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An operational approach to computerized record linkage has been developed based on the concept of probability of chance match in two groups of records brought together for comparison. Tolerance levels can be readily derived from these records for decision-making in accepting or rejecting a linked pair. This approach is especially suitable for iteration when linked pairs are removed in successive cycles. An application of linkage for death clearance of the 1942 resident population of 437,967 registered in Hawaii during a 38-year period from 1942 to 1979 is presented. The reliability of linkage and rate of failure were analyzed.
Mi et al. (Fri,) studied this question.