BMC Medical Informatics and Decision Making

Table 2 Examples of reported precisions and recalls from review of the literature

From: Combination of conditional random field with a rule based method in the extraction of PICO elements

	Population		Intervention
Ref.	Precision %	Recall %	Precision %	Recall %
[9]	56–77	37–40	77–87	71–80
[13]	NA	NA	76–89	58–65
[17]	70	24	74-78	56-58
[10]	97	74	NA	NA
[7]	66-94	61-84	50-79	26–65

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ISSN: 1472-6947

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