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Access to Microdata. Felix Ritchie Business Data Linking. ONS’ approach to microdata. More confidential, more secure. Special licence. No release. Virtual microdata laboratory. UKDA. Web. Business data, Census data. Census, health data. Aggregate data. Not anonymised. GHS.
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Access to Microdata Felix Ritchie Business Data Linking
ONS’ approach to microdata More confidential, more secure Special licence No release Virtual microdata laboratory UKDA Web Business data, Census data Census, health data Aggregate data Not anonymised GHS Less confidential, easier access
E-procurement in Manufacturing Businesses VA/ employee (£) Source, ONS 2000 ABI
Company minimum wage Figure 7: Company minimum wage for all companies
Lots of data to share... • Annual Respondents Database 73-04 • production 73-04 construction 93-04 services 97-04 • NES 86-03 & NESPD 75-03, ASHE 1997-2005 • Annual Inquiry into FDI 96-02 • eCommerce Survey 2000-4 • Annual and Quarterly Investment surveys 98-02 • Business Expenditure on R&D et cetera... • plus OGD surveys • ESS, LTW, CIS. WERS financial and WERS/ARD
…but the downside: • access limited to ONS sites • datasets large, unwieldy, complex, inconsistent • delays in developing documentation
Research Use of Disclosive Data • Purpose of the research • Statistical and not administrative • For “ONS benefit” • Limits on data use • Restricted access outside ONS • Disclosure control of all results before release off-site • Benefits of use • Gets more out of existing data sources for • ONS - research and quality improvement • Government – increasing importance for evidence-based policy making • Academia/NGOs – fulfilling ONS’ public service remit
Four (plus one) safety levels • safe projects • safe people • (safe data) • safe settings • safe kit • safe places • safe outputs protection against deliberate disclosure protection against accidental disclosure
safe projects • statistical not administrative use • for “ONS Benefit” • no private benefit • no conflict of interest
safe people • Civil servants covered by a Ministerial Direction • Academics employed by an approved institution • universities • research institutes • In principle: PhD students • Under trial: • private profit-making companies • Foreign researchers • Not at all: private individuals building precedents
safe settings - the BDL virtual data lab Secure lab Researcher BDL staff Data read only work area read-write Logs in to server only screen shots, no data Direct access to server Output Input automatic transfer archiving of all transfers Input Output
Safe outputs – disclosure control • All on-site researchers required to undergo training programme • 30 minutes legal background • 10 minutes lab use • 80 minutes SDC • 12-page SDC- Rules Explained • All under continuous development • Internal sources – improving our responsiveness • External sources – new issues arising
Part II ONS datasets
Data structure enterprise local unit Enterprise group local unit reporting unit local unit local unit
Sampling structure Firm structure Sampling structure
contact details The BDL team: Address: Business Data Linking Office for National Statistics 1 Drummond Gate London SW1V 1QQ 0207 533 5975/5286 bdl@ons.gov.uk Newport: Felix Ritchie London: Gian Fazio Emma Edworthy Katherine Lam Joseph Robjohns