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Table 5 In-control ARL performance of the standard \(\uplambda\)-CUSUM chart and the risk-adjusted \(\uplambda\)-CUSUM control chart

From: Risk-adjusted zero-inflated Poisson CUSUM charts for monitoring influenza surveillance data

 

Case(a)

Case(b)

Case(c)

 

Standard CUSUM

Risk-adjusted CUSUM

Standard CUSUM

Risk-adjusted CUSUM

Standard CUSUM

Risk-adjusted CUSUM

RR = 1.5

100.2283

398.9045

70.7917

405.22

150.5684

395.6469

RR = 2

103.3361

402.9761

72.7272

395.1574

147.2813

398.4174

  1. The ARL closest to the pre-determined in-control ARL 400 are bolded