Identifying Change Over Time in Small Area Socio-Economic Deprivation
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The measurement of area level deprivation is the subject of a wide and ongoing debate regarding the appropriateness of the geographical scale of analysis, the input indicator variables and the method used to combine them into a single figure index. Whilst differences exist, there are strong correlations between schemes. Many policy-related and academic studies use deprivation scores calculated cross-sectionally to identify areas in need of regeneration and to explain variations in health outcomes. It would be useful then to identify whether small areas have changed their level of deprivation over time and thereby be able to: monitor the effect of industry closure; assess the impact of area-based planning initiatives; or determine whether a change in the level of deprivation leads to a change in health. However, the changing relationship with an outcome cannot be judged if the ‘before’ and ‘after’ situations are based on deprivation measures which use different, often time-point specific variables, methods and geographies. Here, for the whole of the UK, inputs to the Townsend index obtained from the 1991 and 2001 Censuses have been harmonised in terms of variable detail and with the 1991 data converted to the 2001 Census ward geography. Deprivation has been calculated so that the 1991 scores are directly comparable with those for 2001. Change over time can be then identified. Measured in this way, deprivation is generally shown to have eased due to downward trends in levels of lack of access to a car, non-home ownership, household overcrowding but most particularly, to reductions in levels of unemployment. Despite these trends, not all locations became less deprived with gradients of deprivation largely persisting within the UK’s constituent countries and in different area types. For England, Wales and Scotland, the calculation of Townsend scores can readily be backdated to incorporate data from the 1971 and 1981 Censuses to create a 1971–2001 set of comparable deprivation scores. The approach can also be applied to the Carstairs index. Due to differences in data availability prior to 1991, incorporating small areas in Northern Ireland would be challenging.
KeywordsTownsend & Carstairs deprivation index Census Change over time Small geographical areas & wards UK
This research uses Census data, the National Statistics Postcode Directory and GIS boundary data obtained via MIMAS CASWEB and EDINA UKBORDERS which are academic services supported by ESRC and JISC. The Census and National Statistics Postcode Directory for England & Wales, Scotland and Northern Ireland have been provided by the Office for National Statistics, General Register Office for Scotland and the Northern Ireland Statistics and Research Agency and the digital boundary data by Ordnance Survey. These data are copyright of the Crown and are reproduced with permission of the Controller of HMSO. Paul Norman’s research is funded by the ESRC’s Understanding Population Trends and Processes initiative (RES-163-25-0012). The author is grateful for the constructive comments from two referees which were very useful.
- Bailey, S., Charlton, J., Dollamore, G., & Fitzpatrick, J. (1999). The ONS classification of local and health authorities of Great Britain: revised for authorities in 1999. Studies in Medical and Population Subjects No. 63. London: HMSO.Google Scholar
- Bates, A. (2008). The development of a postcode best fit methodology for producing population estimates for different geographies. Population Trends, 133, 28–34.Google Scholar
- Blackman, T. (2006). Placing health. Neighbourhood renewal, health improvement and complexity. Bristol: The Policy.Google Scholar
- Burrows, R., & Bradshaw, J. (2001). Evidence-based policy and practice. Environment & Planning A, 33, 1345–1348.Google Scholar
- Burrows, R., & Rhodes, D. (1998). Unpopular places? Area disadvantage and the geography of misery in England. Bristol: The Policy.Google Scholar
- Dale, A. (1993). The content of the 1991 Census: change and continuity. In A. Dale & C. Marsh (Eds.), The 1991 census user’s guide (pp. 16–51). London: HMSO.Google Scholar
- DoE. (Department of the Environment). (1983). Urban deprivation: Information note 2, inner cities directorate. Department of the Environment: London.Google Scholar
- DoE. (Department of the Environment). (1994). A 1991 index of local conditions. Department of the Environment: London.Google Scholar
- Dorling, D. (1996). Be cheerful, strive to be happy identifying disadvantaged areas: health, wealth and happiness. Radical Statistics, 62, 8–21.Google Scholar
- Dorling, D. (1999). Who’s afraid of income inequality? Environment & Planning A, 31, 571–4.Google Scholar
- Dorling, D., Rigby, J., Wheeler, B., Ballas, D., Thomas, B., Fahmy, E., et al. (2007). Poverty, wealth and place in Britain, 1968 to 2005. Joseph Rowntree Foundation / The Policy: Bristol.Google Scholar
- Exeter, D. & Boyle, P. (2009). Premature mortality has risen in persistently deprived Scottish areas, Paper presented at Global Health: Changing Environments, Changing Health, XIIIth International Symposium in Medical Geography, Hamilton, Canada, July 12–17.Google Scholar
- Green, A. (1999). Problems of measuring participation in the labour market. In D. Dorling & S. Simpson (Eds.), Statistics in society: The arithmetic of politics (pp. 313–323). London: Arnold.Google Scholar
- Haining, R., Wise, S., & Blake, M. (1994). Constructing regions for small area analysis: material deprivation and colorectal cancer. Journal of Public Health Medicine, 16(4), 429–438.Google Scholar
- Haynes, R., Gale, S., Lovett, A., & Bentham, G. (1996). Unemployment rate as an updatable health needs indicator for small areas. Journal of Public Health Medicine, 18(1), 27–32.Google Scholar
- Heady, P., Smith, S., & Avery, V. (1994). 1991 census validation survey: Coverage report. Office for Population and Censuses. London: HMSO.Google Scholar
- Hoare, J. (2003). Comparison of area-based inequality measures and disease morbidity in England, 1994–1998. Health Statistics Quarterly, 18, 18–24.Google Scholar
- IMD. (2004). The English Indices of Deprivation 2004. Office of the Deputy Prime Minister. Online via http://www.odpm.gov.uk/stellent/groups/odpm_control/documents.
