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2009 POPULATION AND HOUSING CENSUS IN VIETNAM Phnompenh, Cambodia, 14-17 November 2011

2009 POPULATION AND HOUSING CENSUS IN VIETNAM Phnompenh, Cambodia, 14-17 November 2011. 1. Brief introduction of census taking in Vietnam. Census in Vietnam. Population Census History in Vietnam. - C ensus taking dating back many centuries.

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2009 POPULATION AND HOUSING CENSUS IN VIETNAM Phnompenh, Cambodia, 14-17 November 2011

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  1. 2009 POPULATION AND HOUSING CENSUS IN VIETNAM Phnompenh, Cambodia, 14-17 November 2011

  2. 1. Brief introduction of census taking in Vietnam

  3. Census in Vietnam Population Census History in Vietnam - Census taking dating back many centuries. - The first real census of an independent Vietnam was conducted late in 1979. - Internationally recognized census concepts, design features and processing, was conducted in April 1989. - The third census was conducted in April 1999. - The last population and housing census has been conducted in 2009 with a reference time of the census is 00.00 hours, 1 April 2009.

  4. 2009 Census The Census Preparation and Legal Authority - The 2009 Census was conducted under the Prime Minister’s Decision No. 94/2008/QD-TTg on 10/7/2008. - Its main objective was to collect the basic data on population and housing of Vietnam to provide services for researching and analyzing. - A survey of 15 percent of the national population has been included to expand the census coverage, reduce the cost. - Intelligent Character Recognition (ICR) has been adopted for data capture instead of manual data entry via keyboard.

  5. 2009 Census Contents of the Census Questionnaire - Face-to-face interview. - Two questionnaires were used: a completed (short) questionnaire and a sample (long) questionnaire. + Contents of the completed questionnaire: ++ Information on population ++ Dwellings of households

  6. 2009 Census Contents of the Census Questionnaire(contd) + Contents of the sample questionnaire: ++ Information on population ++ Birth history of women aged 15-49 years ++ Information on deaths ++ Dwellings of households

  7. 2009 Census Pre-test and Pilot Census Questionnaires and materials formally used in the census have undergone three pre-tests and one pilot before being applied in the actual census.

  8. 2009 Census Mapping and household listing - Sketch maps and household listings is a basis for: + Distributing census resources. + Guiding enumerators to households. + Locating materials, questionnaires and stationery. - Whole country is divided into about 172,000 EAs. - Two types of maps: base maps and EA maps.

  9. 2009 Census Census Publicity - Set up a plan for the publicity campaign of the census. - It was launched in March 2009, reaching its crescendo during 15 March to 20 April 2009. - It was broadcasted on radio and TV, in daily newspapers both centrally and locally and even on the radio systems of the village and urban-blocks. - Telephone hot-lines were installed in both central areas and localities.

  10. 2009 Census Recruitment and Training of the Census Officials - Enumerators were assigned according to specific geographical conditions and EA size. - Team leaders were appointed to directly manage enumerators’ work. - There were supervisors at the central, provincial and district levels - All census participants have been trained very carefully.

  11. 2009 Census Data Processing and Tabulation - Used ICR technology to input information directly from questionnaires to computers instead of using keyboards. - Success of ICR technology will be the premise for its application in other statistics surveys. - The GSO in co-operation with computer Company have build software, organized training courses, tested systems, and finalized the software package for new TIS and e-Form software.

  12. 2009 Census The Census Data Dissemination - Preliminary results were released in early August 2009. - Expanded sample results were published in December 2009. - Completed results were disseminated in June 2010. - Some in-depth monographs will be printed in late 2010.

