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Table 2 The clusters of malaria cases detected using the purely spatial analysis

From: Spatio-temporal analysis of malaria incidence at the village level in a malaria-endemic area in Hainan, China

  

Cluster

Obsa

Expb

Relative risk

LLRc

P

Year

 

Latitude(N)

Longitude(E)

Radius(Km)

     

2005

A

18.64666

110.10916

4.72

176

47.36

6.50

134.99

0.00

 

B

18.96730

110.26496

0

31

5.48

6.11

29.17

0.00

2006

A

18.64666

110.10916

4.72

161

41.41

7.14

131.70

0.00

 

B

18.96730

110.26496

0

34

4.84

7.79

38.60

0.00

2007

A

18.67405

110.14340

25.11

167

86.37

11.68

81.34

0.00

2008

A

18.69753

110.17359

15.18

71

26.41

14.67

53.24

0.00

2009

A

18.64666

110.10916

8.37

18

4.94

11.59

16.35

0.00

  1. a: The number of observed cases in a cluster; b: The number of expected cases in a cluster;
  2. c:Log likelihood ratio; A: Most likely cluster; B: Secondary cluster.