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GYTS

Global Youth Tobacco Survey 2009, Campo Grande, Espirito Santo Vitoria, Sao Paulo

Brazil, 2009
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Reference ID
BRA_2009_GYTS_v01
Collections
Global Youth Tobacco Survey
Metadata
DDI/XML JSON
Created on
Feb 25, 2019
Last modified
May 02, 2019
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  • Identification
  • Version
  • Scope
  • Coverage
  • Producers and sponsors
  • Sampling
  • Data collection
  • Data processing
  • Data Access
  • Disclaimer and copyrights
  • Contacts
  • Metadata production

    • Identification

    Survey ID number

    BRA_2009_GYTS_v01
    Title

    Global Youth Tobacco Survey 2009
    Subtitle

    Campo Grande, Espirito Santo Vitoria, Sao Paulo
    Country
    Name Country code
    Brazil BRA
    Study type

    Global Youth Tobacco Survey
    Series Information

    This is the sixth GYTS conducted by Brazil.
    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.
    Kind of Data

    Sample survey data [ssd]
    Unit of Analysis

    Individuals

    Version

    Version Description

    Public-use dataset

    Scope

    Notes

    GYTS is composed of 56 "core" questions designed to gather data on the following seven domains:

    1. Knowledge and attitudes of young people towards cigarette smoking
    2. Prevalence of cigarette smoking and other tobacco use among young people
    3. Role of the media and advertising in young people’s use of cigarettes
    4. Access to cigarettes
    5. Tobacco-related school curriculum
    6. Environmental tobacco smoke (ETS)
    7. Cessation of cigarette smoking
      Countries may add addtional optional questions, such as on shisha use, smokeless tobacco use or e-cigarettes, or country-specific questions.
    Topics
    Topic Vocabulary
    Global Youth Tobacco Survey (GYTS) Survey
    Keywords
    adolescents noncommunicable diseases risk factors health surveys tobacco

    Coverage

    Geographic Coverage

    Campo Grande, Espirito Santo Vitoria, Sao Paulo
    Universe

    School-going adolescents aged 13-15 years.

    Producers and sponsors

    Funding Agency/Sponsor
    Name
    World Health Organization
    US Centers for Disease Control and Prevention

    Sampling

    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.

    A total of 1,039 students aged 13-15 participated in the Brazil - Campo Grande GYTS.
    A total of 1,157 students aged 13-15 participated in the Brazil - Vitoria GYTS.
    A total of 1,413 students aged 13-15 participated in the Brazil - Sao Paulo GYTS.
    Response Rate

    Campo Grande - The school response rate was 96.0%, the class response rate was 93.4%, the student response rate was 80.3%, and the overall response rate was 72.0%.
    Espirito Santo Vitoria - The school response rate was 96.2%, the class response rate was 100.0%, the student response rate was 85.2%, and the overall response rate was 81.9%.
    Sao Paulo - The school response rate was 84.6%, the class response rate was 100.0%, the student response rate was 83.1%, and the overall response rate was 70.3%.
    Weighting

    The weighting formula used is:
    W=W1 W2 f1 f2 f3*f4
    The list below shows what each variable in the formula represents.
    W1 - The inverse of the probability of selecting the school
    W2 - The inverse of the probability of selecting the class within the school
    f1 - a school-level nonresponse adjustment factor calculated by school size category (small, medium, large)
    f2 - a class adjustment factor calculated by school
    f3 - a student-level nonresponse adjustment factor calculated by class
    f4 - a post stratification adjustment factor calculated by gender and grade

    Data collection

    Dates of Data Collection
    Start
    2009

    Data processing

    Data Editing

    All data processing (scanning, cleaning, editing, and weighting) was conducted at the US Centers for Disease Control.

    Data Access

    Access conditions

    The user undertakes:
    (1) to acknowledge the data source.
    (2) to share any planned publications with WHO prior to publication.
    (3) to offer co-authorship of any reports or publications using the survey results to the coordinator of the survey.
    (4) to use the data for non-commercial, not-for-profit public health purposes only.
    Citation requirements

    Publications based on GYTS data should use the following acknowledgement:
    "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."

    Disclaimer and copyrights

    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.

    Contacts

    Contacts
    Name Affiliation Email URL
    NCD Surveillance Team World Health Organization ncdmonitoring@who.int http://www.who.int/ncds/surveillance

    Metadata production

    DDI Document ID

    DDI_BRA_2009_GYTS_v01_M
    Producers
    Name Affiliation Role
    Kate Sheffer World Health Organization Documentation of data
    Melanie Cowan World Health Organization Supervision and review of metadata and documentation of study
    Date of Metadata Production

    2019-01-03

    Metadata version

    DDI Document version

    Version 1.0 (January 2019).
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