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Table 2 Comparison between the results of the CT findings and those of a reference standard in the post-treatment group

From: Diagnostic performance of PET/CT in primary malignant bone tumors

Cases A reference standard results χ2 P-value
CT results  − ve  + ve
No % No %
 − ve True – ve False − ve 16.07  < 0.001*
  13 39.4 2 6.1   
 + ve False + ve True + ve   
  3 9 15 45.5   
  1. χ2, chi-square test; P-value, probability
  2. *Significant P value (< 0.05)