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Table 2 Tumour cell percentage profile (TCP) performance.

From: A gene expression profile for detection of sufficient tumour cells in breast tumour tissue: microarray diagnosis eligibility

  Median TCP profile index P-value Accuracy
Training cohorts (n = 165)
low pathological TCP (<30%) -0.592   85%
medium/high pathological TCP (≥30%) 0.327 P < 0.0001 88%
Kappa score: 0.68 (95% 0.50 – 0.72)    
Validation cohort (n = 238)
low pathological TCP (<30%) -0.589   78%
medium/high pathological TCP (≥30%) 0.305 P < 0.0001 93%
Kappa score: 0.63 (95%CI 0.47–0.73)    
  1. P-value, Student's T-test; TCP Accuracy, accuracy between TCP profile assessment and pathological scoring.