Pharmacodynamics is the scientific study of a drug's biochemical or physiological influence on the body. It categorizes responses into continuous, discrete (or categorical), and time-to-event outcomes. Continuous responses yield numerical values within a certain range, such as blood pressure readings and blood glucose levels, gauging the efficacy of antihypertensive and antidiabetic drugs. Discrete responses can be binary, indicating whether a drug has an effect or not, or ordinal, exemplifying graded effects over time, like the impact of an anti-seizure drug on the frequency of seizures, within a month. Time-to-event outcomes measure the duration until a specified event occurs, for instance, the period needed to reduce an anti-seizure drug dose or the time before a seizure relapse. These classifications provide a robust framework for assessing drug effects.
Pharmacodynamics describes a drug’s biochemical or physiological effect on the body.
Pharmacodynamic responses are typically categorized as continuous, discrete, or time-to-event outcomes.
Continuous responses provide a numerical value within a defined range. For example, the effect of an antihypertensive drug is measured by monitoring blood pressure readings.
Discrete or categorical responses are either binary or ordinal.
Binary responses show whether a drug shows an effect or no effect.
Ordinal responses reflect graded changes over time, such as the effect of an anti-seizure drug on the number of seizures in a month.
Time-to-event outcomes are continuous time measures with censoring, until a specific event happens—for instance, the time for anti-seizure drug dose reduction until seizure relapse.
繁體中文
