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Residential ethnic segregation for age cohorts in England and Wales, 1991-2001

Residential ethnic segregation for age cohorts in England and Wales, 1991-2001 albert.sabater@manchester.ac.uk Centre for Census and Survey Research (CCSR) BURISA/UPTAP joint workshop City Hall, London, 26 September 2008 Understanding Population Trends and Processes. Background.

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Residential ethnic segregation for age cohorts in England and Wales, 1991-2001

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  1. Residential ethnic segregation for age cohorts in England and Wales, 1991-2001 albert.sabater@manchester.ac.uk Centre for Census and Survey Research (CCSR) BURISA/UPTAP joint workshop City Hall, London, 26 September 2008 Understanding Population Trends and Processes

  2. Background • Extensive literature on segregation, also in relationship with employment, education, … (Burgess, 1928; Massey and Denton, 1988; Danzinger and Holzer, 2000; Orfield, 2001; Bullard, 1983; ...) • Also segregation and the demographic processes following immigration (Peach, 1996; Finney and Simpson, 2008; Domingo and Bayona, 2007) • Residential segregation across life-stages?

  3. Objective • Analyse the change in ethnic residential segregation across life-stages (represented by age cohorts)

  4. Research questions • Is segregation greater at some life-stages than at other? • Does the life-pattern of segregation differ between ethnic groups?

  5. 100 High 0 Low A common measure • Index of Dissimilarity (ID) (an uneven geographical spread)

  6. Data • Complete mid-91 and mid-01 population estimates for small areas, including adjustments for: • Population definition (1991 students at term-time) • Non-response not included in census output • Consistent individual ages (for all ethnic groups) • Harmonisation of geographical units www.ccsr.ac.uk/research/PopulationEstimates.htm

  7. Segregation by age cohorts England and Wales (across wards)

  8. Change in segregation (ID): 0-6 in 1991 and ten years laterLondon Boroughs (across wards) Black Caribbean Black African Lewisham: 12.2 (1991) to 15.0 (2001) Sutton: 20.9 (1991) to 24.7 (2001) Croydon: 36.3 (1991) to 37.6 (2001) Waltham Forest: 18.3 (1991) to 19.9 (2001) Islington: 10.0 (1991) to 12.2 (2001) Newham: 14.6 (1991) to 18.7 (2001)

  9. 1991 2001 0-6 10-16 ... ... 27-36 17-26 ... ... 57-66 47-56 ... ... Segregation by age cohorts

  10. Change in segregation (ID) across life-stages, 1991-2001England and Wales (across wards) Phase 1 Phase 2 Phase 3

  11. Change in segregation (ID) across life-stages, 1991-2001England and Wales (across districts)

  12. Limitations • Results can be affected by differential mortality and international migration (perhaps the latter much more important) • Such effects can be particularly hard to disentagle in local areas (with people moving in or out of the area)

  13. Advantages • Useful to highlight that segregation is generally greater during the middle adulthood phase • Useful to observe how the life-pattern of segregation does not differ significantly between ethnic groups

  14. Conclusions The use of segregation measures (eg Index of Dissimilarity) with an age cohort dimension can be used as a new window to look at residential patterns of ethnic segregation The approach can be further refined and used in a wider context: -Settlement and distribution patterns of different groups over time/space -Population movement at different life-stages, age migration schedules - ...

  15. More information Data www.ccsr.ac.uk/research/PopulationEstimates.htm Project www.ccsr.ac.uk/staff/asabater.htm

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