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While several plots of the aggregate age distribution suggest that firm age is exponentially distributed, we find some departures from the exponential benchmark. At the lower tail, we find that very young establishments are more numerous than expected, but they face high exit hazards. At the...
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There have been many studies of the volume-outcome relationship. In all of these, the unit of analysis is the hospital or physician. However, this level of analysis is mostly limited to the use of in-hospital mortality rates and is particularly sensitive to selective referral. Moreover, the...
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reciprocal of the survival-specific force of mortality at ages after x, weighted by life-table deaths at each age after x, as … reciprocal of the survival-specific force of mortality over surviving proportions less than s, weighted by life-table deaths at … population and eight subpopulations shows that usually the younger the age at which survival falls to half (the median life …
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