Presentation on theme: "Requirements for 2011 Cross-sectional Microdata SARs Support Team University of Manchester"— Presentation transcript:
Requirements for 2011 Cross-sectional Microdata SARs Support Team University of Manchester http://www.ccsr.ac.uk/sars
1991 Census microdata FileSample type GeographyAvailability 1991 Individual SAR 2% sample of individuals GB and NI available Separately. Divided into a total of 288 SAR Areas. Online registration and access via CCSR. Data can be downloaded in SPSS, tab or Stata. Nesstar tool available for online data exploration. 1991 Household SAR 1% sample of households GB and NI available Separately. Regional geography.
The SARs family 2001 FileSample typeGeographyAvailability Individual Licensed SAR 3% sample of individuals UK: GOR (+ Wales, Scot, NI, Inner/Outer London) EUL CCSR Small Area Microdata 5% sample of individuals UK: LA (or constituency in NI) EUL CCSR Special Licence Household SAR 1% hierarchical file None: England and Wales only Special Licence UKDA Individual CAMS Same sample as Individual Licensed SAR LA (GB) or Constituency (NI) IMD info for SOA In house at ONS Household CAMS 1% hierarchical file All of UKIn house at ONS
Key features Coverage Size Ethnicity and religion Geography Multivariate Household structure Comparability with other census products Easy access
Thinking ahead to 2001 What will be possible? Flexible outputs? Secure settings? Larger data handling capabilities? Different disclosure constraints?... Need to fix a starting point as soon as possible Balance diverse user needs and disclosure control and production/maintenance costs No single solution - portfolio of products
Key considerations Safe setting or safe data (or other access arrangements) Varied user requirements Expert users versus general users Geographical detail versus variable detail versus sample size Set-up and maintenance costs
Possible portfolio Data in secure setting (CAMS) –100% population data (with sub-setting)? –Flexible tabulation and/or multivariate analysis –Download facility/bespoke samples? –Confidentiality checks –Widen number of locations Special Licence files –SL Household SAR (with large households) –SL Individual SAR (with LAD geography) –Special topic samples (e.g. employment) General purpose files –Safe data (EUL) with less detail –Available publicly and to overseas researchers