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. Author manuscript; available in PMC: 2013 Mar 4.
Published in final edited form as: MMWR Suppl. 2005 Aug 26;54:85–91.

TABLE 1.

Mean day of detection relative to public health response for a false alarm rate of 4 per year, by algorithm and outbreak size

Outbreak size DSMA* ARIMA (1,0,1) EWMA§ 0.05 EWMA 0.20 CUSUM-
EWMA 0.05
CUSUM-
EWMA 0.20
0.10% −16.19 −15.4 −13.4 −6.11 −13.48 −11.43
0.50% −17.81 −15.44 −13.45 −6.32 −13.52 −11.78
1.00% −20.66 −16 −13.57 −6.33 −16.19 −12.45
5.00% −24.76 −23.14 −22.89 −17.52 −23.41 −22.66
10.00% −26.22 −24.74 −24.67 −22.2 −24.67 −24.18
*

Day-specific moving average.

Autoregressive integrated moving average.

§

Exponentially weighted moving average.

Cumulative sum.