},"distribution_statement":{"contact":[{"name":"NCD Surveillance Team","affiliation":"World Health Organization","email":"ncdmonitoring@who.int","uri":"http:\/\/www.who.int\/ncds\/surveillance\/en\/"}]},"series_statement":{"series_name":"Global Youth Tobacco Survey","series_info":"This is the second GYTS conducted by Brazil."},"version_statement":{"version":"Public-use dataset"},"study_info":{"keywords":[{"keyword":"adolescents","vocab":"","uri":""},{"keyword":"noncommunicable diseases","vocab":"","uri":""},{"keyword":"risk factors","vocab":"","uri":""},{"keyword":"health surveys","vocab":"","uri":""},{"keyword":"tobacco","vocab":"","uri":""}],"topics":[{"topic":"Global Youth Tobacco Survey (GYTS)","vocab":"Survey","uri":""}],"abstract":"The GYTS is a school-based survey which uses a self-administered questionnaire to monitor tobacco use among youth and to guide the implementation and evaluation of tobacco prevention and control programmes.","coll_dates":[{"start":"2004","end":"","cycle":""}],"nation":[{"name":"Brazil","abbreviation":"BRA"}],"geog_coverage":"Alagoas, Boa Vista, Espirito Santo Vitoria, Florianopolis, Sao Luis","analysis_unit":"Individuals","universe":"School-going adolescents aged 13-15 years.","data_kind":"Sample survey data [ssd]","notes":"GYTS is composed of 56 \"core\" questions designed to gather data on the following seven domains:\n1. Knowledge and attitudes of young people towards cigarette smoking\n2. Prevalence of cigarette smoking and other tobacco use among young people\n3. Role of the media and advertising in young people\u2019s use of cigarettes\n4. Access to cigarettes\n5. Tobacco-related school curriculum\n6. Environmental tobacco smoke (ETS)\n7. Cessation of cigarette smoking\nCountries may add addtional optional questions, such as on shisha use, smokeless tobacco use or e-cigarettes, or country-specific questions."},"method":{"data_collection":{"sampling_procedure":"GYTS uses a global standardized methodology that includes a two-stage sample design with schools selected with a probability proportional to enrollment size. The classes within selected schools are chosen randomly and all students in selected classes are eligible to participate in the survey. \n\nA total of 464 students aged 13-15 participated in the Brazil - Alagoas GYTS.\t\nA total of 1,072 students aged 13-15 participated in the Brazil - Boa Vista GYTS. \t\nA total of 1,298 students aged 13-15 participated in the Brazil - Florianopolis GYTS. \t\nA total of 873 students aged 13-15 participated in the Brazil - Espirito Santo Vitoria GYTS. \t\nA total of 788 students aged 13-15 participated in the Brazil - Sao Luis GYTS.","coll_mode":"self-administered","weight":"The weighting formula used is:\nW=W1 * W2 * f1 * f2 * f3*f4\nThe list below shows what each variable in the formula represents.\nW1 - The inverse of the probability of selecting the school\nW2 - The inverse of the probability of selecting the class within the school\nf1 - a school-level nonresponse adjustment factor calculated by school size category (small, medium, large)\nf2 - a class adjustment factor calculated by school\nf3 - a student-level nonresponse adjustment factor calculated by class\nf4 - a post stratification adjustment factor calculated by gender and  grade","cleaning_operations":"All data processing (scanning, cleaning, editing, and weighting) was conducted at the US Centers for Disease Control."},"analysis_info":{"response_rate":"Alagoas - \nThe school response rate was 96.0%, the class response rate was 100.0%, the student response rate was 58.5%, and the overall response rate was 56.2%. \t\nBoa Vista - \nThe school response rate was 96.0%, the class response rate was 100.0%, the student response rate was 91.3%, and the overall response rate was 87.6%. \t\nEspirito Santo Vitoria - \nThe school response rate was 100.0%, the class response rate was 100.0%, the student response rate was 83.5%, and the overall response rate was 83.5%. \t\nFlorianopolis -\nThe school response rate was 96.0%, the class response rate was 100.0%, the student response rate was 84.1%, and the overall response rate was 80.8%. \t\nSao Luis - \nThe school response rate was 96.0%, the class response rate was 100.0%, the student response rate was 86.2%, and the overall response rate was 87.8%."}},"data_access":{"dataset_use":{"cit_req":"Publications based on GYTS data should use the following acknowledgement:\n\"This paper uses data from the Global Youth Tobacco Survey (GYTS). GYTS is supported by the World Health Organization and the US Centers for Disease Control and Prevention.\"","conditions":"The user undertakes: \n(1) to acknowledge the data source. \n(2) to share any planned publications with WHO prior to publication.\n(3) to offer co-authorship of any reports or publications using the survey results  to the coordinator of the survey.\n(4) to use the data for non-commercial, not-for-profit public health purposes only.","disclaimer":"The data is being distributed without warranty of any kind. The responsibility for the use of the data lies with the user. In no event shall the World Health Organization be liable for damages arising from its use."}}},"schematype":"survey"}