2.

三种IHC评分方法检测19外显子缺失突变的相关数据比较

Comparison of three different criteria in detecting EGFR E19del by IHC

Criteria	Sensitivity	Specificity	PPV	NPV	Cohen’s Kappa 95%CI
A	50.0%	94.5%	82.4%	78.8%	0.493 (0.282, 0.661)
B1	57.1%	90.9%	76.2%	80.6%	0.512 (0.321, 0.692)
B2	35.7%	96.4%	83.3%	74.6%	0.373 (0.114, 0.580)