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Establishing a register-based statistical system Example: Population and housing censuses in Norway. Statistical Training Course Use of Administrative Registers in Production of Statistics Warzaw 14 – 17 March 2014 Harald Utne, Statistics Norway harald.utne@ssb.no.
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Establishing a register-based statistical systemExample: Population and housing censuses in Norway Statistical Training Course Use of Administrative Registers in Production of Statistics Warzaw 14 – 17 March 2014 Harald Utne, Statistics Norway harald.utne@ssb.no
Norwegian Censuses 1960 – 2011 • 1801: First complete census • 1960: Last fully traditional census Census data used to establish CPR (in 1964) • 1970 Census: Mainly traditional Census used to • Check and update CPR • Establish Register of Education (in Statistics Norway) • 1980 Census: Questionnaires shortened and sent by mail • Registers used to rationalise data collection: Mail out – mail back • No enumerators • Demographic variables taken from CPR
Norwegian Censuses 1960 – 2011 (2) • 1990 Census • Register data on demography, education, income, geographical characteristics • Questionnaires for data on labour marked, households and housing • Sample survey • Labour market register used in estimation • 2001 Census • All data on persons from registers • Data on and households based on registers and questionnaires • Housing data based on questionnaires • Full coverage survey (all households) • 2011 Census: Totally register-based • Establish a system for register-based censuses
Historical development, main trends: • Extensive use of census data in establishing registers • Use of “census data” for administrative purposes: • Multiple legal base for Census • 2001 in Norway: Statistics Act, CPR, Cadastre • Step-by-step development • Developing a register-based census may take time!
Register-based population and housing census system Other registers Social security Unemployed persons Education Income P P P P P Population Reg. Job registers P B Business register A A P = Personal id number B = Business id number A = Numerical address Addresses Buildings Dwellings • Units covered in base registers: Persons, dwellings/buildings and enterprises/establishment • Derived units: Families and households • Persons linked to • Dwellings • Workplaces (establishments) through job registers
Census data from registers – “tertiary use” Wages Income Adm. registers Emp-loyees CPR Employment Income Education Statistical registers in Statistics Norway Population CENSUS FILE Census
Census data system before 2001 Other registers Social security Unemployed persons Education Income P P P P P Central Population Reg. Job registers P B Business register A A P = Personal id number B = Business id number A = Numerical address Addresses Buildings Dwellings No register on dwellings No link person- dwelling, that is no household register
Norwegian 2001 Census Goals • Produce Census statistics for 2001 • Establish a basis for the 2011 register-based census • The Dwelling Address Project
The Dwelling Address Project • Major goals • Extend the Cadastre to comprise dwellings, not only buildings • Add dwelling number to street address • Main Street 8A, H0103 • Establish a link between dwellings and resident persons (in CPR) • Using data from census forms • Main problem: Multi-dwelling buildings • Participants • Statistics Norway (Census 2001) • Tax Inspectorate (CPR) • Norwegian Mapping Authorities (Cadastre) • Use “census data” for administrative purposes • Multiple legal base for Census 2001
Multi-dwelling buildings before Census 2001 ? H0102 H0103 H0101 H0104 Main street 8 A
Goal for Census 2001 H0102 H0103 H0101 H0104 Main street 8 A H0101 BUT-----------
Multi-dwelling buildings after Census 2001, result H0102 H0103 H0101 H0104 Main street 8 A Main street 8A H0102 Main street 8 A H0101 55 % of persons in multi-dwelling houses linked to a unique dwelling address. Following up necessary!
Following up on the Dwelling Address Project • Statistics Norway played an active role – pushing forward • Quality monitoring • Situation by end of 2010: 95 % of population linked to a dwelling
Comparing register-based and traditional censuses Advantages • Reduced response burden • Reduced costs • Specific census costs rather low • No need to hire and train a census staff every tenth year • Census statistics and subject matter statistics based on same sources • Comparability • Annual “census statistics”
Comparing register-based and traditional censuses Disadvantages • Only variables available in or derived from registers included • Some restrictions on definitions • Dwelling households, not housekeeping units • Legal place of residence, not usual place of residence • No collection tool for emerging needs • Sample surveys may be used, but not for small area statistics
Traditional Costs Response burden Annual statistics ? Relevant registers? Register-based censuses – the process Legal base? Public approval? Linking? Investigation Quality Relevance Accuracy Coverage Timeliness Partly register-based Fully traditional Traditional and Sample surveys or Yearly updates Registers and Sample survey Fully register- based Registers and Traditional New technologies Reg. and ad hoc Sample survey Reg. and existing Sample survey
Census costs Census costs in UNECE countries (Europe and North America) • Traditional census (30): 5,57 $ per capita • Combined censuses (10): 3,94 $ per capita • Register-based censuses (9) : 0,24 $ per capita • Traditional censuses • Variation in costs caused by national circumstances, legislation • From 1 to 40 $ per capita • Combined censuses • Most expensive in countries with full enumeration • Register-based censuses • Most expensive for countries using registers for the first time • Norway 0,50 $ - 10 % of costs in 2001 Census • Major savings: Data collection
Traditional Costs Response burden Annual statistics ? Relevant registers? Register-based censuses – the process Legal base? Public approval? Linking? Investigation Quality Relevance Accuracy Coverage Timeliness Partly register-based Fully traditional Traditional and Sample surveys or Yearly updates Registers and Sample survey Fully register- based Registers and Traditional New technologies Reg. and ad hoc Sample survey Reg. and existing Sample survey