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Table 1 Declared start of ILI epidemic in 2008 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

1/24

1/24

1/21

1/21

1/21*

1/21

1/21

1/21

1/21

1/27

1/27

1

.5

2/02

1/31

1/27

1/28

1/21*

1/21

1/29

1/28

1/27

1/28

1/28

1

.8

2/02

2/02

1/27

1/29

1/21*

1/21

1/30

1/29

1/27

1/29

1/29

2

.2

1/29

1/29

1/26

1/27

1/26

1/21

1/28

1/27

1/27

1/27

1/27

2

.5

2/02

1/31

1/27

1/28

1/27

1/24

1/29

1/28

1/27

1/28

1/28

2

.8

2/02

2/02

1/27

1/29

1/27

1/25

2/02

1/29

1/27

2/02

1/29

3

.2

1/29

1/29

1/26

1/27

1/26

1/24

1/28

1/27

1/27

1/27

1/27

3

.5

2/02

1/31

1/27

1/28

1/27

1/24

1/29

1/28

1/27

1/28

1/28

3

.8

2/02

2/02

1/27

1/29

1/27

1/25

2/02

1/29

1/27

2/02

2/02

  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.