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Table 3 Association between geographical regions and pulmonary tuberculosis clusters in Yunnan

From: The characteristics of spatial-temporal distribution and cluster of tuberculosis in Yunnan Province, China, 2005–2018

Characteristic of clusters

Regions

Counties within clusters

Counties outside clusters

χ2

P

n

(%)

n

(%)

Spatial clustering PTB cases

 

Border*

18

72.0

7

28.0

9.16

< 0.01

 

Inland

40

38.5

64

61.5

  

Spatial clustering SSP-TB cases

 

Border

17

68.0

8

32.0

8.71

< 0.01

 

Inland

37

35.6

67

64.4

  

Spatial clustering SSN-TB cases

 

Border

15

60.0

10

40.0

3.82

0.051

 

Inland

40

38.5

64

61.5

  

Spatial-temporal clustering PTB cases

 

Border

14

56.0

11

44.0

0.01

0.95

 

Inland

59

56.7

45

43.3

  

Spatial-temporal clustering SSP-TB cases

 

Border

16

64.0

9

36.0

0.30

0.56

 

Inland

60

57.7

44

42.3

  

Spatial-temporal clustering SSN-TB cases

 

Border

13

52.0

12

48.0

0.50

0.48

 

Inland

46

44.2

58

55.8

  
  1. PTB Pulmonary tuberculosis, SSP-TB Sputum smear-positive tuberculosis, SSN-TB Sputum smear-negative tuberculosis,
  2. † Counties within the most likely or secondary clusters
  3. ‡ Counties outside the most likely or secondary clusters
  4. * Border: 25 border counties in Yunnan