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Table 1 Spatial irregular clusters of annual measles incidence between 2004 and 2014

From: Spatial, temporal and spatio-temporal clusters of measles incidence at the county level in Guangxi, China during 2004–2014: flexibly shaped scan statistics

Year

Type of cluster

No. of counties in cluster

Radius (km)

LLR

RR

P-value*

2004

Most likely cluster

2

39.17

114.21

7.12

0.001

Secondary cluster 1

8

164.99

104.56

2.76

0.001

Secondary cluster 2

6

187.76

38.18

2.06

0.001

Secondary cluster 3

4

113.48

26.68

1.75

0.001

Secondary cluster 4

3

81.03

24.37

2.66

0.001

2005

Most likely cluster

4

26.18

381.42

7.24

0.001

Secondary cluster 1

4

117.62

355.75

6.41

0.001

Secondary cluster 2

1

0.00a

85.96

5.30

0.001

Secondary cluster 3

2

61.69

35.73

2.38

0.001

Secondary cluster 4

2

64.71

28.58

2.88

0.001

Secondary cluster 5

2

53.88

9.99

2.56

0.033

2006

Most likely cluster

6

100.54

191.49

7.03

0.001

Secondary cluster 1

6

132.81

137.54

3.99

0.001

Secondary cluster 2

2

12.85

91.45

8.48

0.001

Secondary cluster 3

5

179.29

11.43

1.93

0.005

2007

Most likely cluster

1

0.00a

1107.94

33.01

0.001

Secondary cluster 1

3

87.64

25.58

2.91

0.001

Secondary cluster 2

2

32.53

23.32

2.60

0.001

Secondary cluster 3

1

0.00a

22.49

2.64

0.001

Secondary cluster 4

4

14.26

9.88

2.27

0.046

2008

Most likely cluster

4

59.44

207.67

5.14

0.001

Secondary cluster 1

4

14.26

96.97

5.97

0.001

Secondary cluster 2

1

0.00a

87.52

4.93

0.001

Secondary cluster 3

4

153.81

19.88

2.52

0.001

Secondary cluster 4

1

0.00a

12.49

2.56

0.002

Secondary cluster 5

1

0.00a

10.57

4.64

0.018

Secondary cluster 6

1

0.00a

9.62

4.93

0.050

2009

Most likely cluster

1

0.00a

66.28

33.23

0.001

Secondary cluster 1

5

136.07

20.64

4.62

0.001

2010

Most likely cluster

1

0.00a

15.51

53.67

0.002

2011

Most likely cluster

6

92.81

28.95

18.03

0.001

2012

Most likely cluster

1

0.00a

42.68

56.51

0.001

2013

Most likely cluster

1

0.00a

1924.26

81.45

0.001

Secondary cluster 1

8

205.23

163.35

4.14

0.001

Secondary cluster 2

2

49.60

18.22

2.48

0.001

Secondary cluster 3

1

0.00a

13.63

2.07

0.001

2014

Most likely cluster

8

127.25

2006.30

5.88

0.001

Secondary cluster 1

3

71.96

431.92

7.04

0.001

Secondary cluster 2

5

153.81

24.99

1.88

0.001

  1. *Tango’s flexible scan statistics
  2. aZero-radius means only one county in the cluster