Facing the selection of purchasing market, hospital should adjust administration policies.

医院必须面对买方市场的选择，调整医院的管理策略。

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Conclusion The principles and methods for observational studies should be followed to reduce information bias, selection bias and confounding bias in statistical analysis of hospital data.

结论在对医院资料进行统计分析时，应遵循观察性研究的原则和方法，以避免可能存在的信息偏倚、选择偏倚和混杂偏倚。

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Combining network design with the reality of hospital network reconstruction, the paper focuses on hardware selection and network design in hospital network construction.

文章从网络设计的角度，结合医院网络改造的实际，重点阐述了医院计算机网络建设中硬件选型及网络设计的问题。

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