  13. 2. Overview of evaluation of census data

  14. Post enumeration survey

  15. THE POST ENUMERATION SURVEY (PES) IN VIET NAM 2009 * Census time: 0h, April 01, 2009 . Duration of the main fieldwork: from 1 –15 April * PES time: 0h, April 01, 2009. Duration of the PES fieldwork : from 5 – 30 May, 2009

  16. THE POST ENUMERATION SURVEY (PES) IN VIET NAM 2009 After finishing enumeration, post enumeration survey (PES) were conducted to define the completeness and accuracy of the census data. A set of 60 EA’s were randomly selected for re-interview which was directly organized and conducted by the Office of the Central Population and Housing Census Steering Committee. The Office of the Central Population and Housing Census Steering Committee established 6 PES teams, one PES team for one region. Each PES team contains 5 persons: The team leader was selected from the department of population and labor statistics 3 interviewers were selected from Provincial census office and 1 driver from General Statistics Office, included .

  17. THE POST ENUMERATION SURVEY (PES) IN VIET NAM 2009 In the PES, to define the completeness of the census, each usual household member was asked 4 questions: (1) full name; (2) Relationship with the head of household; (3) sex ; (4) month and year of birth or age. The responses of the PES have been compared with the census questionnaires to find data missing in the census enumeration or in the PES. We consider that the PES result is the completeness result, hence: the PES result shows both the under- count rate and over – count rate.

  18. THE POST ENUMERATION SURVEY (PES) IN VIET NAM 2009 We collected 4 measures: * N1 -The total number of persons were recorded in census form. * N2 -The total number of persons were recorded in PES form (It is a very exact record). * n1 – The number of persons were recorded in census form only, not recorded in PES forms. That is the number of persons of over count * n2 – The number of persons were recorded in PES form only, not recorded in census forms. That is the number of persons of under count .

  19. THE POST ENUMERATION SURVEY (PES) IN VIET NAM 2009The PES result of 2009 census in Viet Nam shows that the error rate is 0.3% (under count rate minus over count rate), Equivalent to about 258,000 people )

  20. Demographic methods used in 2009 census

  21. Some main indicators: Completed Result Population size Total population of Vietnam at 0:00 on 01 April, 2009 was85.846.997persons

  22. Some main indicators: Completed Result Pyramid 1979 1989 From 1979 – 2009, Vietnam population is transfering from young structure into old structure. 1999 2009

  23. According to the Population Model of the United Nations, Vietnam is in a period of “Population Bonus” Some main indicators: Completed Result Population structure

  24. Aging Index has increased; Dependent Ratio has continuously declined. Population structure

  25. Vietnam’s fertility is under the Replacement Fertility Level Fertility and Mortality Trend

  26. TFR is usually estimated indirectly using the Trussell P/F ratio technique with the assumption that the number of children born in the period 12 months prior to the survey among women age 15 to 49 years are underreported. - CBR is calculated indirectly by taking the crude birth rates directly from the survey and multiplying by the Trussell P/F ratio adjustment factor. Method to estimate fertility and mortality

  27. The General Growth Balance method (GGB) and Synthetic Extinct Generation (SEG) methods were used to assess and adjust data on reported deaths. The GGB method requires three major assumptions: (1) a closed population, that is a population not or only slightly affect by migration, (2) invariant coverage of population and deaths by age; and (3) accurate recording of age for both population and deaths. The problem of changes in census coverage may be resolved by combining the SEG and GGB methodologies. Method to estimate fertility and mortality

  28. Method to estimate fertility and mortality

  29. Method to estimate fertility and mortality • The United Nations has computerized indirect estimation of mortality through the software MORTPAK. In this software package, the CEBCS procedure is used for estimating 1q0 and the MATCH procedure for estimating e0. After applying the CEBCS procedure over a period of time, software programmers made adjustments made to some coefficients in the regression equation for estimating q(a) mentioned above and developed a new software called QFIVE to estimate 1q0 and 4q1.

  30. Challenges facing while conducting census evaluation

  31. Indirect technique requires some assumption, such as the method to estimate fertility requires TFR is still high. Now, TFR is becoming lower and lower. Therefore, we need to develop that method. - The method to estimate mortality met many difficulties. The combined BBG-SEG method can apply for whole country estimation (not affected by migration). For province level, it was quite not appropriate. So we need to know another method. - IMR now is becoming lower and lower, so the method to separate IMR by Coal Denemy model is not suitable.

  32. THANK YOU FOR YOUR KIND ATTENTION

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