1. Harmonizing the World’s Census Microdata: The IPUMS Project Matt Sobek Minnesota Population Center sobek@pop.umn.edu

2. What is IPUMS-International? Census data – 1960 to present Samples – 1 to 10%, nationally representative Microdata – individual-level Extract system – select variables – pooled data Downloadable – anonymized Integrated – consistent codes across time and place

3. Map of IPUMS Partners Dark green = disseminating data Light green = partners, not yet disseminating 83 countries

4. Current Countries in IPUMS 44 countries 130 samples 279 million persons Egypt Ghana Guinea Kenya Rwanda South Africa Uganda Armenia Cambodia China India Iraq Israel Jordan Kyrgyz Rep. Malaysia Mongolia Palestine Philippines Vietnam Argentina Bolivia Brazil Canada Chile Colombia Costa Rica Ecuador Mexico Panama United States Venezuela Austria Belarus France Greece Hungary Italy Netherlands Portugal Romania Slovenia Spain United Kingdom Africa Asia Americas Europe

5. IPUMS Microdata Relation to head Marital status Literacy Occupation

6. Aggregate Data

7. Data Standardization

8. Data Integration – Marital Status China 1982 Colombia 1973 Kenya 1989 Mexico 1970 U.S.A. 1990

9. XML Harmonization Table

10. Census Questionnaire (Mexico 2000) Water Access

11. Text of Census Questionnaire (Mexico 2000)

12. Water access XML-Tagged Census Questionnaire (Mexico 2000)

13. Variable Description (Literacy)

14. Availability of Selected Person Variables (Number of samples)

15. Availability of Selected Household Variables (Number of samples)

16. Number of Geographic Units Identified

17. Size of Geographic Units by Country (Median population in 000s)

18. Urban Definitions (N of countries) (Functional criteria include infrastructure, businesses, agriculture, etc.)

19. National Stats Office Questionnaire Data collection Data processing Aggregate statistics Tabulator Public samples Full microdata Samples drawn Public samples IPUMS samples Harmonization Aggregate statistics IPUMS Sampling Donation Confidentiality

20. END http://international.ipums.org Matt Sobek Minnesota Population Center sobek@pop.umn.edu