Accuracy of an administrative database for pancreatic cancer by international classification of disease 10th codes: A retrospective large-cohort study

Table 4 Diagnostic accuracy of pancreatic cancer diagnosed by the international classification of diseases, 10^th revision edition in the administrative database

		Status of PC		Total
		Positive	Negative
Definite diagnostic criteria
ICD codes of PC	Outcome positive	True positive	False positive	910
		904	6
	Outcome negative	False negative	True negative	1846
		1	1845
	Total	905	1851	2756
Possible diagnostic criteria
ICD codes of PC	Outcome positive	True positive	False positive	936
		918	18
	Outcome negative	False negative	True negative	1846
		1	1845
	Total	919	1863	2782
Overall diagnostic criteria
ICD codes of PC	Outcome positive	True positive	False positive	1846
		1822	24
	Outcome negative	False negative	True negative	1846
		1	1845
	Total	1823	1869	3692

ICD: International classification of disease. PC: Pancreatic cancer.