Interpolation between spatial frameworks: an application of process convolution to estimating neighbourhood disease prevalence

Statistical Methods in Medical Research
Peter Congdon

Abstract

Health data may be collected across one spatial framework (e.g. health provider agencies), but contrasts in health over another spatial framework (neighbourhoods) may be of policy interest. In the UK, population prevalence totals for chronic diseases are provided for populations served by general practitioner practices, but not for neighbourhoods (small areas of circa 1500 people), raising the question whether data for one framework can be used to provide spatially interpolated estimates of disease prevalence for the other. A discrete process convolution is applied to this end and has advantages when there are a relatively large number of area units in one or other framework. Additionally, the interpolation is modified to take account of the observed neighbourhood indicators (e.g. hospitalisation rates) of neighbourhood disease prevalence. These are reflective indicators of neighbourhood prevalence viewed as a latent construct. An illustrative application is to prevalence of psychosis in northeast London, containing 190 general practitioner practices and 562 neighbourhoods, including an assessment of sensitivity to kernel choice (e.g. normal vs exponential). This application illustrates how a zero-inflated Poisson can be used a...Continue Reading

References

Apr 30, 2003·Statistics in Medicine·E C Marshall, D J Spiegelhalter
Jul 19, 2003·BMJ : British Medical Journal·Philip C Calder
Oct 15, 2003·Biostatistics·Fujun Wang, Melanie M Wall
Nov 2, 2005·The British Journal of Psychiatry : the Journal of Mental Science·Judith AllardyceR G McCreadie
Jul 20, 2006·Schizophrenia Bulletin·Judith Allardyce, Jane Boydell

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Citations

Oct 17, 2013·International Journal of Environmental Research and Public Health·Peter Congdon

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