TABLE 2.

Predictive ability of defined IC50 cutoff value in PDTO drug test for adjuvant chemotherapy response prediction.

N = 86		Response in the clinic
		Response N = 59	Nonresponse N = 27
Drug response in PDTO	Sensitive, N = 54	50	4	PPV = 92.59% (50/54)
	Resistant, N = 32	9	23	NPV = 71.88% (23/32)
		Sens = 84.75% (50/59)	Spec = 85.19% (23/27)	Accuracy = 84.88% (73/86)

Abbreviations: NPV, negative predictive value; PDTO, patient‐derived tumor organoid; PPV, positive predictive value; Sens, sensitivity; Spec, specificity.