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- W2104449012 abstract "Introduction The goal in medical record linkage is to combine data on the same patient stored in different databases. Deterministic record linkage uses a pre-defined rule to classify record pairs as links and non-links whereas probabilistic record linkage uses the observed data patterns to find the optimal classification. Our aim was to compare the performance of both strategies under different conditions by varying the frequency of registration errors and the amount of discriminating power. Methods We performed a simulation study in which we varied key data characteristics to create a range of realistic record linkage scenarios. For each scenario we compared the number of misclassifications (number of false links and false non-links) made by the different linking strategies: deterministic full, deterministic N-1 (all but one have to agree) and probabilistic. Results The full deterministic strategy produced the lowest number of false positive links, but at the expense of missing considerable numbers of matches depending on error rate of the linking variables. The probabilistic strategy outperformed the deterministic strategy (full or N-1) across all scenarios. A deterministic strategy will only produce comparable results in those situations where the deterministic rule closely matched the patterns identified by a probabilistic strategy. However, the information to guide the selection of patterns is not present in a deterministic strategy. Conclusion Probabilistic record linkage is the preferred method for record linkage as deterministic strategies can lead to many linking errors if the predefined rule is not correctly specified. Furthermore, the probabilistic strategy is a more flexible approach that provides additional information about the quality of the linkage process. Deterministic versus probabilistic record linkage" @default.
- W2104449012 created "2016-06-24" @default.
- W2104449012 creator A5080471832 @default.
- W2104449012 date "2009-01-01" @default.
- W2104449012 modified "2023-09-24" @default.
- W2104449012 title "Record linkage to enhance data from perinatal registries" @default.
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- W2104449012 hasPublicationYear "2009" @default.