Objective To study of the method of estimation of point and confidence interval of prevalence in the absence of patients number.
目的研究患病人数未知时患病率的点估计及区间估计方法。
Objective To study of the method of estimation of point and confidence interval of prevalence in the absence of patients number.
目的研究患病人数未知时患病率的点估计及区间估计方法。
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