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Table 2 Declared start of ILI epidemic in 2009 for each region, under various decision rules

From: A Bayesian spatio–temporal approach for real–time detection of disease outbreaks: a case study

Decision rule

Declared start of epidemic in region

DaysN

Thresholdϖ

1

2

3

4

5

6

7

8

9

10

11

1

.2

8/17

8/17

8/16

8/17

8/16

8/16

8/16

8/16

8/16

8/16*

8/16

1

.5

8/23

8/23

8/17

8/17

8/16

8/17

8/17

8/17

8/17

8/17*

8/17

1

.8

8/23

8/23

8/23

8/22

8/17

8/22

8/21

8/18

8/22

8/22

8/18

2

.2

8/21

8/21

8/16

8/17

8/16

8/16

8/16

8/16

8/16

8/16*

8/16

2

.5

8/23

8/23

8/21

8/17

8/16

8/17

8/17

8/17

8/17

8/17*

8/17

2

.8

8/30

8/27

8/23

8/22

8/17

8/22

8/21

8/18

8/22

8/22

8/18

3

.2

8/21

8/21

8/16

8/17

8/16

8/16

8/16

8/16

8/16

8/16*

8/16

3

.5

8/23

8/23

8/21

8/21

8/16

8/17

8/17

8/17

8/20

8/17*

8/17

3

.8

8/30

8/30

8/23

8/22

8/17

8/22

8/21

8/18

8/22

8/22

8/18

  1. The epidemic is declared when P(δ(t) = 1Y 1:t ) exceeds the threshold ϖ for N consecutive days. “*” represents a case of potential false alarm.