结论利用健康危险度评价方法，为制定卫生标准提供可靠的依据是可行的。
Conclusion Health risk assessment may be a reliable method for the preparation of hygiene standard.
模糊熵越小，系统危险等级的不确定性就越小，隶属度向量就越离散，评价方法就越好。
The less entropy is, the less indefinability of risk grade system is, the more dispersed subordinated vector is, the better assessment methods are.
新生儿评价组的标准方法，使用相对危险度(RR)，风险差(RD)和加权均数差(WMD)。
Standard methods of the Neonatal Review Group with use of relative risk (RR), risk difference (rd) and weighted mean difference (WMD).
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