4Stafford RS. The impact of nonclinical factors on repeat Cesarean Section [J].JAMA, 1991,265(1) : 59-63.
5Friedman B, Shortell S. The financial performance of selected in-vestor-owned and nor-for-profit system hospitals before and after Medieare Prospeetive Payment[J] .Health serviees research,1988, 23(2) : 237-267.
6Ozcan YA, Luke RD, Hakwever C. Ownership and organizational performance. A comparison of technical efficiency across hospital types [J]. Medical care,1992, 30(9) : 781-794.
7National Center for Health Statistics.Health,United States,2000[M].Hyattsuille,Maryland[S.N.],2000,315.
8National Center for health Statistics.Health,United States,2003[M].Hyattsuille,Maryland[S.N.],2003.299.
9New York Academy of Medicine.The empirical literature comparing for—profit and nonprofit hospitals,managed care organizations,and nursing homes:updating the Institute of Medicine Study[M].Washington DC:[S.N.],1999.1—29.
10RosenauP V.Performance evaluations of for—profit and nonprofit U.S.hospitals since 1980[J].Nonprofit management&leadership,2003,13(4):401—423.