目的探讨病例对照家系设计中样本含量的估算方法及影响因素。
Objective Discussing sample size estimation method and effect factors for case control family design.
用计算机方法对B超测量甲状腺容积的适宜样本含量进行了估算。
In this paper, the authors estimated the optimal sample size of thyroid volume measured with Bultrasound by applying the computer simulation technique.
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