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Table 2 Spatial high and low risk clusters of infection with Plasmodium parasites in general and with P. vivax and P. falciparum in Chamkar Sann, Phi and Tun (2016)

From: Identification and characterization of areas of high and low risk for asymptomatic malaria infections at sub-village level in Ratanakiri, Cambodia

Plasmodium

Hot-/coldspot

X (latitude)

Y (longitude)

Radius (km)

HH

Pop

Obs

Exp

RR

p value

Cluster

CHAMKAR SANN

 MR all spp.

Hotspot

13.594419

106.971901

1.920

23

112

15

5.88

4.66

0.009

1

 

Coldspot

13.597492

106.992280

0.100

24

120

0

6.30

0

0.016

2

 MR Pv

Hotspot

13.594419

106.971901

1.920

23

112

10

3.62

5.70

0.009

1

 

Coldspot

13.597303

106.992159

0.110

30

148

0

4.78

0

0.028

2

 Village all spp.

Hotspot

13.589826

106.983550

0.064

11

67

12

4.18

4.60

0.013

3

 

Coldspot

13.597303

106.992159

0.069

24

120

0

7.48

0

0.001

2

 Village Pf

Coldspot

13.597303

106.992159

0.069

24

120

0

1.20

0

0.077

2

 Village Pv

Hotspot

13.589801

106.983319

0.034

7

40

8

1.60

9.03

0.010

3

 

Coldspot

13.597303

106.992159

0.069

24

120

0

4.79

0

0.013

2

 Field all spp.

Hotspot

13.587529

106.970042

2.120

14

89

12

6.17

3.21

0.037

1

 

Coldspot

13.593618

106.996415

1.070

19

88

0

6.10

0

0.006

4

 Field Pv

Hotspot

13.587529

106.970042

1.800

8

53

10

2.80

7.86

0.004

1

 

Coldspot

13.593618

106.996415

1.070

19

88

0

4.65

0

0.032

4

PHI

 MR all spp.

Hotspot

13.857136

107.441863

1.600

19

91

16

8.06

2.46

0.004

1

 MR Pv

Hotspot

13.868187

107.433554

0.110

7

36

5

1.50

3.99

0.126

2

 

Coldspot

13.873097

107.430424

0.550

20

116

0

4.82

0

0.075

3

 MR Pm

Hotspot

13.857136

107.441863

1.880

27

140

12

5.32

3.93

< 0.001

1

 

Coldspot

13.818306

107.439045

2.920

12

160

1

6.08

0.12

0.043

4

 Village all spp.

Hotspot

13.793786

107.446222

0.043

13

63

9

5.35

1.86

0.025

5

 Village Pv

Hotspot

13.794348

107.446921

0

15

80

10

3.22

5.02

0.053

6

 Village Pm

Hotspot

13.793786

107.446222

0.022

10

48

5

1.66

3.80

0.001

5

 Field all spp.

Hotspot

13.857136

107.441863

1.690

24

121

21

12.47

2.18

0.008

1

 Field Pv

Hotspot

13.868187

107.433554

0.110

6

33

5

1.51

4

0.144

2

 

Coldspot

13.873097

107.430424

0.550

27

120

0

5.48

0

0.022

3

 Field Pm

Hotspot

13.857136

107.441863

1.550

18

85

11

4.06

4.28

< 0.001

1

 

Coldspot

13.820585

107.436073

2.700

26

115

0

5.49

0

0.031

4

TUN

 MR all spp.

Hotspot

13.963290

107.040745

1.340

10

46

11

5.41

2.45

0.096

1

 MR Pf

Hotspot

13.963290

107.040745

0

1

2

2

0.06

45.86

0.022

1

 Village Pf

Hotspot

13.961924

107.053807

0

1

2

2

0.04

58.71

0.012

2

 Village Pv

Hotspot

13.962842

107.053085

0.039

4

27

8

2.62

3.57

0.028

3

 Field all spp.

Hotspot

13.963290

107.040745

1.820

19

82

16

10.82

1.76

0.112

1

 Field Pf

Hotspot

13.963290

107.040745

0.550

5

17

4

0.33

57.41

< 0.001

1

  1. Clusters with a p value < 0.15 are displayed
  2. MR = only participants’ indicated main residences applied, Village = only coordinates of village houses applied; Field = only coordinates of field houses applied; all spp. = Plasmodium infections in general (all species); Pf = P. falciparum; Pv = P. vivax; Pm= P. malariae; X, Y = coordinates of centre of the cluster in longitude–latitude; HH = amount of households within the cluster; Pop = population within the cluster; Obs = amount of observed cases in the cluster; Exp = amount of expected cases in the cluster; RR = relative risk of getting infected in the cluster; Number = number assigned to the cluster, indicating clusters with (nearly) the same center point