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Fig. 1 | BMC Medical Research Methodology

Fig. 1

From: Investigating increased admissions to neonatal intensive care in England between 1995 and 2006: data linkage study using Hospital Episode Statistics

Fig. 1

Known and calculated values for matching algorithms, used in assessment of linkage error. Data linkage is performed by pairing data from two data sets, followed by manual verification of linked pairs to identify true matches. Values for cells were identified in the following manner: (1) The total number of row pairs, maximum number of matches, total number of linked pairs and number of true matches within those linked pairs were identified. (2) The numbers of false links, false non-links, total non-links and number of non-matches were then derived. (3) Finally, the true number of non-matches among the non-linked pairs was calculated

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BMC Medical Research Methodology

ISSN: 1471-2288

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