Table 5

Results of three timeliness methods for the identification of the start of the autumn/winter wave of the A (H1N1) influenza pandemic (as reported by the reference data) with syndromic surveillance data in 2009
Data source Peak comparison Cross-correlation function First aberration detected by Poisson CUSUM
(weeks) (weeks) (days)
Without reporting delay+ With reporting delay+
EMD-AT na* not significant 0 -6
EP-AT na* not significant na* na*
EP-BE -1 -1 +10 +2
0.60
ED-BE -1 not significant 0 -8
ED-ES +1 +1 +19 (period 1) +11 (period 1)
0.89 0 (period 2) -8 (period 2)

*na = not applicable.

+reporting delay refers to the time needed for collecting and processing the data.

Rosenkötter et al.

Rosenkötter et al. BMC Public Health 2013 13:905   doi:10.1186/1471-2458-13-905

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