V2EX odds ratio

Odds Ratio

释义 Definition

odds ratio(优势比/比值比,简称 OR):统计学与流行病学中用于比较两组事件发生“优势(odds)”大小的指标。常用于病例对照研究、Logistic 回归等。
(注:与 risk ratio/relative risk(风险比)不同;odds 与 risk 的计算方式不一样。)

发音 Pronunciation

/dz reio/

例句 Examples

The odds ratio is 2.0, so the treatment group has higher odds of recovery.
优势比为 2.0,因此治疗组的康复优势更高。

After adjusting for age and smoking, the odds ratio for lung cancer remained significant in the logistic regression model.
在控制年龄和吸烟因素后,Logistic 回归模型中肺癌的优势比仍然显著。

词源 Etymology

odds 原指“差额、不均等”,后来引申为“(概率意义上的)优势/赔率”;ratio 来自拉丁语 ratio,意为“计算、比例”。合起来 odds ratio 就是“两组优势之比”,用于量化某种暴露与结局之间的关联强度。

相关词 Related Words

文学与经典著作 Literary Works

  • Modern Epidemiology(Rothman, Greenland, Lash):系统讨论 OR 在流行病学研究中的解释与局限。
  • Applied Logistic Regression(Hosmer, Lemeshow, Sturdivant):在 Logistic 回归框架下大量使用并解释 odds ratio。
  • Statistical Methods in Medical Research(Armitage, Berry, Matthews):医学统计语境中常用 OR 展示关联与推断。
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