Ignoring small predictable profits and losses: a new approach for measuring incentives for cream skimming
Erik van Barneveld (),
Leida Lamers (),
René van Vliet () and
Wynand van de Ven ()
Health Care Management Science, 2000, vol. 3, issue 2, 140 pages
Abstract:
Under inadequate capitation formulae competing health insurers have an incentive for cream skimming, i.e., the selection of enrollees whom the insurer expects to be profitable. When evaluating different capitation formulae, previous studies used various indicators of incentives for cream skimming. These conventional indicators are based on all actual profits and losses or on all predictable profits and losses. For the latter type of indicators, this paper proposes, as a new approach, to ignore the small predictable profits and losses. We assume that this new approach provides a better indication of the size of the cream skimming problem than the conventional one, because an insurer has to take into account its costs of cream skimming and the (statistical) uncertainties about the net benefits of cream skimming. Both approaches are applied in theoretical and empirical analyses. The results show that, if our assumption is right, the problem of cream skimming is overestimated by the conventional ways of measuring incentives for cream skimming, especially in the case of relatively good capitation formulae. Copyright Kluwer Academic Publishers 2000
Date: 2000
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DOI: 10.1023/A:1019029004807
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