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|This paper explores whether big data, taking the form of extensive high dimensional records, can reduce the cost of adverse selection by private insurers in government-run capitation schemes, such as Medicare Advantage. We argue that using data to improve the ex ante precision of capitation regressions is unlikely to be helpful. Even if types become essentially observable, the high dimensionality of covariates makes it infeasible to precisely estimate the cost of serving a given type: big data makes types observable, but not necessarily interpretable. This gives an informed private operator scope to select types that are relatively cheap to serve. Instead, we argue that data can be used to align incentives by forming unbiased and non-manipulable ex post estimates of a private operator’s gains from selection.
|Braverman, Mark, and Sylvain Chassang. "Data-driven incentive alignment in capitation schemes." Journal of Public Economics 207 (2022): 104584. doi:10.1016/j.jpubeco.2021.104584
|Type of Material:
|Journal of Public Economics
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