• The Korean Journal of Applied Statistics
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• v.20 no.3
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• pp.597-604
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• 2007

There are many uses of control charts in health-care monitoring and in public-health surveillance. For example, control charts are used in monitoring and improvement of hospital performance, in monitoring chronic diseases and infectious diseases, and so on. We introduce the Variable Life-Adjusted Display (VLAD) chart and propose the method for choosing control limits of the VLAD chart to give specified in-control properties.