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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 clustersRegionsCounties within clusters Counties outside clusters χ2P
n(%)n(%)
Spatial clustering PTB cases
 Border*1872.0728.09.16< 0.01
 Inland4038.56461.5  
Spatial clustering SSP-TB cases
 Border1768.0832.08.71< 0.01
 Inland3735.66764.4  
Spatial clustering SSN-TB cases
 Border1560.01040.03.820.051
 Inland4038.56461.5  
Spatial-temporal clustering PTB cases
 Border1456.01144.00.010.95
 Inland5956.74543.3  
Spatial-temporal clustering SSP-TB cases
 Border1664.0936.00.300.56
 Inland6057.74442.3  
Spatial-temporal clustering SSN-TB cases
 Border1352.01248.00.500.48
 Inland4644.25855.8  
  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