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Table 3 Spatial malaria pockets with higher PCR prevalence of Plasmodium falciparum and Plasmodium vivax species 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

2

19

Nov 2012

23.92

953

46

21.36

2.96

14.75

<0.05

1

0a

53

7

1.19

6.22

7.10

<0.05

0

 

Nov 2013

      

>0.05

P. vivax

3

1

Nov 2012

0a

52

12

1.55

8.33

15.66

<0.05

5

4.91

259

22

7.72

3.17

9.93

<0.05

2

2.90

103

13

3.07

12.6

9.69

<0.05

2

1

Nov 2013

0a

61

10

1.38

7.79

12.15

<0.05

7

12.69

538

29

12.18

2.81

9.98

<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