价值 - - 以及它的历史基础 - - 的利弊
Victor Grech1, Adelazeem A Eldawlatly2
1Department of Paediatric, Mater Dei Hospital, Malta.
Saudi journal of anaesthesia
|August 21, 2023
概括
在统计测试中,P值至关重要,但往往被误解. 本综述阐明了它们的含义,历史背景,以及考虑信任区间与P值一起进行准确解释的重要性.
科学领域:
- 生物统计学 生物统计学
- 统计推理 统计推理
背景情况:
- 在推理测试中对P值的解释在研究人员和编辑之间往往是模两可的.
- 从历史上看,P ≤ 0.05成为统计学意义的常规值,受到费舍尔的工作的影响.
- 过度依赖P ≤0.05值可能会导致潜在有价值的研究因样本小或随机错误等因素而被驳回.
研究的目的:
- 审查P ≤0.05显著性水平背后的历史发展和理由.
- 为了澄清P值的含义,包括1型和2型错误,alpha (α) 和beta (β).
- 强调纳入置信区间 (CI) 的重要性,并考虑研究设计,以便对统计结果进行细微解释.
主要方法:
- 对P ≤0.05值的起源和接受的历史审查.
- 解释零假设 (H0) 和它在统计测试中的作用.
- 讨论P值的概率性质和置信区间的实用性.
主要成果:
- P值是一个概率谱,而不是一个重要的二进制指标.
- 诸如样本大小,效果大小,偏差和随机错误等因素可以影响P值.
- 置信区间为效应提供了一系列可信的值,补充P值解释.
结论:
- P值是必不可少的,但不应该是评估研究结果的唯一指标.
- 审慎考虑信心区间和研究设计对于准确的解释至关重要.
- 统计学意义应被视为一个连续的频谱,而不是二分化的结果.
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