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本刊常用统计学方法
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- Journal Title:
- Perioperative Safety and Quality Assurance
- Issue:
- 4
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Abstract： 常用统计学方法:分类(名义分类或等级分类)资料用x2检验、Ridit分析,区间变量均数组间比较用t检验、F检验、秩和检验(适用于呈偏态分布的区间变量).x2检验的适应范围:当总样本含量(n)＞40,理论频数(T)＞5时,用x2检验的基本公式;若n＞40,1＜T＜5时,用校正x2检验;若n＜40或T＜1时,用x2检验的确切概率法.
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