The 2011 Iranian Population and Housing Census SRTC ------------------------------------------------------------------------------------ The 2011 Iranian Population and Housing Census Plans for Census Data Analysis Z. Rezaei Ghahroodi Statistical Research and Training Center, Iran. Needs Assessment Conference on Census Analysis in Asia (NACCA) 23-25 November, 2011

SRTC Outline ------------------------------------------------------------------------------------ Necessity of census time reduction General specifications Organization and Geographical map Pre-tests of the census Census forms and topics Data processing and Dissemination Census evaluation The most innovations History of Iranian Population Census Census goals Necessity of the census 7th Population and Housing Census Census data analysis

History of Iranian Population census SRTC History of Iranian Population census The first full enumeration in Iran was taken in 1956 that almost all of people was enumerated and information on sex, literacy status, economy activity, marital status and housing characteristics was collected. After 1956 next censuses were conducted every 10 years up to 2006. The 2011 Iranian Population and Housing Census is the first census which is to be implemented on a five-year interval after the previous census in 2006.

History of Iranian Population census SRTC History of Iranian Population census Census Year Date Total Census Workers Population (000) 1956 1 Nov - 16 Nov 27,607 18,955 1966 30 Oct - 19 Nov 12,885 25,789 1976 29,854 33,709 1986 8 Oct - 22 Oct 55,850 49,445 1996 23 Oct - 16 Nov 61,459 60,055 2006 28 Oct – 22 Nov 91,500 70,496

SRTC Census Goals The main goals of census is collecting basic information on: Population characteristics such as age, sex, migration, marital status, economic activity, etc, Housing characteristics including occupancy status, floor area, etc.

SRTC Necessity of Census Necessity of census is caused by absence of perfect, exact and update data on population and housing from other sources. Access to perfect, exact and update data on population and housing Data processing and getting new information Knowing the population structure and understanding present needs Increasing the programming ability to welfare and develop

7th Population and Housing Census SRTC 7th Population and Housing Census About the 2011 Iranian Population and Housing Census

Necessity of census time duration reduction SRTC Necessity of census time duration reduction Large changing in demographic indicators: population, fertility patterns, Immigration and … Determine development Index in a shorter time interval Changing provinces geographical boundaries

General Specifications SRTC General Specifications Census method: De jure Main sources of census data: Traditional Census Time: 24 October to 13 November 2011 (21 days) Data collection method: Face-to-Face interview

General Specifications SRTC General Specifications The number of Enumeration Areas: 54,000 Households (estimated): 21,000,000 Households in each EA: 400 The number of Executors: 115,000 Cities: 1,200 Villages:100,000 This numbers are approximate.

Census organization The census organization has 5 main groups as: SRTC Census organization The census organization has 5 main groups as: Designing group, Information Technology group, Supervision and Evaluation group, Public Relations, publicity and Dissemination group, Organization and Logistics group. and some other groups such as “Post Enumeration Survey group” and “Processing and Extraction group”.

Designing group Some Functions: Study and procurement of the population and housing census plan. Study of international recommendations for population and housing census. Determination of technical and executive methods of census. Procurement of technical census forms and manuals. Preparation of pre-tests plan. Preparation of the final tabulation patterns. Procurement of training plan. SRTC Designing group

Information Technology group SRTC Information Technology group Some Functions: Study and assessment of data processing methods in previous censuses and their weaknesses. Study and assessment of data processing methods in other countries. Determination of quantity and quality of equipments, requirement, manpower and expenses which required for data capturing. Procurement of required software. Preparation of data process plan.

Public Relations, publicity and Dissemination group SRTC Public Relations, publicity and Dissemination group Some Functions: Study and assessment of the publicity activities in previous censuses in Iran and worldwide. Study of all common publicity and advertisement efficiency in Iran. Procurement of slogan, stamp and several kinds of advertisement. Assessment of publicity activities in all provinces. Supervision in publication of census results and information.

Organization and Logistics group SRTC Organization and Logistics group Some Functions: Preparation of timetable for group's activities. Study and Assessment of the executive organization in previous censuses. Updating and correcting the maps of all the urban and rural areas according to the last division changes. Preparation of executive organization chart of census. Determination of executive organization and estimated manpower requirement. Procurement of necessary supplies

Supervision and Evaluation group SRTC Supervision and Evaluation group Some Functions: Preparation of supervision plan. Supervision and evaluation of activities of all groups, according to the timetable. Supervision of training, field operation and post-enumeration survey.

SRTC Pre-tests of Census The 2011 census pre-tests were conducted in two stages: stage 1 is taken in November 2009 in all provinces for determining data collection method. Internet Based Face to Face Interview Self Completion Post Based

Information Extraction SRTC Pre-tests of Census stage 2 is taken in November 2010 in Tehran and 4 other provinces for identifying the probable problems and deficiencies in all stages of census based on face to face interview and ICR system. Designing Forms ... Information Extraction

Census Forms Iran’s 2011 census forms are: SRTC Census Forms Iran’s 2011 census forms are: 4 technical forms or questionnaires: Form 1 – Listing, Form 2 – Household Questionnaire, Form 3 – Institutional Household Questionnaire, Form 4 – Village Questionnaire, and some executive or financial forms.

Census Topics Demographic characteristics such as: SRTC Census Topics Demographic characteristics such as: Relationship, Sex, Marital status, Birth date and age, Fertility, Mortality Migration characteristics such as: Place of birth, Nationality, Duration of residence, Place of previous residence.

