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National Statistical Office, Thailand 2-6 December 201 3 , Hanoi, Viet Nam

This summary highlights the evaluation methods and challenges faced during the 2010 Population and Housing Census in Thailand, including improving field operations, increasing local participation, and solving international migration issues.

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National Statistical Office, Thailand 2-6 December 201 3 , Hanoi, Viet Nam

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  1. Census Evaluation National Statistical Office, Thailand 2-6 December 2013 , Hanoi, Viet Nam

  2. Summary of Population and Housing census 1910-1947 Conducted by Ministry of Interior, called “Household Census” 1960-2010 Conducted by National Statistical Office 1970 Added Housing 2010100th Anniversary of Thai Population Census

  3. “Everyone is counted” in the 2010, Population and Housing Census: A big challenge in the decade

  4. 2010 Population and Housing census 100th Anniversary Population Census in Thailand 1. Improve field operation in big cities 2. Increase local people and organizations participation 3. Solve the problem on international migration 4. Improve data capturing/processing/ dissemination system 5. Improve quality control

  5. To collect basic information on population and living quarters To provide data for small administrative units To measure changes of population and living quarters over 10 years 2010 Population and Housing census Census Objective 5

  6. Population Pyramid 2000 2010 Male Male Female Female

  7. 2010 Male Female

  8. 2010 Population and Housing census The objectivesof the census data evaluation ; Used of products of evaluation ; Measure accuracy of the census data Identify source of error(non-sampling error) • To provide user with a level of confidence when utilizing the data • To explain errors in the census results • To improve the quality of the next census 8

  9. 2010 Population and Housing census Organization of evaluation The census evaluation program carried out by NSO.; Social Statistical Bureau (Population Statistical Group) Statistical Forecasting Bureau (To analysis specific item) Policy and Statistical Technique Bureau (Statistical Evaluation Group) 9

  10. 2010 population and housing census Methods used to evaluate census data Census data was evaluated by using Demographic analysis of census results • Analysis of internal consistency check (tabulation , age-sex distribution, age pyramid) • Using previous censuses (population growth, balancing equation,..) Comparison with other household surveys Comparison with administrative record 10

  11. 2010 population and housing census Methods used to evaluate census data Census data was evaluated by using Post enumeration survey (PES) • To measure level of both coverage and content errors • Sample Design : Stratified One-Stage Sampling (sample unit was enumeration area : EA : 2,159 EA) • Matching results • Listing : evaluated coverage error • Enumeration : evaluated content error (age, sex, marital status, completed education) 11

  12. There was a significant improvement in the reporting of the age-sex structure of the population used in related products 2010 population and housing census Main results of evaluate census data Evaluation of age-sex structure: Report of Population Projections for Thailand, 2010-2040 ; estimated base on the 2010 census results 12

  13. Internal evaluation of marital status data showed high consistency in the distribution of the population by marital status (which represented by the population who were single, married, widowed and divorced). External evaluation of marital Status data showed consistency of marital status data in the 2010 census with the data of 2009 Reproductive Health Survey. 2010 population and housing census Main results of evaluate census data Evaluation of marital status data : 13

  14. 2010 population and housing census Main results of evaluate census data Evaluation of employment data: • There was consistency between employment data in the 2010 census and the labor force survey according to the different characteristic of • Employed, Unemployed person • Work status • Industry sector 14

  15. 2010 population and housing census Challengers in conducting census data evaluation Developing Post - Enumeration survey Technic • Tool for using to collect data • Matching exercise (manual to computer) • Adjust census figure 15

  16. 2010 population and housing census Main results of evaluate census data PES : Coverage error Household 2.3 % Net Coverage error rate :NCR 77 % Completeness rate :CR Population Net Coverage error rate :NCR 4.0 % 72 % Completeness rate :CR 16

  17. 2010 population and housing census Main results of evaluate census data PES : Content error Age Degree of Agreement :DA more than 80% SEX Degree of Agreement :DA Marital status Degree of Agreement :DA Less than 80% Level of ED. Attainment Degree of Agreement :DA 17

  18. Thank You for Your Attention 18

  19. Census Data Collection Data collection using (Multi Modal Method) Census 2010 :the first time that NSO has several channels for people to fill in their information 1. Face-to-face interview 2. Self-enumeration (Drop off and Pick up or mail back) 3. Internet 4. Phone interview Data collection period 1-30 September2010

  20. New Year Card Shopping bag Plastic fan Car sticker Census Publicity Materials Wall & Table calendar, Car sticker, and others Jacket, Cap, Bag

  21. Planning for 2010 PHC Solve the problem on international migration • Developing a survey technique and outreach strategy for incorporating migrant population in Thailand’s National Census,2010. : Pilot study under technical assistance(2008) by World Bank and IOM

  22. Planning for 2010 PHC Improve Data Capture/ Processing &Dissemination System • Increse the use of ICR • Develop more user-friendly system : Census Info, Data Warehouse • Publish more analytical papers : collaborate research with academic institutions • Establish network with academic institutions :create more in-depth analysis of PHC results • Promote the use of PHC at national, provincial and local levels

  23. Planning for 2010 PHC - Field edit checks of the data for completeness and consistency 4) Centralized editing for data correction (Manual and Machine Editing) Quality Control 1) Intensive training: theoretical and practical( 4 days) 2) Field supervisors monitor the data collection process - Re-interviews (2 households/EA) 3) Scanning of the questionnaire using ICR 5) Post Enumeration Survey (PES)

  24. After the completion of the census data collection, a post enumeration survey (PES) was carried out by the National Statistical Office (except Bangkok, Nonthaburi, Samut Prakan, and Samut Sakhon). A stratified one-stage sampling was adopted in each area (systematic sampling) ; the selected samples were 2,159 enumeration areas. The purposes of the PES were to determine the completeness and the accuracy and to evaluate the coverage error and the content error of the census data.

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