Table 2

Overall concordance in tumor grade assessment between pathologistsa

Pathologist 2Total
Well differentiatedModerately differentiatedPoorly differentiated
Pathologist 1
Well differentiated3104
Moderately differentiated021526
Poorly differentiated065561
Total3286091
  • a Observed concordance = (3 + 21 + 55)/91 = 87%. κ coefficient = 0.72 (95% CI, 0.57–0.87).