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Table 4 Spatial malaria pockets with higher Incidence of Vivax and Falciparum malaria detected by SaTScan v9.4.2 in Ratanakiri, Cambodia

From: Geographical patterns of malaria transmission based on serological markers for falciparum and vivax malaria in Ratanakiri, Cambodia

Plasmodium species

Malaria pockets

Communities (out of 98)

Year

Radius (km)

Population

Observed cases

Expected cases

Relative risk

Log likelihood ratio

p-value

P. falciparum

5

27

2012

19.08

9594

1113

527.11

2.92

335.44

<0.05

1

 

0a

244

57

13.41

4.32

39.27

<0.05

3

 

6.16

699

102

38.40

2.72

36.82

<0.05

1

 

0a

288

44

15.82

2.81

16.97

<0.05

1

 

0a

223

33

12.25

2.71

12.03

<0.05

6

27

2013

19.08

9594

580

257.69

3.26

204.42

<0.05

1

 

0a

450

47

12.09

4.00

29.39

<0.05

2

 

1.50

535

41

14.37

2.91

16.63

<0.05

2

 

2.90

876

55

23.53

2.40

15.62

<0.05

1

 

0a

223

22

5.99

3.72

12.71

<0.05

5

 

6.36

325

21

8.73

2.43

6.22

<0.05

P. vivax

5

19

2012

13.01

6752

464

201.37

2.92

154.77

<0.05

9

 

10.59

3408

173

101.64

1.80

22.59

<0.05

1

 

0a

283

30

8.44

3.61

16.64

<0.05

1

 

0a

222

24

6.62

3.67

13.63

<0.05

1

 

0a

368

26

10.97

2.39

7.48

<0.05

2

27

2013

19.08

9594

366

154.30

3.60

145.45

<0.05

2

 

5.97

386

31

6.21

5.16

25.46

<0.05

  1. aA single village was selected as an area with a higher risk to Plasmodium infection, and therefore showing a radius of 0 km