潜在偏差模型与贝叶斯收缩先值,用于动态借用多个历史控制数据的潜在偏差模型
Tomohiro Ohigashi1, Kazushi Maruo2, Takashi Sozu3
1Department of Biostatistics, Tsukuba Clinical Research & Development Organization, University of Tsukuba, Tsukuba, Ibaraki, Japan.
Pharmaceutical statistics
|November 17, 2024
概括
本研究介绍了使用历史对照的临床试验的潜在偏差模型. 在处理异构的历史对照时,spike-and-slab前期显示出优异的性能.
科学领域:
- 生物统计学 生物统计学
- 临床试验设计 临床试验设计
- 统计建模 统计建模
背景情况:
- 在临床试验中整合历史对照数据存在挑战,原因是对照之间的潜在冲突和关系.
- "潜在偏差"假设将当前和历史控制参数之间的差异定义为"潜在偏差参数".
研究的目的:
- 通过结合各种收缩先验来扩展"潜在偏差模型",用于分析历史控制数据.
- 为了比较拟议的方法 (尖和板,迪里克莱-拉普拉斯,尖和板拉索) 与现有的方法 (如马) 的性能.
主要方法:
- 开发一个包含现有方法的"潜在偏差模型"类.
- 在潜在偏差模型中应用尖和板,迪里克莱-拉普拉斯和尖和板拉索先验.
- 模拟研究和对临床试验示例的分析,以评估方法性能.
主要成果:
- 马前期和提议的前期有效地利用历史控制,当它们是均的.
- 这些先验减轻了异构的历史控制的影响,当只有少数存在时.
- 在具有异质历史控制的场景中,尖端和平板前期表现最好.
结论:
- 拟议的收缩先验提供了强大的方法,用于将历史对照纳入临床试验分析.
- 尖峰和平板前期对于管理历史控制数据中的异质性特别有效.
- 潜在偏差模型为利用历史控制信息提供了一个灵活的框架.
相关概念视频
Bias
3.7K
Bias refers to any tendency that prevents a question from being considered unprejudiced. In research, bias occurs when one outcome or answer is selected or encouraged over others in sampling or testing. Bias can occur during any research phase, including study design, data collection, analysis, and publication.
In statistics, a sampling bias is created when a sample is collected from a population, and some members of the population are not as likely to be chosen as others (remember, each member...
In statistics, a sampling bias is created when a sample is collected from a population, and some members of the population are not as likely to be chosen as others (remember, each member...
3.7K
Bias in Epidemiological Studies
158
Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:
158
Hindsight Biases
3.4K
Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?
3.4K
Mechanistic Models: Compartment Models in Individual and Population Analysis
29
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
29
Statistical Inference Techniques in Hypothesis Testing: Parametric Versus Nonparametric Data
114
Statistical inference techniques, paramount in hypothesis testing, differentiate into two broad categories: parametric and nonparametric statistics.
Parametric statistics, as the name suggests, assumes that data follow a specific distribution, often a normal distribution. This assumption enables robust hypothesis testing and estimation. Parametric methods, like the Student's t-test or Goodness-of-fit test, are frequently employed in biostatistics due to their robustness. For instance,...
Parametric statistics, as the name suggests, assumes that data follow a specific distribution, often a normal distribution. This assumption enables robust hypothesis testing and estimation. Parametric methods, like the Student's t-test or Goodness-of-fit test, are frequently employed in biostatistics due to their robustness. For instance,...
114
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models
60
Pharmacokinetic models are mathematical constructs that represent and predict the time course of drug concentrations in the body, providing meaningful pharmacokinetic parameters. These models are categorized into compartment, physiological, and distributed parameter models.
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
60