Census Topics Social characteristics such as: SRTC Census Topics Social characteristics such as: Ability to read and write or literacy, Educational attainment, Field of education, Religion, Handicap. Economic characteristics such as: Activity status, Occupation, Institutional sector, Status in employment.

Census Topics Housing characteristics such as: SRTC Census Topics Housing characteristics such as: Occupancy status, Number of rooms, Availability of kitchen, Floor area, Number of occupants, Construction material, Main source of drinking water. Village characteristics such as: Type of road, Cultural and health care, Treatment facilities available and centers located in the village, Communication facilities and installations, Services and commercial.

SRTC Data Processing Data processing is the process of converting raw data into usable information. The process consists of various successive phases such as data capturing, coding, editing and tabulation. The choice of an appropriate method of processing is determined by the circumstances of each country. Raw Data Usable Information

SRTC Data capture methods Data capture converts the information obtained in the census to a format that can be interpreted by a computer. Data capture methods include Manual Data Entry, Optical Capture Methods (consisting of the Optical Mark Recognition (OMR)), Optical Character Recognition (OCR), Intelligent Character Recognition (ICR), Personal Digital Assistant (PDA) and the Internet.

Coding Coding Methods: SRTC Coding Coding is done where a question is open and should be answered as a text (such as occupation). Coding Methods: Manual, Computer-Assisted Coding (CAC), Automatic Coding (AC), Combination of above methods.

Editing and Imputation SRTC Editing and Imputation Raw data files contain errors of many kinds, such as: errors generated by the respondents errors caused by enumerators when, for example, they misunderstand the respondents answers errors caused by data processing operations such as data capture and coding Editing is an operation that identify invalid and inconsistent responses and corrects or imputes true values.

Census Data Dissemination SRTC Census Data Dissemination Primary results of the census will be disseminated at the end of Nov 2011. Descriptive results at total country, provinces and township levels will be ready about 6 month latter. Census results will be available through website and will published some of them. The 2 percent file of census data will be available for researchers. Detailed results for all geographical small areas can be extracted using the new version of Pars software.

Census Evaluation Coverage Errors Content Errors SRTC Census Evaluation Errors occur at all stages of the census operation and can classified into two categories. arise due to omissions, erroneous inclusions, or duplications of persons or households Coverage Errors arise due to the incorrect reporting or recording of the characteristics of persons or households Content Errors

SRTC Census Evaluation Census evaluation is undertaken in order to provide users with a level of confidence when utilizing the data, and to explain errors in the census results. Numerous methods are available for estimating coverage and content errors of censuses. Demographic analysis and Post Enumeration Survey (PES) are two major methods for evaluating census data.

Post enumeration survey SRTC Post enumeration survey Objectives: To Measure under-coverage of persons To Identify the characteristics of population sub-groups which are more likely for erroneous inclusions Applications: Evaluating the coverage error of the census Discovering the census limitations to improve the future censuses

Post enumeration survey SRTC Post enumeration survey Method: Stratified Two-stage Sampling Stratification variables (Province, Rural/Urban) PSU: Enumeration Area SSU: Group of Blocks/Villages within PSU, covering more than 100 households. Using PPS to select PSU (SSU) within each stratum (PSU) Sample Size: 618 Enumeration

The Most Innovations New items added in 2011 census: National number, SRTC The Most Innovations New items added in 2011 census: National number, The way that people use the Internet and computers, The second family residence, Immigration status from outside to inside, Event of death in household, Agricultural Utilization. Using PDA in enumeration of some urban areas Coding by combination of AC and CAC

SRTC The Most Innovations Using new methods of teaching in a Web environment Performing two pre-tests in 2009 and 2010 Additional controls using the national number The centralized data processing and software to recognize handwritten Persian Continuous in ICR Online supervision using the Internet

Plans for Census Data Analysis SRTC Plans for Census Data Analysis

Census data analysis Study on characteristics of Safe dwelling SRTC Census data analysis Study on characteristics of Safe dwelling Study on physical characteristics of private dwellings and its changes during the past periods Study on Floating population in Iran Study on foreign immigrants in Iran Analysis on geographical centralization of foreign immigrants in Iran

SRTC Census data analysis Study on socio-economic characteristics of foreigners Domestic migration flows and characteristics of immigrants by provinces Study on relation of demographic indices and economic development by provinces Analysis of demographic characteristics by provinces Analysis of socio-economic characteristics by religion Study on marriage situation

SRTC Census data analysis Study on socio-economic and demographic characteristics of ageing in Iran Study on changes in the average marriage age of females and effective factors on it Comparison of households welfare indices in Tehran municipality areas Comparison of social and demographic characteristics in Tehran municipality areas Study on prevalence disability rate and its relation with the provinces development

Census data analysis Having computer and internet access by households SRTC Census data analysis Having computer and internet access by households Analysis on villages socio-economic indices Analysis of supply and participation rate of labour force by country and provinces Analysis of the employment status of higher education graduates Study on human capital in Iran Study on capital accumulation dynamics in Iran

Census data analysis Poverty mapping for Iran SRTC Census data analysis Poverty mapping for Iran Population projection in Iran, 2006 - 2026 Study on population growth effects on the migration and housing status Study on relation of urban, migration and province's development indices Study on education in Iran Study on female head of households status in Iran Study on female status in Iran

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