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© 1981 Oxford University Press

research-article

A Generalised Scan Statistic Test for the Detection of Clusters

MARTIN A WEINSTOCK*

*Gertrude H Sergievsky Center, Columbia University 630 West 168th Street, New York, New York 10032, USA

Weinstock MA [Gertrude H Sergievaky Center, Columbia University, 630 West 168th Street, New York, New York 10032, USA] A generalised scan statistic test for the detection of clusters. Internationally Journal of Epidemiology 1981, 10: 289–293.

The scan statistic can be used for the testing of clusters of disease in time. However, it is not valid in situations in which there is some change in the population at risk or in the detection rate of the disorder. Furthermore, it cannot distinguish between a cluster due to the changing pattern of known risk castors for the disease and one due to other causes. A generalised scan statistic is proposed which overcomes these limitations. Its use is illustrated with previously published birth defects date.

Received 17 March 1981


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