Scotland's 2011 Census
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Scotland’s 2011 Census RGS-IBG International conference London Cecilia Macintyre, 27 August 2014 Overview Some history Processes to get to the final data set Some of the key results so far Results still to come Census Data Explorer History Census day - 27 March 2011 23rd census since 1801 Lots of planning and preparatory activity “Traditional” census approach: 95% of census questionnaires hand-delivered, 5% by post 94% response rate - 20% questionnaires completed online From 94% to 100%... Load & Remove False Capture data Validation persons Resolve Multiple Filter Rules Imputation Responses Estimate Impute skeleton Assign output missing returns records areas Derive variables Disclosure Outputs for output Control database Dual system estimation Census population: 5,295,403, estimated with 95 per cent confidence to be accurate to within +/- 23,000 (0.44 per cent). See scotlandscensus website for more detail on methodology Quality assurance process Carried out agreed series of simple univariate checks at early stages. Benefits of early sight of data was that feedback could be provided to processing team Developed systems and tools to be used throughout process and for dissemination of quality information What did we find? Processing had missed out some variables – back to the beginning What we expected - respondents don’t do what you always expect Initial findings raised issues with coding and ways in which some questions were answered What did we do about it? Carried out more in-depth checks , prioritising key data used in first release Analysed data for issues which would cause problems in later processes, in particular edit and imputation Recoded some text responses including ethnic group and language Sometimes nothing – but will report quality to users Some issues identified Issues with specific questions • Marital status • Travel to school (and students in general) • Central heating and long term conditions write in Geography issues • Best fit geography for datazones • Treatment of potentially disclosive slivers Address coding • Workplace flows (ongoing) Example 2001 Data zones can be created by either aggregating up: • 2011 postcodes • 2011 output areas. 2 versions of data zone creation 2011 Postcodes 2011 Output areas Geographic differences 1686 2436 700 1393 2011 Postcodes 2011 Output areas Data zone boundary S01001102 S01001109 Uses of data zone population statistics If you are looking to do a comparison of population or number of households over the years, the data set created from 2011 postcodes would be your best option. However, for all future releases of the census data zone estimates will be of those aggregated from 2011 Output areas. Data zone boundaries are currently being reviewed Additional data published 2001 Data zones: Population and Household Estimates – Comparison between 2001 and 2011 Censuses http://www.gro-scotland.gov.uk/statistics/theme/population/estimates/special-area/sape/2001- data-zones.html Some issues to be aware of The total population of datazones in a council area does not exactly match the published council area population Difference in council population Glasgow/North Lanarkshire 617 East Ayrshire/East Renfrewshire 127 Aberdeen City/Aberdeenshire 102 Geography – Output areas 46,351 output areas created for 2011 Created as groups of postcodes Minimum thresholds 50 persons and 20 households First release of results December 2012 Media coverage “Edinburgh in baby boom as under- fives up 18%” Edinburgh Evening News “What we learned from the Census 2011: More women, more OAPs, more people.” BBC online The Daily Record “Scotland becomes ‘a “Almost two thirds of “Home alone: how single- more colourful country’” Scotland's residents are person households now 'Scottish only' ” STV prevail across Scotland” BBC online Herald online “Census shows decline in Gaelic speakers 'slowed' ” “Challenge to the Kirk as number of Scots without a BBC religion at new high” “Number of foreign nationals in Aberdeen triples” The Herald Evening Express Scotland’s population More people: Scotland’s population was 5.3 million on 27 March 2011, the highestScotland’s ever Census Population grew by over 0.2 million (4.6 per cent) since 2001 An ageing populationRelease: 2A 17 per cent of population aged 65 and over (including 34,000 people aged 90 or over) 16 per cent of population aged under 15 (under 5s up) New question - National identity Proportion of population by national identity, Scotland, 2011 Ethnicity by National Identity Ethnicity and country of birth Language other than English spoken at home Scots Polish Gaelic Urdu Punjabi Chinese French British Sign Language German Spanish Arabic Italian Cantonese Russian Hindi 0 10,000 20,000 30,000 40,000 50,000 60,000 Number of people aged 3 and over Gaelic speakers by Scottish Parliamentary Constituency Na h-Eileanan an Iar has 14,092 speakers Skye, Lochaber and Badenoch has 6,385 speakers Glasgow Kelvin has 1,419 speakers Long term health condition No condition One or more conditions Other condition Physical disability Deafness or partial hearing loss Mental health condition Blindness or partial sight loss Learning difficulty Developmental disorder Learning disability 0 500000 1000000 1500000 2000000 2500000 3000000 3500000 4000000 Number of people Results still to come Release 3 – remaining multi-variate tables on tenure and housing Origin-destination statistics Census microdata files (Samples of Anonymised Records) Alternative population statistics, eg workplace population Commissioned tables service Analytical reports Capturing the uses and benefits Activity throughout 2014 to answer questions such as: What are you using the data for? How do you intend to use the data? What can NRS do to ensure you get the most out of it? What is in the way of your making best use? Feeds Benefits Realisation for Census 2011 and also looking ahead to Beyond 2011 and the future of census statistics. Census Data Explorer Quick, easy (and FREE!) online access to the results from Scotland’s 2011 Census All the standard output tables for all the available geographies Area profiles Data visualisations and maps online Range of supporting information Questions/ further information All data available at: www.scotlandscensus.gov.uk Also sign up there for our e-newsletter Follow us on Twitter: @NatRecordsScot Enquiries: [email protected] Do it all again in 2021? Thank you Area profiles “Data tourist”, eg community groups, teachers, local residents “Snapshot” profiles of census results for a chosen area Can choose another area to compare against (Scotland comparisons always available) .