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AFRICA TOBACCO SITUATIONAL ANALYSIS TOBACCO FREE SCHOOL ENVIRONEMNT INITIATIVE IN ERITREA

AFRICA TOBACCO SITUATIONAL ANALYSIS TOBACCO FREE SCHOOL ENVIRONEMNT INITIATIVE IN ERITREA. Survey Methodology By Hagos Ahmed, NSO NATIONAL CONFERNCE ON TOBACCO FREE SCHOOL ENVIRONMENT CHAMBER OF COMMERCE 9-10 JULY 2009 ASMARA. Contents. Sample design Questionnaire Design

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AFRICA TOBACCO SITUATIONAL ANALYSIS TOBACCO FREE SCHOOL ENVIRONEMNT INITIATIVE IN ERITREA

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  1. AFRICA TOBACCO SITUATIONAL ANALYSISTOBACCO FREE SCHOOL ENVIRONEMNT INITIATIVE IN ERITREA Survey Methodology By Hagos Ahmed, NSO NATIONAL CONFERNCE ON TOBACCO FREE SCHOOL ENVIRONMENT CHAMBER OF COMMERCE 9-10 JULY 2009 ASMARA Research Team on Tobacco Use and Control In Eritrea

  2. Contents • Sample design • Questionnaire Design • Recruitment and training • Fieldwork and data processing • Coverage and Response Rate • Data Analysis Research Team on Tobacco Use and Control In Eritrea

  3. Sample Design The sample is representative and is intended to get reliable estimate of tobacco use and control indicators for both students and school personnel at: • Regional level • Middle and Secondary school level • WYSS • College Research Team on Tobacco Use and Control In Eritrea

  4. Students Research Team on Tobacco Use and Control In Eritrea

  5. A) Middle and Secondary School Sample Size Determination • Based on the level of precision the estimates • Domain estimates are assumed to have same level of precision (Facilitates comparisons among domains) Assumptions • The 2005 proportion of any tobacco users at national level obtained by the GYTS survey (MoH) was used to determine sample size for each of the domains (p=0.082) Research Team on Tobacco Use and Control In Eritrea

  6. Sample Size Determination Cont’d • Margin of error (e) of 3% • Non-response rate of 4.5% • 95% confidence Interval (z=1.96) Formula n=z2pq/e2, where q=1-p n=330 from each domain (Maekel, Gash-Barka, SawaSeconday, and Colledges) Research Team on Tobacco Use and Control In Eritrea

  7. Number of Sample Schools • Cluster/school intake of 30 was found to be optimal in providing efficient estimates and field operational convenience • 11 schools each from zoba Maekel and Gash-Barka • The schools are distributed among the middle and secondary schools in such a way that the estimates at these levels will have similar level of precision (Middle=12, Secondary=10) Research Team on Tobacco Use and Control In Eritrea

  8. Selection Methodology (1/3) • Two stage stratified cluster sampling • First stage: Selection of Clusters/Schools using probability proportional to size (PPS) • Second stage: Selection of students using linear systematic random sampling (SRS) Research Team on Tobacco Use and Control In Eritrea

  9. Selection of Schools (2/3) • Sampling Frame: The 2008 List of middle and secondary schools in Maekel and Gash-Barka regions with their number of students complied by the MoE • Probability Proportional to Size (PPS) has been used to select the schools to be surveyed Research Team on Tobacco Use and Control In Eritrea

  10. Selection of Students (3/3) In Each Selected School • Linear systematic random sampling (SRS) methodology was used to select the sample of students • The 2009 list of students was used as a sampling frame Research Team on Tobacco Use and Control In Eritrea

  11. B. WarsayYikealo Secondary School • Single stage stratified random sampling method (stratification=previous zoba and sex) • 330 Students were selected using linear systematic random sampling (SRS). • The 2009 list of students by stream, sex, and other characteristics was used as a sampling frame Research Team on Tobacco Use and Control In Eritrea

  12. C. Higher level Education (1/2) • Single stage stratified sampling method was used (stratification=sex) • All colleges were covered • 330 students from all colleges were selected for interview • The sample was distributed proportionally among the colleges depending on their size Research Team on Tobacco Use and Control In Eritrea

  13. Higher level Education (2/2) • In each college, the share was again allocated proportionally among diploma and degree as well as male and female students • In each college, separate list of male and female students arranged by year and department was used as a sampling frame to select the students to be interviewed Research Team on Tobacco Use and Control In Eritrea

  14. School Personnel Research Team on Tobacco Use and Control In Eritrea

  15. Selection of School Personnel (1/2) • Sample size=400 • Based on margin of error of 5%, 95% confidence interval, prevalence of any tobacco use of 0.5 (maximum variability), and non-response rate of 5%. • Distributed un-proportionally among the domain of analysis (Maekel=161, GB=89, WYSS=65, and College=85) Research Team on Tobacco Use and Control In Eritrea

  16. Selection of School Personnel(2/2) • The school share was allocated among males and females proportionally • Sample of school personnel were selected using SRS procedure mentioned above • In each school, the 2009 separate list of male and female school personnel was used to select the sample of school personnel Research Team on Tobacco Use and Control In Eritrea

  17. Conceptual Framework (2/2) Availability and Price Environmental Tobacco Smoke Exposure School curriculum and Policy Media and Advertising Cessation • The school share was allocated among males and females proportionally • Sample of school personnel were selected using SRS procedure mentioned above • In each school, the 2009 separate list of male and female school personnel was used to select the sample of school personnel Knowledge and Attitudes Tobacco Use prevalence Research Team on Tobacco Use and Control In Eritrea

  18. Questionnaire Design (1/2) • Core GYTS and GSPS • GYTS and GSPS conducted in 2004 by MoH • Reference to questionnaires of similar studies elsewhere • Consultation of wide-range of literature • Consultation with stakeholders • Reflect the current situation of the country Research Team on Tobacco Use and Control In Eritrea

  19. Questionnaire Design (2/2) Two types of questionnaires • Quantitative Students School Personnel • Qualitative (Focus Group Discussion) Students and school personnel Key informants (MoE, MoH, NUEYS, NUEW, etc.) Low professionals Business Community Research Team on Tobacco Use and Control In Eritrea

  20. Coverage and Response Rate Research Team on Tobacco Use and Control In Eritrea

  21. Recruitment and Training • Staff from CBE, CASS, and EIT were recruited as data collectors on the basis of their experience; • One day training and briefing was given to the field staff; • Training included: (i) Presentation on questionnaire content and structure (ii) administration of the questionnaires (iii) sampling procedure (iv) data quality measurements Research Team on Tobacco Use and Control In Eritrea

  22. Fieldwork and Data Processing • Following the training, fieldwork for the study was conducted within two weeks period. • Close monitoring and supervision was made during fieldwork to ensure that quality, complete, and consistent data is collected • All completed questionnaires were brought to Asmara University for data processing consisting of: • Manual editing; • Data entry; and • Secondary editing. • Data entry was done using CSPro software with 10% verification for data entry error Research Team on Tobacco Use and Control In Eritrea

  23. Data Analysis • Tabulation plan prepared • SPSS used for analysis (simple frequencies, descriptive statistics, tables) • Weight variable has been inserted into data set • All analysis were based on weighted cases Research Team on Tobacco Use and Control In Eritrea

  24. THANK YOU Research Team on Tobacco Use and Control In Eritrea

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