© Oxford University Press, 1992. All rights reserved. This chapter describes a geographical correlation study involving age-standardized mortality rates from almost 100 separate causes or groups of causes in sixty-five rural counties in China, plus a representative survey of almost 300 characteristics of the populations in each of these counties. The study may be used either directly or indirectly for medical research. This study's direct value is as a source of correlations between diseases, between diseases and factors that might affect those diseases, or between one factor or another. Its indirect value is as a source of statistical information that can be used to develop an overall description of some recent large developments in preventive medicine in China.

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Geographical and Environmental Epidemiology: Methods for Small Area Studies

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