Table 3 Concordance statistics (c-index) of various risk scores for RFS.

From: Expression of p53 is significantly associated with recurrence-free survival and overall survival in pleuropulmonary blastoma (PPB): a report from the International Pleuropulmonary Blastoma/DICER1 Registry

Risk factor

C-index (SE)

Difference (SE)

P

PPB type

0.702 (± 0.035)

  

p53 group

0.685 (± 0.039)

−0.017 (± 0.038)

0.647

 Stratified by type

0.581 (± 0.045)

 Type I

0.611 (± 0.112)

 Type II

0.503 (± 0.068)

 Type III

0.651 (± 0.056)

p53 percent

0.704 (± 0.038)

0.002 (± 0.037)

0.964

 Stratified by type

0.594 (± 0.046)

 Type I

0.627 (± 0.143)

 Type II

0.528 (± 0.066)

 Type III

0.653 (± 0.063)

  1. RFS recurrence-free survival, SE standard error, PPB pleuropulmonary blastoma.