很显然，并非所有上述标准都必须满足，在确定副反应与疫苗之间的因果关系时，每一个标准的权重也不同。
Clearly, not all these criteria need to be present, and neither does each carry equal weight for a causal relationship between an adverse event and the vaccine to be determined.
同时，在确定准则层对目标层的权重时使用了变异系数法。
At the same time, we use coefficient of differentiation method in determining the weights of criterion tier to target tier.
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