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Table 2 Significant malaria clusters detected using the purely spatial clustering

From: Spatial and spatio-temporal analysis of malaria cases in Zimbabwe

Year

Cluster type

Cluster areas (n)

Observed

Expected

RR

Radius(km)

LLR

P-value

 

A

3

48 569

9569

6.38

74

44 198

0.00

 

B

6

58 222

22 305

3.27

126

23 850

0.00

2011

B

2

13 937

4520

3.24

55

6 506

0.00

 

B

7

47 530

36 405

1.40

152

1 937

0.00

 

B

2

5414

5015

1.08

32

16

0.00

 

A

3

92 324

17 148

6.94

74

89 397

0.00

 

B

2

74 241

22 710

3.88

60

40 668

0.00

2012

B

5

44 030

25 085

1.86

73

6 386

0.00

 

B

3

42 155

28 805

1.53

113

2 982

0.00

 

B

5

34 236

31 941

1.08

122

89

0.00

 

A

12

247 572

108 723

3.78

152

97 033

0.00

2013

B

2

41 339

10 382

4.28

74

27 258

0.00

 

B

3

52 771

37 524

1.46

113

3 026

0.00

 

A

3

52 868

12 087

5.28

74

40 965

0.00

 

B

4

36 004

14 553

2.72

69

12 175

0.00

2014

B

2

16 088

5243

3.21

55

7 438

0.00

 

B

3

17 509

14 423

1.23

69

329

0.00

 

A

1

28 145

5788

5.47

114

23 439

0.00

2015

B

2

13 261

5885

2.34

74

3 533

0.00

 

A

12

211 251

88 565

3.88

152

88 392

0.00

 

B

2

79 698

23 800

3.92

60

44 713

0.00

2016

B

3

77 507

30 514

2.90

113

28 321

0.00

 

B

2

31 355

12 709

2.59

74

10 118

0.00

  1. A primary cluster, B secondary, RR relative risk; LLR log likelihood ratio