egm – population & housing censuses eurostat / unece - geneva - 24/25 may 2012 building the...
DESCRIPTION
EGM – Population & Housing Censuses Eurostat / UNECE - Geneva - 24/25 May 2012 Building the address register for the 2011 Census (England & Wales) Alistair Calder – Office for National Statistics. Address Register for 2011. Role of addresses in Census 2011 Match Field check - PowerPoint PPT PresentationTRANSCRIPT
EGM – Population & Housing CensusesEurostat / UNECE - Geneva - 24/25 May 2012
Building the address register for the 2011 Census (England & Wales)
Alistair Calder – Office for National Statistics
• Role of addresses in Census 2011• Match• Field check• Evidence base & rules• Summary
Address Register for 2011
THE CENSUS FIELD OPERATION
PostOut
Special& CEs
PostBack
InternetBack
CCS
FollowUp
Enforce-ment
QuestionnaireTracking
MATCH& check
etc
ADDRESSREGISTER
THE CENSUS FIELD OPERATION
PostOut
PostBack
FollowUp
InternetBack
Special& CEs
MATCH& check
etc
ADDRESSREGISTER
Enforce-ment
CCS
QuestionnaireTracking
Addresses
Why so important for 2011?
• Post-out to deliver 95% of questionnaires• At the centre of questionnaire tracking
– focus effort on non response– target follow-up resources more effectively
• Key source for use in QA of census estimates– Address frame feeds in to estimation
Address Register for 2011AimsTo create:• best possible register of households from
available sources and fieldwork• a register that stakeholders were confident in• a register that is best value for money
> 99% complete <1% duplication
A list designed specifically for Census
So what’s the problem ?just use the national address list !
PostcodeAddress
FilePAF Valuation
Office
National Land& PropertyGazetteerNLPG
AddressLayer 2AL2
LLPGs
LLPGs
x 348
CouncilTax
TVLicense
Utilities
Emerg.Services
etc
PAF& AL2
NLPG
PAF
NLPG
95%???
PAF
NLPG
95%??? ?
new
CEs
Three main streams of work Match and validate• Match of 3 national address files
• Royal Mail – PAF (& Ordnance Survey – AL2)
• Local Government Information House - NLPG
• (and VOA data)
• Unresolved address anomalies sent to suppliers and Local Authorities (LAs)
• ONS field checks 15% of E&W
Targeting the Address Checkfinding the suspect addresses
Where to check ??
Electricity - Multiple meters
Electoral register - Multiple names
• Anomalies between sources (10%) - proxy for address complexity
• Multiple meters / Multiple names from electoral role within addresses (4%)
– proxy for complex structures +
• Stratified random sample (1%)
Criteria for checking
The Evidence Baseand evidence codes
Evidence base …..
Evidence IA RM F LA 3rd ?
9 High Street 1L 1F 1R 1L 1L1G
10 High Street 0C 1F 1R 0C 1L1G
11 High Street 0S 1F 0X 1L 1L0X
11a High Street 0X 1F 0X 0X 0X0X
11b High Street 0X 1F 0X 0X 1D0X
Flat 1/11 High Street 1L 0X 1R 1L 0X1G
Flat 2/11 High Street 1L 0X 1R 1L 0X1G
Evidence base …..
Evidence IA RM F LA 3rd ?
9 High Street 1L 1F 1R 1L 1L1G
10 High Street 0C 1F 1R 0C 1L1G
11 High Street 0S 1F 0X 1L 1L0X
11a High Street 0X 1F 0X 0X 0X0X
11b High Street 0X 1F 0X 0X 1D0X
Flat 1/11 High Street 1L 0X 1R 1L 0X1G
Flat 2/11 High Street 1L 0X 1R 1L 0X1G
Evidence base …..
Evidence IA RM F LA 3rd ?
9 High Street 1L 1F 1R 1L 1L1G
10 High Street 0C 1F 1R 0C 1L1G
11 High Street 0S 1F 0X 1L 1L0X
11a High Street 0X 1F 0X 0X 0X0X
11b High Street 0X 1F 0X 0X 1D0X
Flat 1/11 High Street 1L 0X 1R 1L 0X1G
Flat 2/11 High Street 1L 0X 1R 1L 0X1G
Evidence base …..
Evidence IA RM F LA 3rd ?
9 High Street 1L 1F 1R 1L 1L1G
10 High Street 0C 1F 1R 0C 1L1G
11 High Street 0S 1F 0X 1L 1L0X
11a High Street 0X 1F 0X 0X 0X0X
11b High Street 0X 1F 0X 0X 1D0X
Flat 1/11 High Street 1L 0X 1R 1L 0X1G
Flat 2/11 High Street 1L 0X 1R 1L 0X1G
Evidence base …..
Evidence IA RM F LA 3rd ?
9 High Street 1L 1F 1R 1L 1L1G
10 High Street 0C 1F 1R 0C 1L1G
11 High Street 0S 1F 0X 1L 1L0X
11a High Street 0X 1F 0X 0X 0X0X
11b High Street 0X 1F 0X 0X 1D0X
Flat 1/11 High Street 1L 0X 1R 1L 0X1G
Flat 2/11 High Street 1L 0X 1R 1L 0X1G
Keep the data up-to-date !• Constantly match in Change• Pick up change late
Research, Data Cleaning & Other Sources
• Clerical processes Desktop comparison, GIS, Internet, Aerial photography
• Other Sources Vacant houses, electoral register, utility meters
Three main streams of work
Royal Mail vs. ONS Address CheckNon-Residential vs. ResidentialFlats above shops, Complex addresses
221 Cannock Road, Cannock, WS11 5DDRecommendation: send a questionnaire
Royal Mail vs. ONS Address CheckNon-Residential vs. ResidentialFlats above shops, Complex addresses
221 Cannock Road, Cannock, WS11 5DDRecommendation: send a questionnaire
Communal Establishments
• Strong prioritisationPopulationIndividual size of units (so local relevance)Target populations (hard to count)
• Split of typesComplex – Universities, prisons (100% field)Standard – Hospitals, hostels etc (100% field)Simple – Hotels, B&Bs care homes (phone)
• Targeted field check• Used local input / QA
Communals
• New approach to Census • Building the address register
• Matching several datasets• Targeted checking in field• Use of evidence base and rules
• Communal establishments• Dealt with separately• Students done differently
• Result – considered highly successful• Hit targets for over and under coverage
Summary