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. 2019 Nov 29;122(3):382–387. doi: 10.1038/s41416-019-0656-6

Table 2.

Classification of 521 BC patients according to prognostic stage Eighth edition AJCC 2018 and prognostic stage modified using Ki67 (Ki67-PS).

AJCC 2018 prognostic stage AJCC 2018 prognostic stage modified by Ki67 (Ki67-PS)
IA IB IIA IIB IIIA Total
IA 411 0 0 0 0 411
IB 58 31 0 0 0 89
IIA 3 0 16 0 0 19
IIB 0 0 0 0 0 0
IIIA 0 0 0 0 2 2
IIIB 0 0 0 0 0 0
IIIC 0 0 0 0 0 0
Total 472 31 16 0 2 521

Bold values indicate the number of patients that were differently classified