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Table 3 The chi square test results of three periods in three groups

From: Multidrug-resistant tuberculosis (MDR-TB) disease burden in China: a systematic review and spatio-temporal analysis

Date All cases New cases The previously treated cases
χ 2 P value χ 2 P value χ 2 P value
2003–2005 compared with 2006–2009 110.242 0.000 83.841 0.000 19.252 0.000
2006–2009 compared with 2010–2012 221.338 0.000 237.354 0.000 121.712 0.000
2003–2005 compared with 2010–2012 1.586 0.208 19.121 0.000 24.652 0.000