2021年10月18日 · 那么RR（Relative Risk, 相对危险度）是？ 很简单：RR=10%/20%=0.5。 一、RR能说明什么？ 假设另一项拟探讨B药对于急性心肌梗死的治疗效果，试验结果为服用B药的患者40%死亡，对照组80%死亡。 RR=40%/80%=0.5。 (表1) 表1. 两种药物治疗不同心脏病疾病的试验结果. 对于A药和B药，两个试验的RR都是0.5。 我们可以说“A药可以使室性心律失常患者的死亡率下降50%；B药也可以使急性心肌梗死患者的死亡率下降50%”。 上面的描述中，我们实际上 …

Relative risk reduction (RRR) tells you by how much the treatment reduced the risk of bad outcomes relative to the control group who did not have the treatment. In the previous example, the relative risk reduction of fever and rash in the group of the children on the intervention was 40 per cent (1 – 0.6 = 0.4 or 40 per cent).

In epidemiology, the relative risk reduction (RRR) or efficacy is the relative decrease in the risk of an adverse event in the exposed group compared to an unexposed group. It is computed as , where is the incidence in the exposed group, and is the incidence in the unexposed group.

This guide explores key concepts like relative vs absolute risk, risk reduction, and the number needed to treat. These measures quantify the probability of adverse outcomes in different ways. Some of these statistics show how treatments or exposure to various conditions help you avoid negative events.

relative risk reduction is 20% (much below the RRR for drug X in disease A) while the absolute risk reduction is much higher, 10%. So even though the drug is not very effective, you would still prescribe

假设某研究拟探讨A药对于室性心律失常的治疗效果，试验结果为服用A药的患者10%死亡，对照组20%死亡。那么RR（Relative Risk, 相对危险度）是？很简单：RR=10%/20%=0.5。不了解RR是什么？ 一、RR能说明什么？

Relative risk reduction (RRR) is a convenient way of re-expressing a risk ratio as a percentage reduction: RRR = 100% × (1 – RR). For example, a risk ratio of 0.75 translates to a relative risk reduction of 25%, as in the example above.

Relative risk reduction (RRR) determines the degree of risk reduction for the undesired event in the subgroup that presented it (experimental group) relative to the opposite corresponding subgroup (control group). It is calculated by the following formula:

2022年11月22日 · The relative risk reduction is based on the relative risk, a proportional measure or ratio used in epidemiologic studies to estimate the probability of a disease associated with an exposure. The present article demonstrates how the relative risk reduction and relative risk obscure the magnitude of disease risk reduction in clinical research.

2024年7月3日 · Relative Risk Reduction tells you by how much the treatment reduced the risk of bad outcomes relative to the control group who did not have the treatment. In the above example, Acetazolamide decreases the risk of developing acute mountain sickness by 41% as …