Hazard Ratio （HR，风险比）是流行病学和临床研究中一个常用的统计量，用于比较两组患者发生事件（如死亡、复发等）的风险。 HR 用于评估治疗组与对照组之间的风险差异，通常通过 生存分析 方法（如 Cox回归模型）计算得出。 HR 的解读. - HR = 1：表明两组之间的风险相等。 - HR > 1：表明治疗组的风险高于对照组。 例如，HR = 1.5 表示治疗组发生事件的风险是对照组的 1.5 倍。 - HR < 1：表明治疗组的风险低于对照组。 例如，HR = 0.7 表示治疗组发生事件的风险 …

先说最简单的 Ratio， Ratio 就是比值的意思。 4:3 就是一个Ratio。 就是两个数字之间的比值， A/B,用来反应两个数字之间的关系。

2023年10月21日 · Simplify ratios or create an equivalent ratio when one side of the ratio is empty. Solve ratios for the one missing value when comparing ratios or proportions. Compare ratios and evaluate as true or false to answer whether ratios or fractions are equivalent.

Our innovative ratio calculator, which is also launched online, can settle all your equivalent fractions, proportions and ratio

In mathematics, a ratio (/ ˈreɪʃ (i) oʊ /) shows how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six (that is, 8:6, which is equivalent to the ratio 4:3).

2024年7月29日 · In mathematics, a ratio is a comparison of two or more numbers and it indicates the numbers' sizes in relation to each other. A ratio compares two quantities by division, with the dividend or number being divided termed the antecedent and the divisor or number that is dividing termed the consequent.

2024年6月8日 · A ratio is a simple comparison between two quantities. It says how much one thing is there compared to another. For example, in a group of 7 students, 4 are men and 3 are women.

The ratio of men to women at the conference was ten to one/10:1. 出席会议者的男女比例为10：1。 The school is trying to improve its pupil-teacher ratio (= the number of teachers …

2022年11月29日 · By definition, 1: 1 ratio is actually one of the portions or quantities of the whole substance when units are the same. 1 bottle has 6 liters of pineapple juice while the other has 4 liters of juice.

Simple Ratio Calculators: Enter two numbers to get the ratio. Advanced Ratio Calculators: Allow for multiple inputs and different types of ratios. Ratio Scaling Calculator