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IPUMS i integration principles. 1. Respect absolute anonymity and confidentiality 2. Preserve all original data, except adjustments to insure privacy (top codes, blurrings, masking, re-ordering, etc.)
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IPUMSi integration principles • 1. Respect absolute anonymity and confidentiality • 2. Preserve all original data, except adjustments to insure privacy (top codes, blurrings, masking, re-ordering, etc.) • 3. Harmonize codes using international standardsoccupation: ISCO-88 (detailed, general)education: ISCED “ “family: IPUMS, etc. “ “ • 4. Enhance with constructed variables hist.umn.edu/~rmccaa/ipums-europe
Composite coding scheme example:marital status hist.umn.edu/~rmccaa/ipums-europe
Occupation: the ISCO standard, preliminary release: “1” digitfinal: 2-3 or 4 digit, depending upon country hist.umn.edu/~rmccaa/ipums-europe
Variable availability, preliminary release hist.umn.edu/~rmccaa/ipums-europe
IPUMSi Web-based extraction system DISSEMINATES Legally-binding license agreement • protects privacy and confidentiality • assures proper use • new sanction: loss of employment. Researcher selects • countries • censuses • cases/sub-populations • variables • sample densities • Facilitates comparative research hist.umn.edu/~rmccaa/ipums-europe