Table 1.

Analysis of the diagnostic validity of the Mode 1 histogram measure in the differentiation of pancreatic masses

	Malignant pancreatic tumor
	Yes	No
Mode 1
Indicative < 86	True positive	False positive	Positive predictive value
	58/58	50/91	54% (50%-54%)
Non indicative ≥ 86	False negative	True negative	Negative predictive value
	0/58	41/91	100% (90%-100%)
	Sensitivity	Specificity
	100% (93%-100%)	45% (41%-45%)