本文探讨了交叉试验设计资料的两种等效性检验方法，即双单侧t检验和可信区间法。
Two one-side test and confidence interval method can be used to test the equivalence.
方法根据中心极限定理和连续性校正原理，给出一次近似法和校正一次近似法计算总体率可信区间的公式。
Methods Based on central limit theorem and continuity correction principal , the formula of once approximate method and its continuity correction formula were derived.
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