Do "any willing provider" and "freedom of choice" laws affect HMO market share?

@article{Morrisey2003DoW,
  title={Do "any willing provider" and "freedom of choice" laws affect HMO market share?},
  author={Michael Morrisey and Robert L. Ohsfeldt},
  journal={Inquiry : a journal of medical care organization, provision and financing},
  year={2003},
  volume={40 4},
  pages={362-74}
}
This study examines the effects of "any willing provider" (AWP) and "freedom of choice" (FOC) laws on the market share of health maintenance organizations (HMOs) in metropolitan statistical areas over the period 1989-95. We use pooled cross-section time-series regression techniques with year and state fixed effects. HMO market share is hypothesized to be a function of state laws, market characteristics, and state preference for managed care regulation. AWP and FOC laws are characterized by… CONTINUE READING

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