Deduplication and pension schemes

(Aug 7, 2008)

Deduplication is an essential part of data preparation for statistical modelling. The phenomenon of multiple policies per person is a major issue for annuity portfolios, and arises from life companies' policy-orientated view of the world. This makes perfect sense for insurers, of course, since their legal liability is the policy.

My expectation was that it would be less of an issue for pension schemes, whom I thought would naturally have a more person-orientated view of their liabilities. However, I recently analysed the mortality of a UK pension scheme with over 38,000 benefit records, of which over 1,300 were clear duplicates. I didn't reckon on the frequency with which people can return to a former employer,

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Tags: deduplication, duplicates, pensions

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