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. 2019 May 14;68(7):1087–1094. doi: 10.1007/s00262-019-02344-6

Table 3.

2 × 2 Confusion matrix and performance measures

CTC IHC
PD-L1(+) PD-L1(−) Total
PD-L1(+) 15 10 25
PD-L1(−) 4 4 8
Total 19 14 33