Multichart Schemes for Detecting Changes in Disease Incidence
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Updated: Dec 19, 2025

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Published on: December 9, 2015
Gideon Mensah Engmann1,2, Dong Han1
1School of Mathematical Sciences, Shanghai Jiao Tong University, 200240 Shanghai, China.
Abstract:
Several methods have been proposed in open literatures for detecting changes in disease outbreak or incidence. Most of these methods are likelihood-based as well as the direct application of Shewhart, CUSUM and EWMA schemes. We use CUSUM, EWMA and EWMA-CUSUM multi-chart schemes to detect changes in disease incidence. Multi-chart is a combination of several single charts that detects changes in a process and have been shown to have elegant properties in the sense that they are fast in detecting changes in a process as well as being computationally less expensive. Simulation results show that the multi-CUSUM chart is faster than EWMA and EWMA-CUSUM multi-charts in detecting shifts in the rate parameter. A real illustration with health data is used to demonstrate the efficiency of the schemes.
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