- Mackenzie, I. F., Nelder, R., Maconachie, M., & Radford, G. (1998). My ward is more deprived than yours. Journal of Public Health Medicine, 20, 186–90.Google Scholar
- Marsh, C. (1993). An overview. In A. Dale & C. Marsh (Eds.), The 1991 census user’s guide (pp. 1–15). London: HMSO.Google Scholar
- MIMAS. (1999). Derived Data from the 1991 Area Statistics. Online http://census.ac.uk/cdu/Datasets/1991_Census_datasets/Area_Stats/Derived_data/.
- Morris, R., & Carstairs, V. (1991). Which deprivation? A comparison of selected deprivation indexes. Journal of Public Health Medicine, 13(4), 318–326.Google Scholar
- Nevin, B., Loftman, P., & Beasley, M. (1997). Cities in crisis: is growth the answer? An analysis of the outcome of the first and second rounds of the Single Regeneration Budget. Town Planning Review, 68(2), 145–164.Google Scholar
- Noble, M., Penhale, B., Smith, G., Wright, G., Dibben, C., Owen, T., et al. (2000). Measuring multiple deprivation at the small area level: The indices of deprivation 2000. DETR: London.Google Scholar
- Norman, P. (2006). Sociodemographic spatial change in the UK: data and computational issues and solutions. GIS Development special issue Maps and Census, 10(12), 30–34.Google Scholar
- Norman, P., Gregory, I., Dorling, D., & Baker, A. (2008a). Geographical trends in infant mortality: England and Wales, 1970–2006. Health Statistics Quarterly, 40, 18–29.Google Scholar
- ONS. (2004). The national statistics socio-economic classification. Online: http://www.ons.gov.uk/about-statistics/classifications/current/ns-sec/index.html.
- Openshaw, S., & Taylor, P. J. (1981). The modifiable areal unit problem. In N. Wrigley & R. J. Bennett (Eds.), Quantitative geography: A British view (pp. 335–50). London: Routledge and Kegan Paul.Google Scholar
- Park, R. E., Burgess, E. W., & McKenzie, R. D. (1925). The city. University of Chicago Press: Chicago.Google Scholar
- Rees, P., Parsons, J., & Norman, P. (2005). Making an estimate of the number of people and households for Output Areas in the 2001 Census. Population Trends Winter, 2005(122), 27–34.Google Scholar
- Robinson, G. (1998). Methods and techniques in human geography. Wiley: Chichester.Google Scholar
- Rothman, J. (1989). Editorial. Journal of the Market Research Society, 31(1), 1–7.Google Scholar
- Senior, M. L. (2002). Deprivation indicators. In P. Rees, D. Martin & P. Williamson (Eds.), The census data system (pp. 123–137). Chichester: Wiley.Google Scholar
- Shevky, E., & Bell, W. (1955). Social area analysis. Stanford: University of California Press.Google Scholar
- Shevky, E., & Williams, M. (1949). The social areas of Los Angeles: Analysis and typology. University of California Press: Berkeley.Google Scholar
- Shuttleworth, I. & Lloyd, C. D. (2007). Linking northern Ireland census of population data, 1971–2001. Economic and Social Research Council Grant Number: RES-000-23-0478. Available online via UK Data Archive Study Number 5672: http://www.data-archive.ac.uk/.
- Smith, G., Noble, M., & Wright, G. (2001). Do we care about area effects? Environment & Planning A, 33, 1341–1344.Google Scholar
- Stillwell, J. C. H., & Duke-Williams, O. (2006). Census interaction data: the impact of small cell adjustment and problems of verification with 1991. Journal of Royal Statistical Society, Series A, 170(2), 1–21.Google Scholar
- SWRDA. (2008). Single Regeneration Budget (SRB). South West of England Regional Development Agency. Online via: http://www.southwestrda.org.uk/what-we-do/regeneration/srb/index.shtm.
- Tilson, B., Mawson, J., Beazley, M., Burfitt, A., Collinge, C., Hall, S., et al. (1997). Partnerships for regeneration: the single regeneration budget challenge fund round one. Local Government Studies, 23(1), 1–15.Google Scholar
- Townsend, P. (1970). The concept of poverty. Heinemann Educational Books: London.Google Scholar
- Townsend, P. (1979). Poverty in the United Kingdom. A survey of household resources and standards of living. Penguin: Harmondsworth.Google Scholar
- Vickers, D. W., & Rees, P. H. (2006). Introducing the national classification of census output areas. Population Trends, 125, 15–29.Google Scholar
- Wallace, M., & Denham, C. (1996). The ONS classification of local and health authorities of Great Britain. Studies on Medical and Population Subjects No 59. London: HMSO.Google Scholar
- Webber, R., & Craig, J. (1978). Socio-economic classifications of local authority areas. Studies in Medical and Population Subjects No. 35. London: HMSO.Google Scholar
- Webster, D. (2002) Unemployment: how official statistics distort analysis and policy, and why. Radical Statistics 79/80. Online: http://www.radstats.org.uk/no079/index.htm.
- Wilson, W. (1999). The right to buy. House of Commons Research Paper 99/36. Online: http://www.parliament.uk/parliamentary_publications_and_archives/research_papers.cfm.